bluuebunny/crossref_metadata_2025 huggingface dataset:
ChemInform Abstract: Diels‐Alder Reactions in Nonaqueous Polar Solvents. Kinetic Effects of Chaotropic and Antichaotropic Agents and of β‐Cyclodextrin.
Authors: BRESLOW R. , GUO T.
Published: May 2016

To gain additional insight into the nature of chaotropic effects, the kinetics of two Diels‐Alder reactions in two solvents (see scheme) are measured and compared to literature data for other solvents.
ChemInform Abstract: Ternary Complexes in Solutions. Part 50. Dependence of Intramolecular Hydrophobic Ligand‐Ligand Interactions on Ligand Structure, Geometry of the Coordination Sphere of the Metal Ion, and Solvent Composition. Opposing Solvent Effects.
Authors: LIANG G. , TRIBOLET R. , SIGEL H.
Published: May 2016

Stability constants of mixed‐ligand complexes (I) are determined by potentiometric pH titration in aqueous solution and in EtOH/H2O or dioxane/H2O (1:1) and compared with the stabilities of the corresponding formate or acetate complexes.
ChemInform Abstract: The Electrochemistry of Iron Porphyrin Nitrosyls in the Presence of Pyridines and Amines.
Authors: CHOI I.‐K. , RYAN M. D.
Published: May 2016

The effect of nitrogen base coordination on the stability and redox chemistry of the iron nitrosyl is investigated.
ChemInform Abstract: Preparative Chromatographic Resolution of Synthetically Useful Cyclic Acetals.
Authors: SEEBACH D. , MUELLER S. G. + , GYSEL U. , ZIMMERMANN J.
Published: May 2016

The racemic cyclic acetals (I)‐(V) derived from aldehydes and glycine, glycolic acid, thioglycolic acid, formylacetic acid and acetoacetic acid are resolved by preparative high‐pressure liquid chromatography on silica gel coated with the polymer from N‐acryloylphenylalanine ethyl ester (Chiraspher).
ChemInform Abstract: 1,6‐Addition of Carbanionic Reagents to 10‐Methyl Hexahydronaphthalenone.
Authors: HATZIGRIGORIOU E. , ROUX‐SCHMITT M.‐C. , WARTSKI L. , SEYDEN‐PENNE J.
Published: May 2016

1,6‐Addition of carbanionic reagents such as (II), (IV)‐(VII) to the bicyclic dienone (I) requires anionic activation.
ChemInform Abstract: 3‐Bromo‐2‐tert.‐butylsulfonyl‐1‐propene, a Versatile Multi‐Coupling Reagent. Part 2.
Authors: AUVRAY P. , KNOCHEL P. , NORMANT J. F.
Published: May 2016

Functionalized vinyl sulfones such as (I), (IV), or (XII) are obtainable from the title compound and respective nucleophiles or electrophiles, as previously reported.
ChemInform Abstract: Diastereoselectivity in the Diels‐Alder Reactions of Thioaldehydes.
Authors: VEDEJS E. , STULTS J. S. , WILDE R. G.
Published: May 2016

The Diels‐Alder reaction of cyclopentadiene (I) with the thioaldehydes (II) ‐ generated in situ by photolysis of the corresponding phenacyl sulfides ‐ occurs with preference for the endo isomers (III); the selectivities are influenced by the bulkyness of the substituents.
ChemInform Abstract: Chemistry of Enol Ethers. Part 84. Condensation of Acetals of Saturated Aldehydes with 2‐Trimethylsilyloxy‐1,3‐dienes. Synthesis of β‐Alkoxyalkyl Vinyl and Divinyl Ketones.
Authors: MAKIN S. M. , NAZAROVA O. N. , DYMSHAKOVA G. M. , KUNDRYUTSKOVA L. A.
Published: May 2016

In the presence of Lewis acids the condensation of the 2‐trimethylsilyloxydiene (I) with the acetals (II) proceeds at the positions 1 and 2 of the diene to give the β‐alkoxyalkyl vinyl ketones (III) in fair yields.
ChemInform Abstract: Photochemistry of Benzobicyclo(2.2.2)octan‐2‐ones.
Authors: BECKWITH P. L. M. , GHISALBERTI E. L. , JEFFERIES P. R. , RASTON C. L. , WHITE A. H.
Published: May 2016

The utility of the title reaction for the synthesis of bicyclic compounds related to calamenene (cf.
ChemInform Abstract: Stereoselective E‐ and Z‐Olefin Formation by Wittig Olefination of Aldehydes with Allylic Phosphorus Ylides. Stereochemistry.
Authors: TAMURA R. , SAEGUSA K. , KAKIHANA M. , ODA D.
Published: May 2016

The stereochemical results of the Wittig reaction of allylic phosphonium salts such as (I) and (V) with the aldehydes (II) are described.
ChemInform Abstract: Generation and Characterization of Transient 3H‐Indolium‐methanides.
Authors: DOEPP D. + , REHMER G. , BRUEGGEMANN H. +
Published: May 2016

The title compounds (III) are generated by a silylmethylation/desilylation method and trapped with various dipolarophiles to give the products shown in the scheme.
ChemInform Abstract: A Novel Acid‐Catalyzed Transformation of 2‐Alkoxy‐1,3‐benzodioxoles.
Authors: SAFIEV O. G. , NAZAROV D. V. , ZORIN V. V. , RAKHMANKULOV D. L.
Published: May 2016

Acid catalyzed reaction of ethoxybenzodioxole (I) yields the olefin (II).
ChemInform Abstract: Cross‐Conjugated and Pseudo‐Cross‐Coupling Mesomeric Betaines. Part 2. Structure and Reactivity.
Authors: POTTS K. T. , MURPHY P. M. , DELUCA M. R. , KUEHNLING W. R.
Published: May 2016

Various (pseudo)cross‐conjugated betaines such as (I) which contain fused N‐heterocycles are investigated in detail: Their structures are determined by X‐ray analysis and compared to those obtained by MINDO/3 calculations.
ChemInform Abstract: Efficacious Entry into Substituted 5,6‐Dihydro‐4‐hydroxy‐2H‐pyran‐2‐ones and 2,3‐Dihydro‐4H‐pyran‐4‐ones Utilizing Ketonic Dianions.
Authors: PETERSON J. R. , WINTER T. J. , MILLER C. P.
Published: May 2016

Methyl acetoacetate (I) is converted to its dianion and then coupled with the carbonyl compounds (II), yielding the δ‐hydroxy‐β‐ketocarboxylates (III) which are cyclized to form the hydroxypyran‐2‐ones (IV).
ChemInform Abstract: Synthesis of 2,5‐Di(p‐aminophenyl)pyrimidine.
Authors: BOROVIK V. P. , SEMIKOLENOV V. A. , MAMAEV V. P.
Published: May 2016

A novel method of preparation of the title compound (V) is described.
ChemInform Abstract: Synthesis and Structure of 6,7‐Dihydro‐2,3‐disubstituted 5H‐2a‐Thia(2a‐S(IV))‐2,3‐4a,7a‐tetraazacyclopent(cd)indene‐1,4(2H,3H)‐dithione.
Authors: MATSUMURA N. , TOMURA M. , MORI O. , TSUCHIYA Y. , YONEDA S. , TORIUMI K.
Published: May 2016

The dianion generated from (I) reacts with phenacyl chloride (II) and the isothiocyanates (III) in a one‐pot reaction to give the symmetrical tetraazapentalenes (IV); unsymmetrical analogues such as (VII) are prepared from (IVa) via the thiadiazolopyrimidines (V).
ChemInform Abstract: Syntheses of E‐2‐Nitroethenyltrimethylsilane.
Authors: CUNICO R. F.
Published: May 2016

