bluuebunny/crossref_metadata_2025 huggingface dataset:
ChemInform Abstract: Neighboring Group Participation in the Bromination of Methyl Gibberellate: X‐Ray Molecular Structure of Methyl 3,13‐Di‐O‐acetylgibberellate 16β,17‐Dibromide and ent‐3α,13‐Diacetoxy‐17‐bromo‐10β,16β‐dihydroxy‐20‐norgibberell‐# 1‐ene‐7,19‐dioic Acid 19,10‐Lactone 7‐Methyl Ester.
Authors: COLLADO I. G. , FRAGA B. M. , HANSON J. R. , HITCHCOCK P. B. , TELLADO F. G.
Published: May 2016

Bromination of methyl gibberellate (Ia) with TMPAP under anhydrous conditions leads to the isomerization of ring A to give the Δ1‐19,2‐lactone (II).
ChemInform Abstract: New Tetragonal Tungsten‐Bronze‐Related Phases in the Pseudobinary System KNb3O8‐Nb3O7F Studied by High Resolution Electron Microscopy and X‐Ray Powder Diffraction.
Authors: LUNDBERG M. , SUNDBERG M.
Published: May 2016

For samples of composition K1‐xNb3O8‐xFx (0 ≤ x < 1), the results of HREM and XRD indicate a variety of tetragonal tungsten bronze (TTB) related phases for x = 0, 0.25, 0.50, 0.75, and 0.875.
ChemInform Abstract: Structure of the Triperoxofluorovanadates(V) A2(V(O2)3F) (A: NH+ 4, K+, Cs+).
Authors: WESTERMANN K. , LEIMKUEHLER M. + , MATTES R.
Published: May 2016

(NH4)2(V(O2)3F)·H2O crystallizes in the tetragonal cryolite‐type structure at 20 °C. The anions are rotationally disordered.
ChemInform Abstract: Crystal Structure of GeF4.
Authors: KOEHLER J. + , SIMON A. , HOPPE R.
Published: May 2016

The title compound, prepared by heating BaGeF6 (600 °C, 10‐3 torr, Au crucible in quartz tube), is solidified by cooling with liquid N2.
ChemInform Abstract: Synthesis and Crystal Structure of the Bis(triethylammonium)octasulfide, (HN(C2H5)3)2S8.
Authors: SCHLIEPHAKE A. , FALIUS H. , BUCHKREMER‐HERMANNS H. , BOETTCHER P. +
Published: May 2016

The title compound is prepared by reaction of triethylamine, sulfur, and H2S in formamide.
ChemInform Abstract: B6H14, a Dimeric B3H7?
Authors: BRELLOCHS B. , BINDER H.
Published: May 2016

The 11B and 1H NMR spectra of the product of the oxidation of NEt4(B3H8) by I2 in CH2Cl2 at ‐40 to ‐50 °C are discussed.
ChemInform Abstract: Kinetics and Mechanism of Oxidation of Nitrous Acid by Chlorite Ion
Authors: LENGYEL I. , GASPAR V. , BECK M. T.
Published: May 2016

have been investigated with emphasis on the pH range 2.4‐4.5 by potentiometric measurements using bright Pt and Au electrodes.
ChemInform Abstract: Surface Structure and Reactivity of Vanadium Oxide Supported on Titanium Dioxide. V2O5/TiO2 (Rutile) Catalysts Prepared by Hydrolysis.
Authors: CAVANI F. , CENTI G. , FORESTI E. , TRIFIRO F. , BUSCA G.
Published: May 2016

V‐Ti‐O catalysts of different V2O5 content are prepared by hydrolysis of V(IV)‐Ti(IV) solutions and low‐temp.
ChemInform Abstract: Complex Formation vs. Disproportionation: Lanthanoid(II) Chlorides, LnCl2 (Ln: Nd, Sm, Eu, Dy, Tm, Yb), Under the Influence of Alkali Metal Chlorides.
Authors: SCHLEID T. , MEYER G. , MORSS L. R.
Published: May 2016

The action of Li or Na on lanthanoid(III) chlorides principally yields ACl + LnCl2 or LiCl + LiLn2Cl5.
ChemInform Abstract: Synthesis and Structure of the New Compounds Ln3MO5XCl3 (Ln: La, Ce, Pr, Nd, Th; M: Ta, Nb; X: O, OH, F).
Authors: SCHAFFRATH U. , GRUEHN R.
Published: May 2016

The title compounds (IVa), (VI), (VIII), (XII), (XVI) are prepared as shown in the scheme (no yields given) and their powder XRD data are given.
ChemInform Abstract: New Non‐Stoichiometric Ferroelectric Oxyfluoride Phases Derived from LiNbO3 or LiTaO3.
Authors: GUELIN J. , RAVEZ J. , HAGENMULLER P.
Published: May 2016

Six new oxyfluorides are identified in the LiNbO3‐LiF‐NbO2F and LiTaO3‐LiF‐TaO2F systems, with compositions corresponding to the formulae (I), (II), and (III).
ChemInform Abstract: Concerning the Configurational Stability at Nitrogen in N‐Sulfonyloxaziridines (III).
Authors: JENNINGS W. B. , WATSON S. P. , TOLLEY M. S.
Published: May 2016

In contrast to former considerations compounds (III) (thermally stable up to ca. 80 °C) show configurational instability at nitrogen.
ChemInform Abstract: Ionophoric Binding of Alkaline‐Earth‐Metal Cations (A2+) by Tris(arylazo oximato)iron(II) Anions (RL‐): The Trinuclear A(RL)2 Family.
Authors: PAL S. , CHAKRAVORTY A.
Published: May 2016

The coordinated Fe(II) anions (I) act as facial O3 ligands to form 6‐fold coordinated title complexes with the cations of Ba, Sr, Ca, and Mg.
ChemInform Abstract: Diazotransfer Reactions with p‐Acetamidosulfonyl Azide.
Authors: BAUM J. S. , SHOOK D. A.
Published: May 2016

The title reagent (III), prepared from the sulfochloride (I) and sodium azide (II), is employed in the conversion of the dicarbonyl compounds (IV), (VIIa) and (VIII) to the diazo derivatives (V), (VIIb), or (IX).
ChemInform Abstract: Enantioselective Saponification of Diacetates of 2‐Nitro‐1,3‐propanediols by Pig‐Liver Esterase and Preparation of Enantiomerically Pure Derivatives of 2‐Nitro‐allylic Alcohols (Chiral Multiple‐Coupling Reagents).
Authors: EBERLE M. , EGLI M. , SEEBACH D.
Published: May 2016

The reproducible enantioselective saponification of open‐chain and cyclic meso‐diol diacetates (I) (the synthesis of which is described) with pig‐liver esterase gives the monoacetates (II) with > 95% enantiomeric excess.
ChemInform Abstract: Stereochemistry of the Hydrocyanation of 1,5‐Dimethylbicyclo(3.3.0)octanones and ‐octenones.
Authors: QUAST H. , CHRIST J. , KLAUBERT C. A. , PETERS E.‐M. , PETERS K. , VON SCHNERING H. G.
Published: May 2016

Hydrocyanation of the bicyclooctenones (I) and (II) preferentially affords the exo‐cyanoketones (V) and (IX), each of which undergoes addition of trimethylsilyl cyanide (VIII) to give mixtures of the exo‐adducts (VI) or (X) and the endo‐adducts (VII) or (XI); the product ratios being dependent on the catalyst used.
ChemInform Abstract: A Simplified Wittig Synthesis Using a Solid‐Liquid Transfer Process. Part 7. Direct Transformation of Aromatic and Heteroaromatic Aldehydes into Functionalized Allylic Ethers.
Authors: CHEIK‐ROHOU F. , LE BIGOT Y. , EL GHARBI R. , DELMAS M. , GASET A.
Published: May 2016

2‐Hydroxyethyltriphenylphosphonium chloride (I) is dehydrated and then treated with the alcohols (III) to form the alkyl(aryl)oxyethylphosphonium salts (IV) which undergo Wittig olefination with the (het)aryl aldehydes (V), yielding the allylic ethers (VI).
ChemInform Abstract: Reformatsky Reaction of Methyl 2‐Bromo‐3,3,3‐trifluoropropanoate. A Synthetic Method for α‐Trifluoromethyl‐β‐hydroxy Esters.
Authors: YOKOZAWA T. , ISHIKAWA N. , NAKAI T.
Published: May 2016

The reformatsky compound (III), derived from the bromide (I), reacts with the aldehydes (IV) or (VI) to form the alcohols (V) or (VII).
ChemInform Abstract: Synthesis and Characterization of Complexes of (4‐Methoxybenzaldehyde)‐4‐phenyl‐3‐thiosemicarbazone.
Authors: KINTHADA P. M. M. S. , PRABHAKAR L. D. , REDDY D. V.
Published: May 2016

Complexes with transition‐metal ions, e.g. Au(III), Os(VIII), Ru(III), Rh(III), Pd(II), Cu(II) and Ag(I), are obtained from the reaction of the title ligand with the corresponding metal salt in refluxing MeOH (50‐75%).
ChemInform Abstract: New Efficient Synthesis of Methyl trans‐2‐Aryl(or Hetaryl)‐1‐benzamidocyclopropanecarboxylates.
Authors: BLASCO J. , CATIVIELA C. , DIAZ DE VILLEGAS M. D.
Published: May 2016

The 2‐benzamidopropenoates (I) undergo cycloaddition reaction with diazomethane (II), forming the pyrazolines (III).
ChemInform Abstract: Preparation of (Triphenylsilyl)allyl Anion and (Triphenylgermyl)allyl Anion from 1‐Propenyltriphenylsilane and 1‐Propenyltriphenylgermane and Their Reactions with Electrophiles.
Authors: WAKAMATSU K. , OSHIMA K. , UTIMOTO K.
Published: May 2016

The 1‐propenylsilanes or ‐germanes (I) are deprotonated to form the corresponding allylic anions which are quenched with the electrophiles (II) or the aldehydes (V), yielding the products (III) and (IV) or (VI).
ChemInform Abstract: Regiospecific Formations of Thieno(3,2‐a)indolizine and Thieno(2,3‐b)indolizine Derivatives.
Authors: KAKEHI A. , ITO S. , MATSUMOTO S. , MORIMOTO Y.
Published: May 2016

The pyridinium ylides (I) are coupled with the bromides (II) to give the pyridinium bromides (III) which are consecutively cyclized with DBU and oxidized with DDQ, producing the indolizines (IV).
ChemInform Abstract: Bruceantin Support Studies. Part 11. Use of 1‐Penten‐3‐one‐4‐phosphonate as a Kinetic Ethyl Vinyl Ketone Equivalent in the Robinson Annulation Reaction.
Authors: KUO F. , FUCHS P. L.
Published: May 2016

The ethylphosphonate (I) is lithiated and then coupled with acryloyl chloride (II), yielding the phosphonate (III) mentioned in the title.
ChemInform Abstract: Facile Synthesis of Substituted 2‐Iminohydantoins.
Authors: KWON C.‐H. , NAGASAWA H. T.
Published: May 2016

The N‐protected leucines (I) are activated and then treated with cyanamide (II) to yield the leucylcyanamides (III) which cyclize on the attempt of purification, forming the iminohydantoins (IV).
ChemInform Abstract: 5‐Oxazolones. Part 2. 2,4‐Diaryl‐4‐(2,4‐dinitroaryl)‐5(4H)‐oxazolones: Synthesis and Acid‐Catalyzed Transformation into 1‐Hydroxy‐1H‐indazole Derivatives.
Authors: D'ANELLO M. , ERBA E. , GELMI M. L. , POCAR D.
Published: May 2016

As shown for (IIIa) and (IIIb), the title compounds (III) are prepared by arylation of the oxazolones (I) under phase‐transfer conditions.
ChemInform Abstract: A Novel High Yield γ‐Chromone Synthesis.
Authors: SHAW G.
Published: May 2016

The malonylurethane (I) is converted into the morpholine enamine (V) which undergoes cyclocondensation with the salicylaldehydes (VI) and 1‐hydroxy‐2‐naphthaldehyde (VIII) to produce the chromones (VII) and (IX).
ChemInform Abstract: An Efficient Synthesis of a New, Chiral 2′,6′‐Pipecoloxylidide Local Anaesthetic Agent.
Authors: FEDERSEL H.‐J. , JAKSCH P. , SANDBERG R.
Published: May 2016

Starting from the (±)‐pipecoloxylidide (I), the preparation of ropivacaine·HCl·H2O (V) is effected in three steps.
ChemInform Abstract: Azetes from Fluorinated 1,2,3‐Triazines.
Authors: CHAMBERS R. D. , TAMURA M. , SHEPHERD T. , LUDMAN C. J.
Published: May 2016

Photolysis of the perfluoro‐1,2,3‐triazines (I) at a low temperature leads to the formation of the azetes (II) which are not isolated.
ChemInform Abstract: A New Versatile Synthesis of Isoquinolines by Condensation of Iminophosphoranes with o‐Phthalaldehyde.
Authors: AUBERT T. , FARNIER M. , HANQUET B. , GUILARD R.
Published: May 2016

The azidomethyl ketones (I) react with triphenylphosphine (II) to form the iminophosphoranes (III) which undergo in situ cyclocondensation with o‐phthalaldehyde (IV), producing the 3‐acylisoquinolines (V).
ChemInform Abstract: Polycarbonyl Heterocyclics. Part 5. Synthesis of Pyrrolo(3,4‐c)pyridine and Furo(3,4‐c)pyridine Derivatives by the Ring Transformation of Thiazolidin‐4‐one Derivatives.
Authors: ZALESKA B.
Published: May 2016

The reaction between (I) and morpholine (II) affords the complexes (III) (no yield given for (IIIb) and (IIIe)).
ChemInform Abstract: Reaction of Dialkyl Phosphites with 1,1‐Dicyano‐3,3,3‐trichloropropylene.
Authors: KHASKIN B. A. , RYMAREVA T. G. , GOLOSOV S. N.
Published: May 2016

Treatment of the dicyanotrichloropropene (I) with an excess of the dialkyl phosphites (II) gives the phosphonates (III).
ChemInform Abstract: Reaction of 2‐Acetyl‐5‐methyl‐1,2,3‐diazaphosphole with 9‐Diazofluorene.
Authors: ARBUZOV B. A. , DIANOVA E. N. , GALIASKAROVA R. T. , CHERNOV P. P. , LITVINOV I. A. , NAUMOV V. A.
Published: May 2016