The title compound (IV) is prepared from trimethylvinylsilane (I) by three different methods: Addition of nitryl chloride (II) to (I) gives the (1‐chloro‐2‐nitroethyl)silane (III) which undergoes dehydrochlorination upon heating with anhydrous sodium acetate to yield (IV).
ChemInform Abstract: Structure and Stability of Cyano Derivatives of Organochlorophosphate(V) Ions.
Authors: ALI R. , DILLON K. B.
Published: May 2016

The substitution reactions of the organopentachlorophosphate(V) ions obtained from (I) and (V) with AgCN (III) yielding the end products (IV) and (VI) are investigated by means of 31P NMR spectroscopy.
ChemInform Abstract: A New Bicyclic System with a P(V)‐P(III)‐P(V) Unit.
Authors: ROESKY H. W. , SCHOLZ U. , SCHMIDPETER A. , KARAGHIOSOFF K. , SHELDRICK W. S.
Published: May 2016

The bicyclic systems (III) and (V) containing a P(V)‐P(III)‐P(V) unit are prepared by the 2:3 molar reactions according to the scheme.
ChemInform Abstract: Introducing New Phosphorus Substituents in Terminal Phosphinidene Complexes. An Illustration with ((Ethoxycarbonyl)phosphinidene)‐, (tert.‐Butoxyphosphinidene)‐, and (Fluorenylphosphinidene)pentacarbonyltungsten Complexes.
Authors: HOLAND S. , MATHEY F.
Published: May 2016

The reaction of ethyl chloroformate (II) with the (phosphoryl)lithium complex (I) yields the corresponding 1‐(ethoxycarbonyl)phosphole complex (III).
ChemInform Abstract: Synthesis and Structural Characterization of Heterocyclic Thiocarbene, Selenocarbene, Thione, and Selenone Complexes of Tungsten Pentacarbonyl or Chromium Pentacarbonyl.
Authors: RAUBENHEIMER H. G. , KRUGER G. J. , MARAIS C. F. , OTTE R. , HATTINGH J. T. Z.
Published: May 2016

The nature of the electrophile (S or Se) added to (I) as well as the temp. of reaction determines whether carbene complexes or thione and selenone complexes are formed.
ChemInform Abstract: Synthesis and Structural Characterization of a Homologous Series of Divalent‐Metal Phosphonates, M(II)(O3PR)·H2O and M(II)(HO3PR)2.
Authors: CAO G. , LEE H. , LYNCH V. M. , MALLOUK T. E.
Published: May 2016

Layered phosphonate salts of divalent metal ions (Mg, Mn, Zn, Ca, Cd) are precipitated by combining aqueous solutions of a phosphonic acid and a soluble metal salt.
ChemInform Abstract: Synthesis and Magnetic Properties of μ‐Organoimido‐Bridged Iron(III) Salicylaldimine Compounds. Structure of (μ‐p‐Tolylimido)bis((N,N′‐ethane‐1,2‐diylbis(salicylaldiminato))iron(III)) ((Fe(salen))2N(Tol)).
Authors: NICHOLS P. J. , FALLON G. D. , MURRAY K. S. , WEST B. O.
Published: May 2016

The reaction of the Fe(II) complexes (I) or (IV) with aryl azides in toluene results in elimination of N2 and formation of the title compounds (III) or (VI).
ChemInform Abstract: Synthesis, Redox Behavior, Magnetic Properties, and Crystal Structure of a Nickel(II)‐Semiquinone Adduct with an Unusually Strong Ferromagnetic Coupling.
Authors: BENELLI C. , DEI A. , GATTESCHI D. , PARDI L.
Published: May 2016

Air oxidation of basic solutions containing the Ni complex cation of the macrocyclic ligand d,l‐5,7,7,12,14,14‐hexamethyl‐1,4,8,11‐tetraazacyclotetradecane forms with the anion of 3,5‐di‐tert.‐butylsemiquinone a stable complex (I), isolated as ClO4, BPh4 or PF6 salt (no yields given).
ChemInform Abstract: Synthesis and Characterization of a Mixed Ligand Complex of Copper(I) with 2,9‐Dimethyl‐1,10‐phenanthroline and Cyanide.
Authors: OGURA T. , SHEMESH E. , SCOTT N. , PYRKA G. J. , FERNANDO Q.
Published: May 2016

CuCN reacts with cyanide and 2,9‐dimethyl‐1,10‐phenanthroline (N‐N) to form the mixed ligand complex isolated as its tetrabutylammonium salt (I) (no yield given).
ChemInform Abstract: Synthesis and Characterization of Oxoruthenium(IV) Complexes That Utilize a 2,2′‐Biquinoline Ligand.
Authors: KUBOW S. A. , MARMION M. E. , TAKEUCHI K. J.
Published: May 2016

The novel title complexes (V) are prepared by the reaction sequence outlined in the scheme.
ChemInform Abstract: A New Class of Binucleating Tetratertiaryphosphine Ligands. The Synthesis and Crystallographic Characterization of the Chiral Diastereomer of a Rhodium(I) Dimer: Rh2Cl2(CO)2(eLTTP) (eLTTP: (Et2PCH2CH2)(Ph)PCH2P(Ph)(CH2CH2PEt2)).
Authors: LANEMAN S. A. , FRONCZEK F. R. , STANLEY G. G.
Published: May 2016

The new ligands are prepared as a mixture of the chiral R,R‐ and S,S‐phosphines (III) and the meso‐compounds (IV).
ChemInform Abstract: Redox‐Coupled Linkage Isomerizations with η2‐Coordinated Anilines.
Authors: HARMAN W. D. , TAUBE H.
Published: May 2016

In solution, the complex (I) undergoes a linkage isomerization from its N‐bound form to one in which the metal center engages the aromatic ring (→ (II)).
ChemInform Abstract: Synthesis of the Tumorigenic 3,4‐Dihydrodiol Metabolites of Dibenz‐(a,j)anthracene and 7,14‐Dimethyldibenz(a,j)anthracene
Authors: HARVEY R. G. , CORTEZ C. , SAWYER T. W. , DIGIOVANNI J.
Published: May 2016

In order to estimate the carcinogenic activity of dibenzanthracene derivatives, the compounds (XI) and (XII) are prepared via the sequence as shown in the reaction scheme.
ChemInform Abstract: 1‐Phospha‐1,2‐butadiene ‐ 1‐Phospha‐1,2,3‐butatriene.
Authors: MAERKL G. + , HEROLD U.
Published: May 2016

The arylchlorophosphine (I) reacts with the lithium acetylides, derived from the propargyl silyl ethers (II), to form the 4‐siloxy‐1‐phospha‐1,2‐butadienes (III).
ChemInform Abstract: Trimethylplatinum‐Theophylline Hexamer: A Novel Pt6‐Heterocycle Containing Pt‐N and Pt‐O Bonds.
Authors: LORBERTH J. , EL‐ESSAWI M. , MASSA W. , LABIB L.
Published: May 2016