Reaction of 9‐diazofluorene (I) with the diazaphosphole (II) leads under 1,3‐dipolar cycloaddition to the formation of the diazaphospholodiazaphosphole (III) and a small amount of the bicyclic phosphirane (IV).
ChemInform Abstract: A Designed, Enantiomerically Pure, Fused Cyclopentadienyl Ligand with C2 Symmetry: Synthesis and Use in Enantioselective Titanocene‐Catalyzed Hydrogenations of Alkenes.
Authors: HALTERMAN R. L. , VOLLHARDT K. P. C. , WELKER M. E. , BLAESER D. + , BOESE R.
Published: May 2016

The enantiomerically pure, chiral cyclopentadienyl ligand (VII) is prepared from the trans‐cyclohexenol (I) via optical resolution with (+)‐camphorsulfonyl chloride (III).
ChemInform Abstract: Monomeric versus Dimeric Vanadium(III) Aryloxide Formation. Syntheses and Crystal Structures of ((O‐2,6‐ArMe2)2(μ‐O‐2,6‐ArMe2)V(III))2·THF and ((O‐2,6‐ArMe2)3V(III)(py)2)2 (O‐2,6‐ArMe2: 2,6‐Dimethylphenoxide).
Authors: GAMBAROTTA S. , VAN BOLHUIS F. , CHIANG M. Y.
Published: May 2016

Reaction of the V(II) complex (I) with an excess 2,6‐dimethylphenol (II) gives the title dimer (III).
ChemInform Abstract: Pulse Radiolysis: A New Way to Study Molecular Oxygen Activation. Application to a Vanadium Complex, VCl3(4‐pic)3.
Authors: LE MOTAIS B. , KOULKES‐PUJO A. M. , HUBERT‐PFALZGRAF L. G.
Published: May 2016

The title compound is shown to coordinate oxygen to give a labile dimeric V‐oxygen adduct, a mixed‐valence species.
ChemInform Abstract: Reactions of Tantalocene Trihydride (η5‐C5H5)2TaH3 with the Second Group Metal Halides. Crystal and Molecular Structure of (η5‐C5H5)2TaH(μ2‐H)2ZnCl2·C4H8O.
Authors: ARKHIREEVA T. M. , BULYCHEV B. M. , SOKOLOVA T. A. , SOLOVEICHIK G. L. , BEL'SKII V. K. , BOIKO G. N.
Published: May 2016

The title reactions in all cases lead to the complexes (I)‐(IV) with a 1:1 ratio of Ta to the other metal.
ChemInform Abstract: Synthesis, 95Mo NMR Spectra and X‐Ray Crystal Structure of MoO2(C14H11N2O)2(C2H5OH)1 and Mo2O5(C14H11N2O)2(C2H5OH)1(H2O)1.
Authors: PIGGOTT B. , WONG S. F. , CAPPARELLI M. V.
Published: May 2016

Crystal structures are determined for the two title complexes (I) and (II), formed from 2‐α‐hydroxybenzylbenzimidazole as its sodium salt and MoO2Cl2 by a literature method.
ChemInform Abstract: Synthesis and Characterization of (C5H5)3M3(CO)6As and (C5H5)2M2(CO)4As2 and Derivatives of the Arsanetriyl Tetrahedrane.
Authors: ZIEGLER M. L. , BLECHSCHMITT K. , NUBER B. , ZAHN T.
Published: May 2016

The cluster compounds (III) and (IV) are prepared from (I) and elemental arsenic in a simple reaction, the new complexes (IV) are the only members lacking until now in the homologous series AsnM4‐n (n = 1‐4).
ChemInform Abstract: Activation of Carbon‐Fluorine Bonds by Oxidative Addition.
Authors: RICHMOND T. G. , OSTERBERG C. E. , ARIF A. M.
Published: May 2016

It is demonstrated that chelate‐assisted oxidative addition of a phenyl‐fluoride bond occurs in high yield to afford a stable tungsten(II) metallacycle such as (V) with the cleaved fluorine atom bound to the metal center.
ChemInform Abstract: Iron‐Oxo Aggregates. Crystal Structures and Solution Characterization of 2‐Hydroxy‐1,3‐xylylenediaminetetraacetic Acid Complexes.
Authors: MURCH B. P. , BRADLEY F. C. , BOYLE P. D. , PAPAEFTHYMIOU V. , QUE L. JUN.
Published: May 2016

The functional groups of the binucleating ligands (I) provide a coordination environment with high affinity for iron(III).
ChemInform Abstract: Synthesis and Reactivity of Dienylmetal Compounds. Part 29. Protonation of C5H5FeC6H7 to Cyclohexadiene and Consequent Reactions.
Authors: KUHN N. , SCHUMANN H. , WINTER M. , ZAUDER E.
Published: May 2016

The complex (I) is obtained quantitatively from the title compound and HBF4·Et2O in CH2Cl2 at ‐50 °C. It is persistent for several hours under these conditions.
ChemInform Abstract: Metal Complexes with Tetrapyrrole Ligands. Part 48. Vilsmeier Formylation of Metal Porphyrins of Co(II), Ni(II), Pd(II), Pt(II), Cu(II), Zn(II), Co(III), Cr(III), Mn(III), Fe(III), Al(III), Si(IV), and Pt(IV) and Its Dependence on the Central Metal.
Authors: BUCHLER J. W. , DREHER C. , HERGET G.
Published: May 2016

Vilsmeier formylation of tetra‐p‐tolylporphyrin complexes such as (I) or (III) yields the 2‐formyl derivatives, e.g. (II), (IV).
ChemInform Abstract: Synthesis of D,L‐γ‐Hydroxyphosphinothricin, a Potent New Inhibitor of Glutamine Synthetase.
Authors: WALKER D. M. , MCDONALD J. F. , LOGUSCH E. W.
Published: May 2016

N‐Protection of D,L‐homoserine (I), subsequent lactonization and esterification yield the alcohol (IV) which undergoes Swern oxidation to give the aldehyde (V).
ChemInform Abstract: Synthesis of the Novel Monocyclic β‐Lactam Proclavaminic Acid.
Authors: BAGGALEY K. H. , SIME J. T. , NICHOLSON N. H. , ELSON S. W. , GILLETT J. , HOLLAND S. , WORONIECKI S. R.
Published: May 2016

Coupling of the azetidinone (I) with the azidopropionaldehyde (II) and subsequent hydrogenation produce proclavaminic acid (IV).
ChemInform Abstract: Application of the Two‐Directional Chain Synthesis Strategy to the First Stereochemical Assignment of Structure to Members of the Skipped‐Polyol Polyene Macrolide Class: Mycoticin A and B.
Authors: SCHREIBER S. L. , GOULET M. T.
Published: May 2016

The tetraacetonide (VI) is prepared from the achiral precursor (I); the key step being the conversion of (II) to (V).
ChemInform Abstract: Pheromones. Part 65. Identification of the Volatile Components of the Mandibular Gland Secretion of the Ant Manica rubida: Structure Elucidation, Synthesis, and Absolute Configuration of Manicone.
Authors: BESTMANN H. J. , ATTYGALLE A. B. , GLASBRENNER J. , RIEMER R. , VOSTROWSKY O. , GOMES CONSTANTINO M. , MELIKIAN G. , MORGAN E. D.
Published: May 2016

Manicone (Ia) is identified as the main component of the title species.
ChemInform Abstract: Halolactonization for a Stereocontrolled Synthesis of rac‐Isolineatin.
Authors: ASKANI R. , KELLER U.
Published: May 2016

The anhydride (I) is regioselectively transformed to the mono‐esters (III) which are converted to the compounds (IV) or (V).
ChemInform Abstract: Na2PrO3 (I) and Na2TbO3 (II).
Authors: WOLF R. , HOPPE R.
Published: May 2016

Single crystals of the title compounds are prepared by reaction of Na2O with Li8TbO6 (750 °C, 30 d) and Li8PrO6 (700 °C, 23 d), respectively.
ChemInform Abstract: Study of Copper Contamination in Air or Nitrogen Containing Hydrogen Sulfide and Nitrogen Dioxide.
Authors: SIMON D. , PERRIN C. , MOLLIMARD D.
Published: May 2016

It is shown that the rate of copper sulfidation is much greater in air containing 0.1 ppm H2S (925 Å of Cu2S after 72 h in dry air) than in dry or humid nitrogen containing 0.1 ppm H2S (116 Å after 72 h in humid N2; 70 Å in dry N2).
ChemInform Abstract: A Zintl Phase with Isolated SnSb8‐ 4 Anions, Na8SnSb4
Authors: EISENMANN B. , KLEIN J.
Published: May 2016

, is prepared by annealing a stoichiometric mixture of the elements (700 °C, 2 h, sealed silica tube coated with glassy carbon, no yield given).
ChemInform Abstract: Manufacture and Hydriding Characteristics of Unidirectionally Solidified LaNi5‐Ni Eutectic Alloys with Disintegration Resistance.
Authors: OGAWA T. , OHNISHI K. , MISAWA T.
Published: May 2016

Unidirectionally solidified LaNi5‐Ni eutectic alloys are successfully prepared and their microstructural variation, disintegration resistance and hydrogen absorption characteristics are reported.
ChemInform Abstract: Free‐Energy Dependence of the Ion Yield of Photo‐Induced Electron‐Transfer Reactions in Solution.
Authors: VAUTHEY E. , SUPPAN P. , HASELBACH E.
Published: May 2016

The photoinduced ET reactions in MeCN with 9,10‐dicyanoanthracene as acceptor and 21 electron donors such as Ph‐Ph, p‐xylene, Ph‐O‐Me, fluorene, durene, 1,4‐di‐, 1,2,3‐, 1,2,4‐, 1,3,5‐trimethoxybenzene, aniline, N,N‐dimethyl‐, ‐diethylaniline, and Et3N are studied by use of transient photoconductivity measurements.
ChemInform Abstract: Reduction of n‐C5H11N3 Catalyzed by Single Cubane Clusters with Mo‐Fe‐S and Fe‐S Cores, Mediated with Methyl Viologen in Aqueous Micellar Solutions.
Authors: TANAKA K. , MORIYA M. , UEZUMI S. , TANAKA T.
Published: May 2016

In the cubane cluster (I), formed in polar organic solvents by dissociation of a Mo‐Fe‐S double cubane cluster, the solvent molecule L coordinated to Mo is easily substituted by the azide (III).
ChemInform Abstract: An Efficient Synthesis of Optically Pure (S)‐(‐)‐3‐Methylcyclohexanone.
Authors: THURKAUF A. , HILLERY P. , JACOBSON A. E. , RICE K. C.
Published: May 2016

Optically active 3‐methylpiperidine (S)‐(I) is cleaved to give the dibromide (II) which reacts with methyl methylsulfinylmethyl sulfide (III), producing the methylcyclohexanone dithioacetal mono‐S‐oxide (IV).
ChemInform Abstract: Amidation of Chloroalkenes Catalyzed by Tertiary Phosphine Complexes of Palladium(0).
Authors: NICHOLAS P. P.
Published: May 2016

Amidation of vinyl chloride (I) with the amines (II) and carbon monoxide (III) in the presence of a palladium(0) catalyst results in the formation of the amides (IV).
ChemInform Abstract: Synthesis and Stereodynamics of N‐Acylamidines.
Authors: ZOBOVA N. N. , AGANOV A. V. , KLOCHKOV V. V. , NAZYROVA A. Z.
Published: May 2016

Reaction of the dimethylamides (I) with dichloroacetyl isocyanate (II) gives the amidines (IIIa) or (IIIb) and/or the oxadiazines (IVb) and (IVc).
ChemInform Abstract: Asymmetric Oxidation of Chiral Enolates in the Preparation of Acyclic Tertiary α‐Hydroxy Amides in High Optical Purity.
Authors: DAVIS F. A. , ULATOWSKI T. G. , HAQUE M. S.
Published: May 2016

The lithium enolates of the carboxylic acid derivatives (I) are oxidized with the chiral oxaziridine (II) to give the optically active α‐hydroxy carboxylates or carboxamides (III).
ChemInform Abstract: Cobalt‐Catalyzed Reaction of Nitric Oxide with Aryl‐Substituted Olefins in the Presence of Tetrahydroborate Ion.
Authors: OKAMOTO T. , KOBAYASHI K. , OKA S. , TANIMOTO S.
Published: May 2016

Reductive nitrosation of the olefins (I) in the presence of a cobalt catalyst yields the oximes (IIIa) ‐ (IIId).
ChemInform Abstract: 4‐(Dimethylamino)pyridine as a Catalyst for Carbon Acylation. Part 2. Control of Carbon vs. Oxygen Acylation in Benzofuranones.
Authors: BLACK T. H. , ARRIVO S. M. , SCHUMM J. S. , KNOBELOCH J. M.
Published: May 2016

The enolate anion of 3‐phenylbenzofuranone (I) undergoes O‐acylation with the chloroformates (II) to yield the benzofuryl carbonates (III) which are easily rearranged in the presence of 4‐(dimethylamino)pyridine, producing the 3‐benzofuranonecarboxylates (IV).
ChemInform Abstract: Synthesis of Some Polyhydroxylated Pyrrolidine Derivatives.
Authors: SETOI H. , KAYAKIRI H. , TAKENO H. , HASHIMOTO M.
Published: May 2016

Cyclization of the carbamate (I) gives the protected pyrrolidine (IIa) which is converted into the polyhydroxypyrrolidines (III) and (V).
ChemInform Abstract: Stereoselection in the Reaction of Acid Halides and Vinylogous Urethanes.
Authors: SCHLESSINGER R. H. , TATA J. R. , SPRINGER J. P.
Published: May 2016

The vinylogous urethane (I) is lithiated and then coupled with trimethylsilyl chloride (II) to yield the ketene acetal (III).
ChemInform Abstract: Condensed Heterotricycles. Synthesis and Reactions of b‐Fused 1(2H)‐Isoquinolinones with Unusual Enamine Properties.
Authors: NAGARAJAN K. , RAO V. R. , SHAH R. K. , SHENOY S. J. , FRITZ H. , RICHTER W. J. , MULLER D.
Published: May 2016

The heterocycles (III), (V) (obtained from the reaction of the respective compounds (I) + (II) or (IV)) exhibit marked enamine character.
ChemInform Abstract: Cycloaddition of Trichloronitrosomethane to Conjugated Dienes.
Authors: LIN C.‐T. , CHEN J.‐H.
Published: May 2016