The title compound (III) is obtained according to the scheme and characterized by X‐ray structure analysis (space group R3, Z=18).
ChemInform Abstract: Na5SnSb3 (I) and K8SnSb4 (II), Two Novel Zintl Phases with Tetrahedral SnSb4 Building Blocks
Authors: EISENMANN B. , KLEIN J.
Published: May 2016

can be synthesized directly from the elements at 700 °C. (I), the first antimonidopolystannate(IV), crystallizes in the monoclinic system, space group P21/c, Z = 8 and (II) belongs to the cubic space group Fd3m, Z = 8. In (I) the SnSb4 tetrahedra are connected by common corners to form chains (vierereinfach‐chains) whereas (II) contains isolated tetrahedral SnSb48‐ units.
ChemInform Abstract: Crystal Structures of Octacyanomolybdates(IV). Part 1. Ag4(NH3)5Mo(CN)8·1.5 H2O.
Authors: MESKE W. , BABEL D.
Published: May 2016

The title molybdate(IV) is synthesized according to the scheme (no yield given).
ChemInform Abstract: Crystal Structure and Superstructure of URh1.6As1.9.
Authors: ZEMNI S. , VICAT J. , LAMBERT B. , MADAR R. , CHAUDOUET P. , SENATEUR J. P.
Published: May 2016

The new title compound is obtained during attempts to prepare UM2X2 compounds with M: Rh, Co and X: P, As (two‐step preparation: 1. U:Rh = 1:2, melting under argon; 2. addition of As, evacuated silica tube, 1000 K, 24 h).
ChemInform Abstract: Thermal Neutron Irradiation Experiments on 10BP Single‐Crystal Wafers.
Authors: KUMASHIRO Y. , KUDO K. , MATSUMOTO K. , OKADA Y. , KOSHIRO T.
Published: May 2016

The electrical properties of 10BP single crystals are measured (van der Pauw method) before and after thermal neutron irradiation.
ChemInform Abstract: Mass Spectrometric Investigations of NiTe2O5 and Ni2Te3O8 at High Temperatures.
Authors: LESAR A. , POPOVIC A. , MARSEL J.
Published: May 2016

Results obtained for the title compounds by the mass spectrometric Knudsen effusion method show that both substances evaporate incongruently according to the reactions shown in the scheme.
ChemInform Abstract: A Neutron Scattering Study of Hydrogen Adsorption on Platinum Catalysts
Authors: RENOUPREZ A. J. , JOBIC H.
Published: May 2016

is performed for Pt supported on silica or encaged in zeolite Y and for Raney Pt.
ChemInform Abstract: Selective Cross Diels‐Alder Reactions of 2‐(Phenylsulfonyl)‐1,3‐dienes.
Authors: CHOU T. S. , HUNG S. C.
Published: May 2016

The 2‐(phenylsulfonyl)butadienes (V), generated by thermolysis of the 3‐sulfonylsulfolenes (III) and (IV), are subjected to various Diels‐Alder cycloadditions.
ChemInform Abstract: ESR Studies of Nitrogen‐Centered Free Radicals. Part 32. Isolation and Characterization of Sulfonamidyl Radical Dimers.
Authors: MIURA Y. , OHNISHI T.
Published: May 2016

Radical induced dimerization of the sulfonamides (I) in the presence of di‐tert‐butyl diperoxooxalate yields the symmetrically substituted hydrazines (II).
ChemInform Abstract: The Chemistry of Organolead(IV) Tricarboxylates. Synthesis and Electrophilic Heteroarylation Reactions of 2‐ and 3‐Thienyl‐, and 2‐ and 3‐Furyl‐Lead Tricarboxylates.
Authors: PINHEY J. T. , ROCHE E. G.
Published: May 2016

The title compounds (III), (VII) and (XII) are prepared by the optimized procedures given in the scheme; each of them is then treated with the three dicarbonyl compounds (IV), (VIII) and (XIII) to give products such as (V), (IX) and (XIV).
ChemInform Abstract: Synthesis of a β‐Diketone from a Dithioacetal. A Model Study for the Synthesis of an Ionomycin Fragment.
Authors: SHELLY K. P. , WEILER L.
Published: May 2016

The anion of the dithioacetal (I) reacts with the epoxide (II) to give the product (III) which can be subsequently converted to the diketone (V) by oxidation (→ (IV)) and hydrolysis.
ChemInform Abstract: Studies on Cage Compounds. Part 2. Base‐Promoted Reaction of 5,6,7,8‐Tetrachloro‐5,8‐dimethoxymethano‐4a,5,8,8a‐tetrahydro‐1,4‐naphthoquinone Epoxide.
Authors: CHOU T.‐C. , CHUANG K.‐S. , LEE C.‐H.
Published: May 2016

Base‐promoted cleavage of the enedione epoxide (II), prepared by oxidation of the Diels‐Alder adduct (I), yields the bridged tetrahydronaphthoquinone (V) after O‐methylation.
ChemInform Abstract: Stereoselective Cyanohydrin Forming Reactions of Chiral α‐Amino Aldehydes.
Authors: REETZ M. T. , DREWES M. W. , HARMS K. , REIF W.
Published: May 2016

The chiral α‐aminoaldehydes (I) derived from the corresponding amino acids, are treated with trimethylsilyl cyanide (II) in the presence of various Lewis acids to form mixtures of the diastereomeric cyanohydrins (III) and (IV).
ChemInform Abstract: Aziridination of Alkenes Catalyzed by Porphyrinirons: Selection of Catalysts for Optimal Efficiency and Stereospecificity.
Authors: MAHY J. P. , BEDI G. , BATTIONI P. , MANSUY D.
Published: May 2016

The N‐tosylaziridination of various alkenes such as (I) or (V) by tosylimidoiodobenzene (II), a nitrogen analogue of iodosylbenzene, to give the aziridines (III), (VI) or (VII) is catalyzed by a variety of tetraphenylporphyriniron complexes.
ChemInform Abstract: Polymerization of Indole. Part 3. Two Indolylquinolines, an Indole Tetramer, and the Dihydro Derivative of the Indole Dimer.
Authors: ISHII H. , SAKURADA E. , MURAKAMI K. , TAKASE S. , TANAKA H.
Published: May 2016

The reaction of the trimer (I), obtained by treatment of indole with TosOH/benzene as described in the preceding paper, with ZnCl2/AcOH gives the indol‐3‐ylquinoline (II).
ChemInform Abstract: A New Synthesis of 2(1H)‐Pyridine Thiones and Pyridine Thiols.
Authors: DUNN A. D. , NORRIE R.
Published: May 2016

The thioethers (III), obtained from the chlorides (I) as shown, are treated with NaOMe/MeOH to give the thiones (IV).
ChemInform Abstract: Reaction of 2‐Phenyl‐2‐oxazolin‐5‐one with 3‐N‐Alkyl/Arylisatinimines: One‐Flask Synthesis of N‐Substituted 3‐Benzoylamino‐2‐oxo‐1,2‐dihydroquinoline‐4‐carboxamides.
Authors: TRIPATHY P. K. , JAIN A. , MUKERJEE A. K.
Published: May 2016

In order to prepare the azlactones (III), the reaction between the title compounds (I) and (II) is investigated.
ChemInform Abstract: Synthesis of Alkylindolizines from Pyrylium Salts.
Authors: DINCULESCU A. , BALABAN T.‐S. , BALABAN A. T.
Published: May 2016

The pyrylium perchlorates (I) react with the acetal (II), derived from aminoacetaldehyde, to form the pyridinium salts (III) which are transformed into the corresponding aldehydes (IV).
ChemInform Abstract: Preparation, Spectroscopic Properties, and Characterization of Novel Peroxo Complexes of Vanadium(V) and Molybdenum(VI) with Nicotinic Acid and Nicotinic Acid N‐Oxide.
Authors: DJORDJEVIC C. , PURYEAR B. C. , VULETIC N. , ABELT C. J. , SHEFFIELD S. J.
Published: May 2016