The nitroso compound (II) reacts with the cyclic dienes (I) to give the non‐hydrolyzable adducts (III).
ChemInform Abstract: Practical Enantioselective Synthesis of a Homotyrosine Derivatives and (R,R)‐4‐Propyl‐9‐hydroxynaphthoxazine, a Potent Dopamine Agonist.
Authors: MELILLO D. G. , LARSEN R. D. , MATHRE D. J. , SHUKIS W. F. , WOOD A. W. , COLLELUORI J. R.
Published: May 2016

The Grignard compound (I) reacts with the oxalic ester (II), yielding the corresponding keto ester which is hydrolyzed to give the acid (III).
ChemInform Abstract: Substituent Effects in the Aliphatic Claisen Rearrangement of Substituted (1‐Methyl‐3‐oxahexa‐1,5‐dienyl)amines: Synthesis of Substituted 2‐Aminopent‐4‐enals. Alternative (1,3)‐Sigmatropic Shifts in Related Aromatic Systems.
Authors: BARLUENGA J. , AZNAR F. , LIZ R. , BAYOD M.
Published: May 2016

The propargylic ethers (I) and (V) are coupled with the amines (II) or (VI) in the presence of mercury salts to give the enamines (III) and (VII) which undergo sigmatropic rearrangement upon heating to yield the α‐amino aldehydes (IV) or (VIII).
ChemInform Abstract: Synthesis and Fungitoxicity of New 1,3,4‐Oxadiazolo(3,2‐a)‐s‐triazine‐5,7‐diones and Their Thione Analogues.
Authors: SINGH H. , MISRA A. R. , YADAV L. D. S.
Published: May 2016

The title compounds (V), (VII), (X), (XII) and the intermediates (IV), (IX) are tested for their antifungal activity using Dithane M‐45 as standard.
ChemInform Abstract: Intramolecular Cyclization Products from Alkanolamines and Epichlorohydrin.
Authors: BURIKS R. S. , LOVETT E. G.
Published: May 2016

The ethanolammonium chloride (I) reacts with epichlorohydrin (II) to give the ammonium salt (III) which is converted into the epoxide (IV).
ChemInform Abstract: Fluoro(nitrile)xenon(II) Cations, RCN‐XeF+ AsF6‐ (R = H, CH3, CH2F, C2H5, C2F5, C3F7, or C6F5); Novel Examples of Xenon‐Nitrogen Bonds and 129Xe‐13C, 129Xe‐1H, and 129Xe‐14N Nuclear Spin‐Spin Couplings.
Authors: EMARA A. A. A. , SCHROBILGEN G. J.
Published: May 2016

Hydrogen cyanide and the nitriles (I) react with the xenon salts (II) or (IV) to produce the adducts (III).
ChemInform Abstract: New Chiral Bicyclic Phosphoramides Derived from L‐Glutamic Acid.
Authors: PEYRONEL J.‐F. , SAMUEL O. , FIAUD J. C.
Published: May 2016

Cyclocondensation of the chiral diamines (I) with the phosphoramidic dichlorides (II) or (IV) gives the hexahydropyrrolodiazaphospholes (III) and (V).
ChemInform Abstract: Reaction of o‐ and m‐Carborane with Elemental Selenium.
Authors: RYS E. G. , BALEMA V. P. , GODOVIKOV N. N.
Published: May 2016

The AlCl3‐promoted reaction of o‐carborane (IIIa) or m‐carborane (IIIb) with selenium (II) under inert gas gives the selenols (I).
ChemInform Abstract: Synthesis, Reactivity, and Crystal Structure of CpV(CO)3tht (tht = Tetrahydrothiophene). A Mild‐Condition Synthetic Pathway to Substitution Derivatives of CpV(CO)4 and Preparation and X‐Ray Characterization of cis‐CpV(CO)2bpy (bpy = 2,2′‐Bipyridine).
Authors: GAMBAROTTA S. , CHIESI‐VILLA A. , GUASTINI C.
Published: May 2016

The isolable title complex (III) is obtained according to the scheme.
ChemInform Abstract: Oxygen Atom Transfer Reaction to Metal Carbonyls. Kinetics and Mechanism of CO‐Substitution Reactions of Mo(CO)5L in the Presence of (CH3)3NO.
Authors: GAO Y.‐C. , SHI Q.‐Z. , KERSHNER D. L. , BASOLO F.
Published: May 2016

The CO‐substitution in (I) is first order with respect to both (I) and the amine oxide but zero order with respect to (II).
ChemInform Abstract: Synthesis of (Phthalocyaninato)rhodium(III) Complexes.
Authors: MUENZ X. + , HANACK M.
Published: May 2016

The mixed complexes (III) are formed by reaction of (I) with the neutral ligands L (mostly in excess) and characterized by IR and electronic spectra and thermogravimetric data.
ChemInform Abstract: Transition‐Metal‐Promoted Cyclization Reactions of Isocyanide Ligands. Synthesis of Cyclic Diaminocarbenes from Isocyanide Complexes of Palladium(II) and Platinum(II) and X‐Ray Structure of Cyclic cis‐Br2Pt(CN(C6H4‐p‐Me)CH2CH2N(H))(PPh3).
Authors: MICHELIN R. A. , ZANOTTO L. , BRAGA D. , SABATINO P. , ANGELICI R. J.
Published: May 2016

Electrophilic isocyanide ligands in cationic complexes (I) are converted to the 5‐membered cyclic title complexes (III) as shown in the scheme.
ChemInform Abstract: Improved Procedure for Attachment of Amino Acids to Polymer in Peptide Synthesis by Liquid‐Phase Method.
Authors: RAHMAN S. A. , HATTABA A. A.
Published: May 2016

Protected amino acids are converted to their cesium salts which are esterified with p‐bromomethylbenzoyl hydrazide under mild conditions without racemization.
ChemInform Abstract: Syntheses of Sandwicoline and Its Diastereomers.
Authors: HAIDER S. I. , AHMAD S. S. , SIDDIQUI S.
Published: May 2016

Reduction of sandwicine (Ia) followed by methylation yields the desired sandwicoline (IIIa), a constituent of Rauwolfia serpentina Benth.
ChemInform Abstract: Chelate Selectivity in Chelation‐Controlled Allylations. A New Synthesis of Castanospermine and Other Bioactive Indolizidine Alkaloids.
Authors: HAMANA H. , IKOTA N. , GANEM B.
Published: May 2016

Coupling of the aldehyde (I) with allylmagnesium chloride (II) or allyltrimethylsilane (IV) yields the homoallylic alcohols (III).
ChemInform Abstract: Enantioselective Synthesis of Monocyclic β‐Lactams Related to Nocardicins via a (2+2) Cycloaddition Reaction.
Authors: NAKAGUCHI O. , OKU T. , TAKENO H. , HASHIMOTO M. , KAMIYA T.
Published: May 2016

Cycloaddition reaction of a ketene with formamidines, both of them in generated in situ, gives the β‐lactams (III) as the main products.
ChemInform Abstract: The Crystal Structure of Nonachlorodimolybdenum(V) Heptachlorodioxodimolybdate(V).
Authors: EDWARDS A. J. , SLIM D. R.
Published: May 2016