Nicotinic acid is stabilized in the ligand sphere of V(V) and Mo(VI) containing coordinated peroxo groups.
ChemInform Abstract: 1‐β‐Methylcarbapenem Intermediates. Part 2. Stereoselective Synthesis of (3S,4R)‐3‐((1R)‐1‐tert.‐Butyldimethylsilyloxyethyl)‐4‐((1R)‐3‐methoxycarbonyl‐1‐methyl‐2‐oxopropyl)azetidin‐2‐one and Its Related Chemistry.
Authors: ENDO M. , DROGHINI R.
Published: May 2016

The azetidinone (I) reacts with either the dianion of the ester (II) or with the bissilyl enol ether (IV) in the presence of metal salts (Lewis acids) to give the products (IIIa) and (IIIb).
ChemInform Abstract: Total Synthesis of 11‐Deoxydaunomycinone by a New Annulation Process.
Authors: GHERA E. , BEN‐DAVID Y.
Published: May 2016

The key step in the preparation of 11‐deoxyanthracyclinones such as (V) is the regioselective cyclocondensation of the (bromomethyl)sulfonylmethylnaphthaline (II) with the dialkoxycyclohexanone (III) to give the diastereomers (IV).
ChemInform Abstract: Total Synthesis of (+)‐Didemnenones A and B. Absolute Configurations of the Didemnenones.
Authors: FORSYTH C. J. , CLARDY J.
Published: May 2016

The absolute configurations at C‐2 and C‐6 of the title compounds (IXa) (didemnenone A) and (IXb) (didemnenone B), constituents of Trididemnum cf.
ChemInform Abstract: Characterization of Surface Layers in Ion‐Nitrided Titanium and Titanium Alloys
Authors: BADINI C. , GIANOGLIO C. , BACCI T. , TESI B.
Published: May 2016

is carried out by XRD, optical microscopy, and microhardness measurements.
ChemInform Abstract: Determining the Stability Constant of Copper(I) Halide Complexes from Kinetic Measurements.
Authors: SHARMA V. K. , MILLERO F. J.
Published: May 2016

The oxidation of Cu(I) with molecular oxygen is studied in NaX‐NaClO4 (X: Cl, Br, I) at 25 °C (ionic strength I = 1).
ChemInform Abstract: A Comparative Study of Role of Both Anionic and Cationic Dopants (Al3+ and PO3‐ 4) and Irradiation on the Solid Phase Thermal Decomposition of Barium Bromate.
Authors: BHATTA D. , JENA B. , MOHANTY S. R.
Published: May 2016

The influence of the dopants Al3+ and PO43‐ as well as 60Co γ‐irradiation on the decomposition isotherms of Ba(BrO3)2 at 553 K is investigated.
ChemInform Abstract: Ground Spin State Variability in (Fe4S4(SR)4)3‐. Synthetic Analogues of the Reduced Clusters in Ferredoxins and Other Iron‐Sulfur Proteins: Cases of Extreme Sensitivity of Electronic State and Structure to Extrinsic Factors.
Authors: CARNEY M. J. , PAPAEFTHYMIOU G. C. , SPARTALIAN K. , FRANKEL R. B. , HOLM R. H.
Published: May 2016

A detailed comparison is given of the magnetic susceptibility, magnetization, EPR, and Moessbauer spectroscopic features of pure S = 1/2 and 3/2 clusters that are synthetic analogues of native clusters.
ChemInform Abstract: Efficient Synthesis of Sterically Hindered Chiral Binaphthol Derivatives.
Authors: MARUOKA K. , ITOH T. , ARAKI Y. , SHIRASAKA T. , YAMAMOTO H.
Published: May 2016

The highly effective method for the preparation of the title compounds (IV) involves the intramolecular 1,3 rearrangement reaction of the bis‐silylethers (III) (obtained from the known compound (I) and the reagent (II)) with tBuLi.
ChemInform Abstract: Preparation of Functionalized trans‐Perhydroindans from Substituted Benzoic Acids: Reductive Alkylation ‐ Halolactonization ‐ Free Radical Cyclization.
Authors: CHUANG C.‐P. , GALLUCCI J. C. , HART D. J.
Published: May 2016

Reductive alkylation of the substituted benzoic acids (I) leads to the formation of the compounds (III) which are treated with iodine to yield the iodo lactones (IVa) and (IVb).
ChemInform Abstract: 1,2‐Derivatives of Acenaphthylene. Part 10. Composition and Structure of the Chlorodeoxygenation Product of 5,6‐Dibromoacenaphthylene‐1,2‐dione.
Authors: ANIKIN V. F. , GIL'EN KH.
Published: May 2016

Treatment of 5,6‐dibromoacenaphthylene‐1,2‐dione (I) with PCl5 affords the dichloro derivative (II) instead of the tetrachloro derivative (IV) reported earlier.
ChemInform Abstract: On the Synthesis of 4‐Alkoxy‐2(5H)‐furanones.
Authors: ZIMMER H. , AMER A. , CHIEM VAN PHAM CHIEM VAN PHAM , SCHMIDT D. G.
Published: May 2016

The 4‐alkoxyfuranones (III) are prepared by reaction of tetronic acid (I) with the primary or secondary alcohols (II) in the presence of concentrated sulfuric acid.
ChemInform Abstract: Synthesis of 4‐(Phenylethynyl)‐2,6‐bis(N,N‐bis‐(carboxymethyl)aminomethyl)pyridine.
Authors: TAKALO H. , PASANEN P. , KANKARE J.
Published: May 2016

The synthesis of the title compound (XII) is accomplished starting from the tribromide (VIII) which, in turn, is accessible from the diester (VI).
ChemInform Abstract: Studies on 1‐Alkyl‐2(1H)‐pyridone Derivatives. Part 31. Syntheses of Isoquinoline Derivatives Using Diels‐Alder Reactions of 4‐Acetyl, 4‐Cyano, and 4‐Methoxycarbonyl‐1‐methyl‐2(1H)‐pyridones with 1,3‐Butadiene Derivatives.
Authors: TOMISAWA H. , FUJITA R. , KATO H. , HAYASAKA K. , KAMIMURA T. , HONGO H.
Published: May 2016

2‐Methylbutadiene (I) reacts with the pyridones (II) mentioned in the title to form the cycloadducts (III) and (IVa) ‐ (VIa).
ChemInform Abstract: Studies on as‐Triazine Derivatives. Part 12. Synthesis of Alkenyl‐1,2,4‐triazine Derivatives.
Authors: KONNO S. , SAGI M. , TAKAHARU E. , FUJIMURA S. , HAYASHI K. , YAMANAKA H.
Published: May 2016

The methyltriazines (I) are chlorinated to give the trichloromethyltriazines (II) which form the phosphoranes (IV) by reaction with triphenylphosphine (III).
ChemInform Abstract: Sesquiterpene Lactones from Flowers of Picris hieracioides L.
Authors: KANAYAMA T. , TADA M.
Published: May 2016

The new compounds hieracin I (I) and hieracin II (II) are isolated from the title species together with the known guaianolides jacquilenin (IIIa) and 8‐deoxylactucin (IIIb).
ChemInform Abstract: The Tunichromes. A Class of Reducing Blood Pigments from Sea Squirts: Isolation, Structures, and Vanadium Chemistry.
Authors: OLTZ E. M. , BRUENING R. C. , SMITH M. J. , KUSTIN K. , NAKANISHI K.
Published: May 2016