The compound Mo2Cl8O, obtained as a minor product of the interaction of SOCl2 with molybdic acid, crystallizes in the monoclinic system, space group P2/c, Z=2.
ChemInform Abstract: Characterization of Se‐Loaded Molecular Sieves A, X, Y, AlPO‐5, and Mordenite
Authors: PARISE J. B. , MACDOUGALL J. E. , HERRON N. , FARLEE R. , SLEIGHT A. W. , WANG Y. , BEIN T. , MOLLER K. , MORONEY L. M.
Published: May 2016

by combining EXAFS and solid‐state NMR spectroscopy with optical absorption experiments.
ChemInform Abstract: Electrical Conduction in γ‐Irradiated and Unirradiated Zinc‐Iron Ferrites.
Authors: MOUSA M. A. , AHMED M. A.
Published: May 2016

Electrical conductivity data of irradiated and unirradiated ZnxFe3‐xO4 spinels with x ≤ 0.79, measured between 9 and 900 K, can be explained by a hopping mechanism (electron exchange between Fe2+/Fe3+ on octahedral sites).
ChemInform Abstract: The Thermochemistry of Ammonium Compounds and the Energy Barrier Opposing Ammonium Ion Reorientation.
Authors: JOHNSON D. A.
Published: May 2016

A good linear correlation between the energy barrier opposing cation reorientation in a compound (NH4)nX and the quantity (Xn‐) = 1/n(ΔHf°((NH4)nX,s) ‐ ΔHf°(RbnX,s)) is discussed and used to predict thermodynamic properties of both known and unknown compounds.
ChemInform Abstract: Electrochemical Overcharge Protection of Rechargeable Lithium Batteries. Part 2. The Effect of Lithium Iodide‐Iodine Additives on the Behavior of Lithium Electrode in LiAsF6‐THF Solutions
Authors: BEHL W. K. , CHIN D.‐T.
Published: May 2016

is investigated with the rotating disk and potentiostatic transient techniques.
ChemInform Abstract: Synthesis and Characterization of Na2Ti2Se8, a New One‐Dimensional Solid‐State Polyselenide.
Authors: KANG D. , IBERS J. A.
Published: May 2016

The title compound, prepared by reaction of Ti metal with a Na2Se/Se flux in an evacuated Si tube (∼ 10‐5 torr) at 345 °C (100 h, yield ∼ 18%), crystallizes in the monoclinic system, space group C5 2h‐P21/c, Z=4 at ‐160 °C. Its structure is composed of infinite, one‐dimensional Ti/Se chains running parallel to c. In these chains, which are isolated from one another by the Na+ cations, the Ti centers are seven‐coordinate.
ChemInform Abstract: Synthesis and Ion‐Exchange Behavior of New Three‐Component Ion‐Exchange Material: Zirconium(IV) Iodomolybdate.
Authors: QURESHI S. Z. , RAHMAN N.
Published: May 2016

Among various samples of zirconium(IV) iodomolybdate, synthesized under varying conditions at pH 1, the most stable sample is chosen for detailed investigations.
ChemInform Abstract: Synthesis, Structure, and 31P and 183W NMR Spectra of P4W14O12‐ 58.
Authors: THOUVENOT R. , TEZE A. , CONTANT R. , HERVE G.
Published: May 2016

The structural characteristics of the title polyanion in the solid state (XRD) and in solution (31P and 183W NMR) are investigated.
ChemInform Abstract: The First X‐Ray Crystalline Structure of the Bis(monoazacrown ether) Complex. A Bis(crown ether) or a Lariat Ether?
Authors: HE G.‐X. , KIKUKAWA K. , OHE H. , MACHIDA M. , MATSUDA T.
Published: May 2016

The crystal structure of the KSCN complex of 1,5‐bis(N‐monoaza‐15‐crown‐5)‐3‐oxapentane (BOA15C5) is investigated and discussed in detail.
ChemInform Abstract: Use of Ir4(CO)11 to Measure the Lengths of Organic Molecules with a Scanning Transmission Electron Microscope.
Authors: FURUYA F. R. , MILLER L. L. , HAINFELD J. F. , CHRISTOPFEL W. C. , KENNY P. W.
Published: May 2016

Studies show that small Ir4(CO)11 clusters are useful for scanning transmission electron microscopy labeling.
ChemInform Abstract: Reaction of Singlet Oxygen with Thiirane: Peroxysulfenic Acid Intermediate as a New Oxidizing Species.
Authors: AKASAKA T. , KAKO M. , SONOBE H. , ANDO W.
Published: May 2016

Photooxygenation of cyclohexene sulfide (I) yields the thiirane oxide (III) via the persulfoxide (II).
ChemInform Abstract: Carbanion Intermediates in the Photodecarboxylation of Benzanellated Acetic Acids in Aqueous Solution.
Authors: MCAULEY I. , KROGH E. , WAN P.
Published: May 2016

Results are reported which show that the photodecarboxylation of benzanellated acetic acids (I) and (III) proceeds via carbanion intermediates and in addition, that eight‐electron (4n) carbanions (in a conjugated cyclic π‐system) are better accommodated than six‐electron (4n + 2) carbanions in the excited singlet state.
ChemInform Abstract: Photochemical and Thermal Transformations of 3‐Benzyl‐2(3H)‐furanones and Related Substrates.
Authors: GOPIDAS K. R. , CYR D. R. , DAS P. K. , GEORGE M. V.
Published: May 2016

Direct irradiation of the title compounds (I) in benzene or methanol yields the diphenylfurans (II) and/or the β,γ‐unsaturated phenyl ketones (III).
ChemInform Abstract: Reaction of Phosphorus Ylides with Elemental Selenium: Generation of Selenoaldehydes and Selenium‐Catalyzed Ph3P=CHR Cleavage to Give RHC=CHR and Triphenylphosphine.
Authors: ERKER G. , HOCK R. , NOLTE R.
Published: May 2016

The phosphoranes (I) react with gray selenium via a Wittig olefination‐type reaction of the intermediate selenoaldehydes (II) to give the products (III) and (IV).
ChemInform Abstract: Synthesis of Long‐Chain Methyl‐Branched 1‐Alkynes from Alkylmagnesium Halides and Methoxyallene.
Authors: URDANETA N. A. , MAVROV M. V. , NGUYEN CONG HAO NGUYEN CONG HAO , SEREBRYAKOV E. P.
Published: May 2016

The Grignard compounds (I) react with methoxyallene (II) in the presence of copper(I) bromide to give the alkynes (III), together with small amounts of the allenes (IV).
ChemInform Abstract: Reactions with Betaines. Part 23. Reactions of Nitrogen‐ and Sulfur‐Betaines with Reactive Halides.
Authors: WITTMANN H. , ZIEGLER E.
Published: May 2016

The reaction between betaine (I) and phenacyl bromide (II) (molar ratio 1:1), does not proceed at the ylide carbon atom of (I).
ChemInform Abstract: Organosulfur Chemistry. Part 4. New Reduction of Sulfoxides and Sulfilimines to Sulfides with Zinc/1,4‐Dibromobutane. A Proposal for a Radical‐Forming Electron Transfer Process.
Authors: NAGASAWA K. , YONETA A. , SUGIMOTO H. , ITO K.
Published: May 2016