The structural elucidation of tunichromes from the vanadium‐sequestering tunicate Ascidia nigra An‐1 (Ia), An‐2 (Ib), and An‐3 (Ic), as well as two additional tunichromes from an iron‐sequestering tunicate, Molgula manhattensis, Mm‐1 (IIa) and Mm‐2 (IIb) is reported.
ChemInform Abstract: Identification of T‐Atom Vacancies in the Lattices of Zeolites.
Authors: KRAUSHAAR B. , DE HAAN J. W. , VAN DE VEN L. J. M. , VAN HOOFF J. H. C.
Published: May 2016

Silanol groups of zeolites ZSM‐5 and Y are silylated with Me3SiCl and the products are studied using 29Si (cross polarization) MAS NMR.
ChemInform Abstract: Formation of a Continuous Series of Solid Solutions in the System TiTe3O8‐ZrTe3O8.
Authors: YAMAGUCHI O. , OHTAGAKI T. , SHIMIZU K.
Published: May 2016

Samples of Ti1‐xZrxTe3O8 (0 ≤ x ≤ 1) are prepared by simultaneous hydrolysis of Ti(OPr)4, Zr(OBu)4, and TeCl4.
ChemInform Abstract: Imaging of n‐TiO2 by STM. Etching Effects on Photoelectrochemistry and Surface Structure.
Authors: GILBERT S. E. , KENNEDY J. H.
Published: May 2016

Scanning tunneling microscope imaging experiments and photoelectrochemical measurements are performed on highly polished single crystal n‐TiO2 before and after photoelectrochemical etching.
ChemInform Abstract: Thiobromo Complexes of Arsenic and Antimony. Preparation and Crystal Structures of (PPh4)2(As2SBr6)·CH2Br2 and (PPh4)2(Sb2SBr6)·CH2Br2.
Authors: SINNING H. , MUELLER U. +
Published: May 2016

In addition to the synthesis outlined in the scheme, (IVa) is also prepared by reaction of As2S3, (PPh4)I and HI in CH2Br2 (38% yield).
ChemInform Abstract: Preparation and Electronmicroscopic Investigation of Monoclinic (Zn,Nb)12O29 and (Mg,Nb)12O29.
Authors: KRUMEICH F. , GRUEHN R.
Published: May 2016

The conditions for the chemical transport of M2/3Nb11 1/3O29 (M: Zn, Mg) (I) are investigated using different chlorinating transportation agents (Cl2, NbCl5/Cl2, HCl, NH4Cl, HgCl2; 1000 °C → 900 °C).
ChemInform Abstract: Synthesis, Structure, and Magnetic Properties of μ‐2,2′‐Bipyrimidine‐N,N′,N′′,N′′′‐Copper(II) Complexes.
Authors: JULVE M. , DE MUNNO G. , BRUNO G. , VERDAGUER M.
Published: May 2016

The polynuclear title complexes (Ia), prepared analogous to the already known compound (Ib) from ethanolic solutions of the ligand and aqueous solutions of the Cu salts, are isostructural and crystallize in C2/m with Z=2.
ChemInform Abstract: (Co(NH3)6) (LAS)3 (LAS: Lasalocid A). A Second‐Sphere Complex Involving a Natural Carboxylic Ionophore.
Authors: TAKUSAGAWA F. , SHAW J. , EVERETT G. W.
Published: May 2016

The title complex crystallizes in the space group P21 with Z=2.
ChemInform Abstract: Approach to 7‐Ketoprostanoids via Isoxazolines.
Authors: LAKHVICH F. A. , KHRIPACH V. A. , ANTONEVICH I. P. , YANKOVA T. V. , KOROLEVA E. V. , AKHREM A. A.
Published: May 2016

The cyclopentenone (I) is coupled with nitrile oxides, prepared in situ from the ω‐nitroalkanoates (II), to give the bicyclic isoxazoles (III).
ChemInform Abstract: Three‐Component Reactions. Part 18. Alkoxy‐ and Acyloxychlorination of 1‐Methylcyclohexa‐1,4‐diene.
Authors: BEGER J. , VOGEL T.
Published: May 2016

The reactions between the three components 1‐methylcyclohexa‐1,4‐diene (I), the alkanols (II) or acetic acid (V), and Cl2 are investigated.
ChemInform Abstract: Bridgehead‐Coupled Bicyclo(1.1.1)pentanes: Synthesis and Structure.
Authors: BUNZ U. , POLBORN K. , WAGNER H.‐U. , SZEIMIES G.
Published: May 2016

The radical chain addition of the organic disulfide (II) to the propellane (I) leads to the "mono‐adduct" (III) as well as to the coupled dimeric, trimeric, and tetrameric bis‐thioethers (IVa), (IVb), (IVc) in yields depending on the (II):(I) ratio.
ChemInform Abstract: Huenig′s Base/Magnesium Chloride‐Mediated Carbon Alkylation and Oxygen Acylation of Benzoylacetonitrile.
Authors: MANSOUR T. S.
Published: May 2016

Benzoylacetonitrile (I) is coupled with the α‐halocarbonyl compounds (II) in the presence of Huenig's base and magnesium chloride to form the β‐cyano‐1,4‐dicarbonyl derivatives (III).
ChemInform Abstract: Synthesis and Characteristics of Fluorinated Benzofurans.
Authors: KUCKLAENDER U. + , HERWEG‐WAHL U. , POLL W. , RICKERICH L.
Published: May 2016

The structures of the title compounds (V) and (VII) are assigned by analogy with that of (Va) (space group P1 with Z=2).
ChemInform Abstract: 3‐Methylenetetrahydrofurans and 3‐Methylenepyrrolidines by Addition of 2‐Bromozincmethyl‐2‐propenyl Ethers to Aldehydes, Ketones, and Imines Followed by Pd(0)‐Catalyzed Cyclization.
Authors: VAN DER LOUW J. , VAN DER BAAN J. L. , STICHTER H. , OUT G. J. J. , BICKELHAUPT F. , KLUMPP G. W.
Published: May 2016

The 2‐(benzyloxymethyl)allylzinc bromide (I) reacts with the aldehyde (IIa) or the ketones (IIb) ‐ (IId) under insertion, forming the alkoxyzinc bromides (III) which undergo Pd‐catalyzed cyclization to give the methylenetetrahydrofurans (IV).
ChemInform Abstract: Synthesis of Carbazole by Catalytic Dehydrogenation of Cyclohexylamine.
Authors: TARASEVICH V. A. , STEFANOVICH O. A. , KOZLOV N. S.
Published: May 2016

The dehydrogenation of cyclohexylamine (I) to give carbazole (II) is studied in detail.
ChemInform Abstract: Electroorganic Chemistry. Part 112. A New Anodic C‐N Bond Forming Reaction Useful to Formation of Aziridine, Azetidine, and Pyrrolidine Rings.
Authors: SHONO T. , MATSUMURA Y. , KATOH S. , OHSHITA J.
Published: May 2016

The (tosylaminoalkyl)malonates (I) are electrochemically cyclized in the presence of iodide to form the saturated N‐heterocyclic dicarboxylates (II).
ChemInform Abstract: Pteridines. Part 87. Synthesis and Properties of 8‐Substituted 2‐Thiolumazines.
Authors: HUEBSCH W. + , PFLEIDERER W.
Published: May 2016

Various thioxo‐ and methylthiopteridinone derivatives (IV) or (VII) are synthesized by condensation of the pyrimidinones (II) or (VI) with dicarbonyl compounds (III).
ChemInform Abstract: Heterocyclic Systems Containing Bridgehead Nitrogen Atom: Synthesis of 2,3‐Dihydrothiazolo(3′,2′:2,3) (1,2,4)triazino(5,6‐b)indole, 4H‐2, 3‐Dihydro(1,3)thiazino(3′,2′:2,3) (1,2,4)triazino(5,6‐b)indole and Related Heterocycles.
Authors: MOHAN J. , ANJANEYULU G. S. R.
Published: May 2016

Condensation of the thione (II) with the dibromides (III) yields the title compounds of type (IV) and not the angular isomers (V).
ChemInform Abstract: Boron‐Nitrogen Compounds. Part 117. Pyrazaboles of the Type RR′B(μ‐pz)2BRR′ and Related Studies.
Authors: DAS M. K. , DEGRAFFENREID A. L. , EDWARDS K. D. , KOMOROWSKI L. , MARIATEGUI J. F. , MILLER B. W. , MOJESKY M. T. , NIEDENZU K.
Published: May 2016

Boron‐bonded hydrogen or organylthio groups of pyrazaboles such as (I) and (IV) can be replaced by reaction with either BF3·OEt2 (II) or BF3·HOMe as halogenating agents to give the products (III).
ChemInform Abstract: Five‐Coordinate Magnesium Complexes: Synthesis and Structure of Quadridentate Schiff Base Derivatives.
Authors: CORAZZA F. , FLORIANI C. , CHIESI‐VILLA A. , GUASTINI C. , CIURLI S.
Published: May 2016

Reaction of Mg(CH2‐Ph)2 in THF with Schiff base ligands affords the title complexes (I)‐(III).
ChemInform Abstract: Reactivity of Trimethylaluminum with (C5Me5)2Sm(THF)2: Synthesis, Structure, and Reactivity of the Samarium Methyl Complexes (C5Me5)2Sm((μ‐Me)AlMe2(μ‐Me))2Sm(C5Me5)2 and (C5Me5)2SmMe(THF).
Authors: EVANS W. J. , CHAMBERLAIN L. R. , ULIBARRI T. A. , ZILLER J. W.
Published: May 2016

The reaction of the Sm compound (I) with an excess of AlMe3 (II) yields the binuclear title complex (III).
ChemInform Abstract: Reactions of the (μ‐Hydrido)bis(μ‐dimethyl sulfide)bis(trichlorotungstate(III)) Ion and Trichlorotungsten(III)bis(μ‐dimethyl sulfide)(μ‐hydrido)(dimethyl sulfide)dichlorotungsten(III).
Authors: BOORMAN P. M. , MOYNIHAN K. J. , RICHARDSON J. F.
Published: May 2016

The reaction of (Ia) with benzyl chloride gives diamagnetic (III), which is moderately stable against air in the solid state.
ChemInform Abstract: Preparation and Structural Characterization of ((Cp(CO)2W)2(μ‐TolCC(OH)CTol)) (BF4)·CH2Cl2.
Authors: SHERIDAN J. B. , GARRETT K. , GEOFFROY G. L. , RHEINGOLD A. L.
Published: May 2016

The protonation of (I) at the carbonyl oxygen forms a new type of bridging hydrocarbyl ligand which formally donates 5 electrons to the ditungsten core.
ChemInform Abstract: Cooperative Effect in π‐Ligand‐Bridged Binuclear Complexes. Part 6. Cyclopentadienyl‐Bridged Binuclear Complexes, Me2Si((C5H4)M(CO)3)2 (M: W, Mo, Cr) and Me2Si((C5H4)M(CO)3Cl)2 (M: W, Mo): Synthesis and NMR‐Spectroscopic Characteristics.
Authors: HECK J. , KRIEBISCH K.‐A. , MELLINGHOFF H.
Published: May 2016

The cyclopentadienyl‐bridged binuclear complexes (III) can be prepared by reaction of the tris(propionitrile)tricarbonyls (I) with the dilithium salt (II) followed by oxidation with FeCl3 in an aprotic medium according to the scheme.
ChemInform Abstract: Organic Syntheses via Transition Metal Complexes. Part 31. N‐Benzylketenimine Complexes ‐ Metal Influence on Rearrangement and Addition Reactions.
Authors: AUMANN R. , HEINEN H.
Published: May 2016

N‐Benzylketenimine complexes such as (III) are obtained on addition of benzyl isocyanide (II) to the metal carbene complexes (I), (V), and also (OC)4Fe=C(OEt)‐Ph.
ChemInform Abstract: Heterolytic Cleavage of Cobalt‐Carbon Bond by Thiocyanogen in Benzyl Cobaloximes. Part 4.
Authors: GUPTA B. D. , KUMAR M.
Published: May 2016

The cobaloximes (Ia) react with (SCN)2 in CHCl3 at ambient temp. under dark and anaerobic conditions to give the corresponding compound (II) as the exclusive organic product.
ChemInform Abstract: Sulfur‐Nitrogen Bonded Metal Chelates. Part 17. Reactions of Alcohols with the Coordinated Nitrile in Nickel(II) Complexes (NiL(NCR)) (ClO4) (L: a S,N,N‐tridentate anion; R: Me, Et, or Ph) Under Different Conditions.
Authors: PAUL P. , NAG K.
Published: May 2016

Rate constants for the reactions of the title complexes with MeOH and EtOH are measured spectrophotometrically at 25 °C. Dry alcohol reacts with the nitrile complexes, as shown for (Ia), in the absence of free nitrile to give the methoxo‐bridged complex (IIIa), whereas the same reaction with wet MeOH yields (IIIb).
ChemInform Abstract: Chloroacetylation or Bromoacetylation on the Methine Carbon of an Asymmetrical Quadridentate Schiff Base Copper(II) Complex.
Authors: NAGAHARA T. , SUZUKI M. , KASUGA K.
Published: May 2016

The title reaction of the complex (I) can be carried out without a catalyst.
ChemInform Abstract: Electrical and Structural Properties of Chloro Complexes of Cobalt, Nickel, Copper and Zinc with 3‐(3‐Pyridyl)acrylic Acid.
Authors: ALLAN J. R. , PATON A. D. , TURVEY K. , BOWLEY H. J. , GERRARD D. L.
Published: May 2016

Magnetic measurements, electronic and IR spectra indicate that the title complexes (III) have octahedral structures with the ligand (II) bonded to the metal ions only through the N atoms in the aromatic ring system.
ChemInform Abstract: Mono‐ and Binuclear Four‐Membered Methanide Auracycles; Synthesis and Reactivity. X‐Ray Structure of cis‐(Au(C6F5)2(SPPh2O)(CH2PPh2Me)).
Authors: USON R. , LAGUNA A. , LAGUNA M. , LAZARO I. , JONES P. G. , FITTSCHEN C.
Published: May 2016

The starting Au(III) complexes (I) are prepared by 1:2 molar reaction of the chloride‐bridged dimer (AuCl(C6F5)2)2 with the corresponding phosphonium phosphine sulfide perchlorates.
ChemInform Abstract: Synthesis and Spectroscopic Properties of CpRuCl(R‐DAB(4e)) and CpRuCo(CO)3(R‐DAB(6e)). Part 17. X‐Ray Structure Determination of CpRuCo(CO)3(tBu‐DAB(6e)).
Authors: ZOET R. , VAN KOTEN G. , VAN DER PANNE A. L. J. , VERSLOOT P. , VRIEZE K. , STAM C. H.
Published: May 2016