Reduction of the sulfoxides (I) and sulfilimines (III) with zinc and 1,4‐dibromobutane gives the sulfides (II).
ChemInform Abstract: Electronic Structural Characterization of Cycloheptadienequinone and Cyclopentenequinone Systems Having an Electron Donating Diaminocyclopropenylidene Moiety.
Authors: TAKAHASHI K. , NAMEKATA N. , TAKASE K. , TAKEUCHI A.
Published: May 2016

The chlorodiaminocyclopropenium perchlorate (I) is coupled with β‐tropolone (II) or the cyclic 1,3‐diones (V) to yield the cyclopropylium salt (III) and the cyclopropenylidene compounds (IV) or (VI).
ChemInform Abstract: Organocuprate Chemistry of Vicinal Epoxy Mesylates.
Authors: KURTH M. J. , ABREO M. A.
Published: May 2016

The epoxy mesylate (I) is coupled with the organocuprates (II), yielding the rearranged epoxides (III) which are cleaved with (IIb) to give the isomeric alcohols (IV) and (V).
ChemInform Abstract: On the Use of Epoxy Alcohol‐Aldol Rearrangement for Stereoselective Construction of Quaternary Carbon Centers.
Authors: SHIMAZAKI M. , HARA H. , SUZUKI K. , TSUCHIHASHI G.
Published: May 2016

Hydroxymethyloxirane (I) is oxidized to give the aldehyde which reacts with the Grignard compound (II) to yield the carbinol (III).
ChemInform Abstract: Diastereocontrol via the Phenol‐ and Palladium(II)‐Catalyzed Claisen Rearrangement with Cyclic Enol Ethers.
Authors: MIKAMI K. , TAKAHASHI K. , NAKAI T.
Published: May 2016

The allylic alcohols (I) are coupled with the cyclic enol ethers (II) or (VI) in the presence of various catalysts to form the alkenyl ketones (IV), (V), (VII), or (VIII).
ChemInform Abstract: Reactions of S,S‐Dialkylsulfur Diimides with N‐Cyanimidic Esters: Synthesis of 1λ4,2,4,6‐Thiatriazines.
Authors: RIED W. , JACOBI M. A.
Published: May 2016

The title diimides (I) and (IX) react with the cyanimidates (II) and (X) to afford the condensation products (III), (VIII), and (XI).
ChemInform Abstract: The Synthesis of New 3,4‐Dimethylenethiolane Derivatives.
Authors: BRAVERMAN S. , FREUND M.
Published: May 2016

The thienothiophene (I) is treated with bromine to give the dibromide (II) which is converted to the thioloester (III) and then reduced, forming the thienothiophene (IV).
ChemInform Abstract: The Synthesis and Chemistry of Azolenines. Part 8. The Paal‐Knorr Reaction with Cyclic 2‐(Acylmethyl)‐2‐alkyl‐1,3‐diketones: Isolation of 1‐Acyl‐1H‐pyrroles via Rearrangement.
Authors: MAINI P. N. , SAMMES M. P. , KATRITZKY A. R.
Published: May 2016

Treatment of the cyclic diketones (I) or (IV) with NH4OAc (II) yields the acylpyrroles (III) or (V) via rearrangement.
ChemInform Abstract: Heterocycles from Carbohydrate Precursors. Part 40. Kinetic and Thermodynamic Products of Ketalization of 1‐C‐Substituted L‐threo‐Glycerol: A Regioselective Formation of 1,3‐Dioxolanes.
Authors: EL ASHRY E. S. H. , EL KILANY Y. , SINGAB F.
Published: May 2016

The mode of ketalization of the L‐threo‐glycerol (IIa) with acetone (I) is investigated.
ChemInform Abstract: (4 + 2)Cycloadditions of Diphenyl Ketene with a Highly Substituted 1,3‐Diene.
Authors: MAYR H. , HEIGL U. W.
Published: May 2016

Cycloaddition reaction of the diene (I) with diphenyl ketene (II) gives the bicyclic dihydropyran (III) and the bicyclononenone (IV).
ChemInform Abstract: Mixed Butoxy(chloro)disiloxanes.
Authors: GOL'DIN G. S. , BORISOVA I. YU. , BATURINA L. S. , PUSHAKOVA T. N.
Published: May 2016

Reaction of hexachlorosiloxane (I) with butanol (II) gives the mixed butoxychlorodisiloxanes (III) depending on the molar ratio of the starting materials.
ChemInform Abstract: Silicon Compounds with Strong Intramolecular Steric Interactions. Part 29. Octacyclohexylcyclotetrasilane.
Authors: WEIDENBRUCH M. , THOM K.‐L. , POHL S. , SAAK W.
Published: May 2016

Reductive chloride elimination from 1,4‐dichlorooctacyclohexyltetrasilane (II) prepared as shown yields the title compound (III).
ChemInform Abstract: Trapping Reactions for Unstable (1‐Chloro‐2,2,2‐trifluoro‐1‐(trifluoromethyl)ethyl) Dialkyl Phosphites.
Authors: HEINE J. , ROESCHENTHALER G.‐V. +
Published: May 2016

The thermally unstable phosphites (I) and (II) are formed by 1:2 molar reaction of the chlorophosphites (III) and (VII) with hexafluoroacetone (IV) besides other products.
ChemInform Abstract: Reaction of Alkyl Halides with the Aluminum Chloride Complex of Diphenylchlorophosphine and Hydrogen Chloride. Comparison with the Kinnear‐Perren‐Clay Reaction.
Authors: CHAUZOV V. A. , STUDNEV YU. N. , RUDNITSKAYA L. S. , FOKIN A. V.
Published: May 2016

Alkylation of the complex (I) with the butyl halides (II) leads always to the formation of the tert‐butylphosphine oxide (III), together with the hydrocarbons (IV) and (V).
ChemInform Abstract: Photochemical P‐H Insertion of Carbenes. Synthesis and Keto‐Enol Tautomerism as 2‐Thiophosphoryl‐Substituted 1,3‐Dicarbonyl Compounds.
Authors: POLOZOV A. M. , POLEZHAEVA N. A. , ARBUZOV B. A.
Published: May 2016

Triplet‐sensitized photolysis of the diazo dicarbonyl compounds (I) in the presence of an excess of the thiophosphite (II) yields the thiophosphorylated dicarbonyl compounds (III).
ChemInform Abstract: 5‐Substituted 2‐Chloromethylfurans in the Michaelis‐Becker Reaction.
Authors: PEVZNER L. M. , IGNAT'EV V. M. , IONIN B. I.
Published: May 2016

The 5‐alkoxy‐2‐chlormethylfurans (I) react with the phosphite (II) to form the phosphonates (III).
ChemInform Abstract: 2‐Diamino‐1,3,2λ5,4‐diazaphosphasiletidin‐2‐onium Chlorides.
Authors: ZAL'TSMAN I. S. , KOIDAN G. N. , FILONENKO L. P. , MARCHENKO A. P. , PINCHUK A. M.
Published: May 2016

Reaction of the phosphorimidic triamide (I) with the dichlorosilane (II) gives the title compounds (III).
ChemInform Abstract: Reactions of (Cyclopentadienyl)rhenium Halide Complexes (η5‐C5H5)Re(NO)(PPh3)(X) with n‐BuLi/TMEDA; Generation and Methylation of Lithio‐ and Dilithiocyclopentadienyl Ligands.
Authors: CROCCO G. L. , GLADYSZ J. A.
Published: May 2016