The bis(phosphine)‐Ru complex (I) reacts with an excess of diazabutadienes (II) to give the title complexes (III) containing chelating diimines.
ChemInform Abstract: Rhodium Complexes with Tripodal Polyphosphines as Excellent Precursors to Systems for the Activation of H‐H and C‐H Bonds.
Authors: BIANCHINI C. , MASI D. , MELI A. , PERUZZINI M. , ZANOBINI F.
Published: May 2016

The trigonal‐bipyramidal Rh(I) complexes (I) are protonated by strong acids to give, after addition of NaBPh4, the octahedral cis‐chlorohydrido complexes (II).
ChemInform Abstract: Synthesis and Antitumor Activity of N‐Substituted Iminodiacetato(1,1‐bis(aminomethyl)cyclohexane)platinum(II) Complexes.
Authors: KHOKHAR A. R. , LUMETTA G. J. , DORAN S. L.
Published: May 2016

The water‐soluble title complexes (VI) are synthesized as shown and characterized by elemental analysis and IR spectral data.
ChemInform Abstract: Synthesis of Aminodiphenyl Ethers and Azo Dyes Derivatives.
Authors: URSEANU F. , BOZGA R. , NITULESCU D. N. , LUCHIAN A.
Published: May 2016

Ullmann condensation of the phenols (I) with p‐chloronitrobenzene (II), followed by Ni‐catalyzed hydrogenation of the nitrodiphenyl ethers (III) yields the aminodiphenyl ethers (IV).
ChemInform Abstract: Efficient Synthesis of Acyclic Nucleosides by N‐Alkylation of Pyrimidine and Purine‐Bases Using a New Coupling Agent of Cesium Iodide.
Authors: KIM Y. H. , KIM J. Y. , LEE C. H.
Published: May 2016

Pyrimidine bases such as (I) are activated by silylation and then coupled with the acetate (III) in the presence of cesium iodide to form acyclic nucleosides such as (IV).
ChemInform Abstract: Synthesis of Oxabicyclo(2.2.1)heptane Prostanoids Having Thromboxane‐Like Activity at Sub‐Nanomolar Concentrations.
Authors: WILSON N. H. , JONES R. L. , MARR C. G. , MUIR G.
Published: May 2016

The title prostanoids (IX)‐(XI) are examined for two types of thromboxane‐like agonist activity.
ChemInform Abstract: Silver Ions in Zeolite A Are Reduced by H2 Only at High Temperatures When 8‐Rings Are Blocked by Cesium Ions.
Authors: KIM Y. , SEFF K.
Published: May 2016

The structures of dehydrated Ag9Cs3‐zeolite A treated with H2 at different temp. are determined by single crystal XRD (cubic, space group Pm3m).
ChemInform Abstract: Heat Treatment of Highly‐Deformed Fe‐Ag Sheet Composites.
Authors: RATKE L.
Published: May 2016

Fe‐Ag composites obtained by means of deformation of powder mixtures are more stable against heat treatment compared to the pure components.
ChemInform Abstract: Pulse‐Plating of Au‐Cu‐Cd Alloys. Part 1. Experiments Under Controlled Mass Transport Conditions. Part 2. Theoretical Modelling of Alloy Composition.
Authors: RUFFONI A. , LANDOLT D.
Published: May 2016

Crack‐free deposits of Au‐Cu‐Cd alloys are obtained from an additive‐free cyanide electrolyte using pulse plating.
ChemInform Abstract: In situ Scanning Tunneling Microscopy of the Anodic Oxidation of Highly Oriented Pyrolytic Graphite Surfaces.
Authors: GEWIRTH A. A. , BARD A. J.
Published: May 2016

Prior to electrochemical cycling in 0.1 M H2SO4, the surface of highly oriented pyrolytic graphite appears atomically flat and atomic resolution is obtainable under potential control.
ChemInform Abstract: Catalytic Activity of γ‐Irradiated Transition Metal Ions in the Decomposition of Hydrogen Peroxide.
Authors: ARNIKAR H. J. , KAPADI A. H. , GOHAD A. S. , BHOSALE S. B.
Published: May 2016

The catalytic H2O2 decomposition by Fe2+, Fe3+, Co2+, and Cu2+ adsorbed on α‐Al2O3 is studied over the temp. range 295‐313 K. γ‐Irradiation of the catalysts at a dose of 0.12 MGy markedly enhances the first order decomposition rate.
ChemInform Abstract: Solvent Dependence of Absorption and Fluorescence Spectra of Piroxicam. A Possible Intramolecular Proton Transfer in the Excited State.
Authors: YOON M. , CHOI H. N. , KWON H. W. , PARK K. H.
Published: May 2016

The maximum absorption and emission wavelengths of piroxicam (I) strongly depend on the hydrogen‐bonding ability of the solvent.
ChemInform Abstract: Structure of the Products Formed by Oxidative Dehydrodimerization of 2,4‐Diaminoazobenzene Derivatives in a CuCl‐Pyridine System.
Authors: AMOSOV YU. I. , TERPUGOVA M. P. , KOTLYAREVSKII I. L.
Published: May 2016

Oxidation of the diaminoazobenzenes (I) with oxygen in the presence of cuprous chloride/pyridine yields mixtures of the triazolophenazones (II) and the triazolophenazines (III) which are also obtained from the aminobenzotriazoles (IV) at an elevated temperature.
ChemInform Abstract: Photooxidation of L‐Tyrosine, an Efficient 1,4‐Chirality Transfer Reaction.
Authors: ENDO K. , SEYA K. , HIKINO H.
Published: May 2016

Photolytic oxidation of L‐(‐)‐tyrosine (I) results in stereoselective formation of the bicyclic ketolactam (II).
ChemInform Abstract: Conjugate Additions of Grignard Reagents to α,β‐Unsaturated Ketones Mediated by Diamine Zinc(II) Monoalkoxides.
Authors: JANSEN J. F. G. A. , FERINGA B. L.
Published: May 2016

Cyclohexenone (I) is treated with the isopropylzinc compounds (II) of varying stoichiometric composition which form reactive complexes with tetramethylethylenediamine, to produce the 1,4‐adduct (III).
ChemInform Abstract: The Chemistry of Indoles. Part 45. A Convenient Synthetic Method of 2‐Substituted Indoles and Its Application for the Synthesis of Natural Alkaloid, Borrerine.
Authors: SOMEI M. , SAYAMA S. , NAKA K. , YAMADA F.
Published: May 2016

Reaction of 2‐bromo‐3‐indolecarboxaldehyde (I) with the tin reagents (II) gives the 2‐substituted indoles (III).
ChemInform Abstract: Reactions of Heterocyclic Enamides in the Series of Imidazolidine Nitroxides with Electrophilic and Nucleophilic Reagents.
Authors: REZNIKOV V. A. , VISHNIVETSKAYA L. A. , VOLODARSKII L. B.
Published: May 2016

The formylimidazolidine nitroxides (I) are coupled with the organo‐metal compounds (II) or (IV) to give the carbinols (III) or the cleavage products (V) and (VI).
ChemInform Abstract: Reaction of Arylarsonic Acids with Organylalkoxy‐ and Organylacetoxysilanes.
Authors: VORONKOV M. G. , BASENKO S. V. , GEBEL' I. A. , MIRSKOV R. G.
Published: May 2016

Phenylarsonic acid (I) reacts with the monoalkoxy(acetoxy)silanes (II) to give the silyl arsonates (III).
ChemInform Abstract: Unexpected Behaviour of Bifunctional Nucleophiles During the Synthesis of 5‐, 6‐, and 7‐Membered Heterocycles.
Authors: RIED W. , AKYUEZ A. +
Published: May 2016

The benzimidazole derivatives (I) and (VI) undergo cyclocondensation reaction with the N‐cyanoimidic acid derivatives (II) and (VII) to give the pyrimidobenzimidazoles (III) or the imidazopyrimidines (VIII).
ChemInform Abstract: Chemistry of gem‐Dihalocyclopropanes. Part 23. Reaction of Some gem‐Dibromocyclopropyl Acetals with Methyllithium.
Authors: SKATTEBOEL L. , STENSTROEM Y. , STJERNA M.‐B.
Published: May 2016

To study the intramolecular C‐H insertion of cyclopropylidenes, various gem‐dibromocyclopropane acetals such as (I), (IV) or (VIII) are treated with MeLi.
ChemInform Abstract: Selectivity in Cycloadditions of Nitrilimines to Geminal Dinitriles and α,β‐Disubstituted Acrylonitriles.
Authors: HASSANEEN H. M. , FARAG A. M. , ALGHARIB M. S. , SHAWALI A. S. , MEKKI M. S. T.
Published: May 2016

Under thermal reaction conditions, the nitrilimines (II) add regioselectively to the C=C double bond and not to the nitrile function of the acrylonitriles (III) to give the pyrazolines (IV); in the case of the dinitriles (V) subsequent HCN elimination is observed to give the pyrazoles (VI).
ChemInform Abstract: Studies on Thiazolidinones. Part 2. Synthesis and Fungitoxicities of Thiazolidinones, Thiohydantoins, and Their Derivatives Derived from Thiocarbohydrazide.
Authors: GARNAIK B. M. , BEHERA R. K.
Published: May 2016

Aromatic aldehydes such as benzaldehyde (I) react with thiocarbohydrazide (II) to give the bishydrazone (III).
ChemInform Abstract: Studies on Mannich Reaction of 1‐Benzyltetrahydroisoquinolines.
Authors: BHAKUNI D. S. , KUMAR P.
Published: May 2016

Mannich cyclization of the tetrahydroisoquinolines (I), (V), or (VII) yields p‐ and/or o‐cyclization products as shown in the reaction scheme.
ChemInform Abstract: Some Transformations of 2‐Methylene‐1,3‐diselenoles.
Authors: LAKSHMIKANTHAM M. V. , JACKSON Y. A. , CAVA M. P.
Published: May 2016

The benzylidene‐1,3‐diselenole (III) is converted into the nitroso (I) and phenylazo derivative (V).
ChemInform Abstract: Steroids. Part 40. 15‐(Hydroxymethyl)androstene and ‐estratriene Derivatives.
Authors: VINCZE I. , SOMLAI C. , SCHNEIDER G. , DOMBI G.
Published: May 2016

The reduction of the steroid (Ib) gives two isomers (III) and the seco derivative (IV).
ChemInform Abstract: X=Y‐ZH Systems as Potential 1,3‐Dipoles. Part 17. Sequential Michael Addition‐5‐endo‐trig Cyclization of Arylidene Imines of α‐Amino Acid Esters.
Authors: GRIGG R. , KEMP J. , MALONE J. F. , RAJVIROONGIT S. , TANGTHONGKUM A.
Published: May 2016

Regiospecific Michael addition between the amino acid ester imines (I) and methyl acrylate or acrylonitrile (II) yields the adducts (III), which are cyclized to give mixtures of the polysubstituted proline esters (IV)‐(VI).
ChemInform Abstract: A Novel Type of Selectivity in Anionotropic Rearrangements.
Authors: LUCCHINI V. , MODENA G. , PASQUATO L.
Published: May 2016

In contrast to adduct (III) which is stable even in SO2 as solvent, the stereomeric adduct (V) is slowly formed (about 1 h), converts within 24 h to decomposition products, and in SO2 instantaneously to the chloride (VIa) which then undergoes the slow rearrangement described for (VIb).
ChemInform Abstract: Reactivity of Phenyliodonium Bis(arylsulfonyl)methylides Toward Alkenes and Alkynes: Crystal Structure of 9‐Phenylsulfonyl‐1,2,3,4,4a,9a‐hexahydro‐1,4‐methanofluorene.
Authors: HATJIARAPOGLOU L. , VARVOGLIS A. , ALCOCK N. W. , PIKE G. A.
Published: May 2016

The title compound (III) generated from the iodobenzene (I) undergoes thermal decomposition via a novel rearrangement to yield the thiosulfonate (IV).
ChemInform Abstract: Synthesis, Structure, Electrochemistry, and Photophysics of Methyl‐Substituted Phenylpyridine Ortho‐Metalated Iridium(III) Complexes.
Authors: GARCES F. O. , KING K. A. , WATTS R. J.
Published: May 2016

The orthometalated dimeric Ir(III) complexes (III) and the cationic monomers (V) are obtained according to the scheme and characterized by 1H and 13C NMR data, UV/VIS absorption and emission spectra.
ChemInform Abstract: Novel Aldol‐Type Cyclocondensation of O‐Mesylcyanohydrins. Application of the Stereospecific Synthesis of Branched‐Chain Sugars.
Authors: CALVO‐MATEO A. , CAMARASA M.‐J. , DIAZ‐ORTIZ A. , DE LAS HERAS F. G.
Published: May 2016

The protected keto sugar (I) is converted into the cyanohydrin (III) which is isomerized upon treatment with a base, forming the cyanohydrin (IX).
ChemInform Abstract: Study by Extended X‐Ray Absorption Fine Structure Technique and Microscopy of the Amorphous State of Titanium Diboride Thin Films.
Authors: KALOYEROS A. E. , WILLIAMS W. S. , RIZK R. B. , BROWN F. C. , GREENE A. E.
Published: May 2016

The alternative approach of preparing TiB2 in the amorphous form is proposed, because a polycrystalline ceramic material which fails by cleavage and grain‐boundary fracture might be considerably more resistant to such failure in the amorphous state.
ChemInform Abstract: Moessbauer Spectroscopic Characterization of Iron Supported on Y Type Zeolites After Sulfiding.
Authors: HIDAKA S. , IINO A. , NITA K. , MORINAGA K. , YAMAZOE N.
Published: May 2016

At least three types of Fe3+ species are observed in NH4+‐Y samples impregnated with aqueous solutions of Fe3+ or Fe2+ after calcination.
ChemInform Abstract: Comparison of Metal‐Hydrogen, ‐Oxygen, ‐Nitrogen and ‐Carbon Bond Strengths and Evaluation of Functional Group Additivity Principles for Organoruthenium and Organoplatinum Compounds.
Authors: BRYNDZA H. E. , DOMAILLE P. J. , TAM W. , FONG L. K. , PACIELLO R. A. , BERCAW J. E.
Published: May 2016

The relative bond strengths for the complexes (I) and (II) are determined from equilibrium measurements.
ChemInform Abstract: New Method for the Facile Reduction of α‐Nitro Sulfones to Nitroalkanes via an Electron‐Transfer‐Hydrogen Atom Abstraction Mechanism.
Authors: CHEN J. , TANNER D. D.
Published: May 2016

Reduction of the α‐nitro sulfones (I) with 1,3‐dimethyl‐2‐phenylbenzimidazoline (II) in the presence of AIBN leads to the formation of the nitroalkanes (III).