The reaction of (I) with BuLi affords monolithiated compounds which are isolated after subsequent methylation and characterized by IR, mass, 1H, 13C and 31P NMR spectra.
ChemInform Abstract: A New Type of Unsaturated triangulo Transition‐Metal Cluster and Homogeneous Catalyst.
Authors: HAUPT H.‐J. , BALSAA P. , FLOERKE U. +
Published: May 2016

The preparation of the di(μ3‐hydrido)triruthenium cluster (II) with 44 cluster valence electrons (CVE) occurs either by hydrogenolysis of the binuclear cluster (I) or by thermolysis of the hydrido‐ and phosphido‐bridged diruthenium cluster (IV) or its bis(μ‐phosphido) analogue.
ChemInform Abstract: Neutral Square Planar Cobalt(III) Complexes.
Authors: BREWER J. C. , COLLINS T. J. , SMITH M. R. , SANTARSIERO B. D.
Published: May 2016

The monoanionic square‐planar Co(III) complex (IIIa) is obtained according to the scheme and characterized by 1H NMR and IR spectroscopy, solid state and solution magnetic properties, and X‐ray structure analysis (space group P1, Z=2).
ChemInform Abstract: Oxidative Additions and Luminescence Involving IrAuIr Chains Formed by Binding of Gold(I) to the Metallamacrocycle Ir2Cl2(CO)2(μ‐Ph2PCH2As(Ph)CH2PPh2)2.
Authors: BALCH A. L. , NAGLE J. K. , ORAM D. E. , REEDY P. E. JUN.
Published: May 2016

Treatment of the diphosphine‐bridged Ir(I) complex (I) with ClAu(CO) (II) yields the gold(I) derivative (IIIa) which can be converted into the analogues (IIIb) and (IIIc) by metathesis.
ChemInform Abstract: Asymmetric Synthesis of Anthracyclinones Using Chiral Acetal: Synthesis of a New Chiral AB‐Synthon. (‐)‐2‐Bromo‐6‐ethynyl‐6‐hydroxy‐5,6,7,8‐tetrahydro‐1,4‐naphthoquinone, and Its Application for (‐)‐7‐Deoxydaunomycinone.
Authors: TAMURA Y. , ANNOURA H. , YAMAMOTO H. , KONDO H. , KITA Y. , FUJIOKA H.
Published: May 2016

The tetralindione monoacetal (VI) is prepared from the arylbutyric acid (I) as shown in the reaction scheme.
ChemInform Abstract: Deposition of Nonstoichiometric TiC at High Temperature
Authors: TEYSSANDIER F. , BERNARD C. , DUCARRIOR M.
Published: May 2016

(1900 K) on Mo is achieved by using TiCl4, CH4, and H2 mixtures.
Methods to model and simulate super carbon nanotubes of higher order
Authors: Burger Michael , Bischof Christian , Schröppel Christian , Wackerfuß Jens
Published: May 2016

Super carbon nanotubes (SCNTs) are of interest in material design because of their strength and weight characteristics. In this paper, we present a graph algebra‐based approach to model and construct SCNTs of arbitrary order. The SCNTs are represented by directed graphs with Y junctions as basic modeling element. A new data structure to store these graphs is proposed that capitalizes on the hierarchy within SCNTs and allows efficient queries for nodes and edges. Symmetry considerations for SCNTs are conducted and related to the graph algebra‐based modeling. We present an extended and improved algorithm for simulating the mechanical behavior of SCNTs. Compared with our previous work on level 0 SCNTs, the performance is improved by a factor higher than 2 when running in serial and a factor up to 4.4 when running in parallel on a 16‐core symmetric multiprocessing system. A new pre‐processing step exploiting structural symmetry and an improved proximity‐aware matrix‐vector‐multiplication routine make this performance improvement possible while only consuming little additional memory. We also now consider SCNTs of order 1 and 2. Experimental results show that our new solver is up to 1.4 times faster than a compressed‐row‐storage based reference solver, on order 0, 1, and 2 SCNTs, with and without deformations, while requiring only half the memory. Because memory is the limiting factor for the feasibility of such simulations, our new approach significantly expands the realm of feasibility for such simulations. Copyright © 2016 John Wiley & Sons, Ltd.
Measuring size and composition of species pools: a comparison of dark diversity estimates
Authors: de Bello Francesco , Fibich Pavel , Zelený David , Kopecký Martin , Mudrák Ondřej , Chytrý Milan , Pyšek Petr , Wild Jan , Michalcová Dana , Sádlo Jiří , Šmilauer Petr , Lepš Jan , Pärtel Meelis
Published: May 2016

Ecological theory and biodiversity conservation have traditionally relied on the number of species recorded at a site, but it is agreed that site richness represents only a portion of the species that can inhabit particular ecological conditions, that is, the habitat‐specific species pool. Knowledge of the species pool at different sites enables meaningful comparisons of biodiversity and provides insights into processes of biodiversity formation. Empirical studies, however, are limited due to conceptual and methodological difficulties in determining both the size and composition of the absent part of species pools, the so‐called dark diversity. We used >50,000 vegetation plots from 18 types of habitats throughout the Czech Republic, most of which served as a training dataset and 1083 as a subset of test sites. These data were used to compare predicted results from three quantitative methods with those of previously published expert estimates based on species habitat preferences: (1) species co‐occurrence based on Beals' smoothing approach; (2) species ecological requirements, with envelopes around community mean Ellenberg values; and (3) species distribution models, using species environmental niches modeled by Biomod software. Dark diversity estimates were compared at both plot and habitat levels, and each method was applied in different configurations. While there were some differences in the results obtained by different methods, particularly at the plot level, there was a clear convergence, especially at the habitat level. The better convergence at the habitat level reflects less variation in local environmental conditions, whereas variation at the plot level is an effect of each particular method. The co‐occurrence agreed closest the expert estimate, followed by the method based on species ecological requirements. We conclude that several analytical methods can estimate species pools of given habitats. However, the strengths and weaknesses of different methods need attention, especially when dark diversity is estimated at the plot level.
A new field approach for the collection of samples for aquatic 14CO2 analysis using headspace equilibration and molecular sieve traps: the super headspace method
Authors: Garnett M. H. , Billett M. F. , Gulliver P. , Dean J. F.
Published: May 2016

Carbon dioxide evasion from inland waters such as lakes, rivers and streams represents a significant component of the global carbon cycle, yet in many parts of the world, relatively little is known about its source. Radiocarbon dating of aquatic CO2 has the potential to provide new insights into C cycling in the terrestrial–aquatic–atmosphere continuum, and whilst a range of methods are available for the collection of samples for 14C analysis, they all have limitations or disadvantages (e.g. slow collection rates and potential non‐equilibrium). These issues are further compounded in remote field sites. Here, we describe a new method for the field collection of CO2 samples from low‐pH waters (pH < 7) for radiocarbon analysis, which involves a scaled‐up version of the widely used headspace equilibration technique coupled with syringe injection of samples into molecular sieve traps for convenient and stable storage. We present the results of laboratory and field tests to verify this ‘super headspace method’ and discuss its advantages compared with existing techniques, particularly for sampling in remote locations. This includes its high portability, speed of use and absence of any special sample preservation requirements. Copyright © 2016 John Wiley & Sons, Ltd.