bluuebunny/crossref_metadata_2025 huggingface dataset:
ChemInform Abstract: Reactive E=C(p‐p)π‐Systems. Part 22. Trifluoromethylselenocarbonylfluoride: Synthesis and Reactions with 1,3‐Dienes and Secondary Amines.
Authors: GROBE J. , LE VAN D. , WELZEL J.
Published: May 2016

The title compound (II), the thermolysis product from (I), is less inert than the related Se=CF2 and shows a strong dienophilicity.
ChemInform Abstract: N‐Functionalized Amino‐Aluminum and ‐Boron Complexes: Intramolecular Aromatic Nitrogen‐Assisted Formation of Aminoboranes.
Authors: ENGELHARDT L. M. , JACOBSEN G. E. , JUNK P. C. , RASTON C. L. , WHITE A. H.
Published: May 2016

Treatment of the heterocyclic bis(trimethylsilyl)amines (III) and (VIII) with boron trichloride (IV) results in the formation of the boron complexes (V), (VI), (IX), or (X).
ChemInform Abstract: Isolation and Characterization of Se‐Organolead Selenocarboxylates.
Authors: KATO S. , ISHIHARA H. , IBI K. , KAGEYAMA H. , MURAI T.
Published: May 2016

The monomeric Pb selenocarboxylates (III) and (V) (for (Vb) yields 78‐97%) are obtained as shown; (Vb) are prepared similarly from corresponding potassium benzeneselenocarboxylates.
ChemInform Abstract: (1‐Oxidoalkylidene)pentacarbonylchromium Anion (R(O‐)C=Cr(CO)5) ←→ Acylpentacarbonylchromate (Acyl‐Cr‐(CO)5) Chemistry: in situ Preparation and Reactions with Alkynes and Enynes.
Authors: HOYE T. R. , REHBERG G. M.
Published: May 2016

The in situ preparation of the title anions as the salts (III) followed by reaction with 1‐hexyne (IV) give the butenolides (V).
ChemInform Abstract: Interaction of Alkanes with Unsaturated Metal Centers. Part 2. Complexes of Alkanes and Fluoroalkanes with W(CO)5 in the Gas Phase.
Authors: BROWN C. E. , ISHIKAWA Y. , HACKETT P. A. , RAYNER D. M.
Published: May 2016

Time‐resolved IR spectroscopy is used to show that W(CO)5 forms reversible complexes with all the unsubstituted alkanes except CH4.
ChemInform Abstract: Heteropolymetallic Complexes of 1,1′‐Bis(diphenylphosphino)ferrocene (dppf). Part 5. Synthesis and Characterization of the Cationic Complexes (M(dppf)2)+ (M: Rh, Ir). Crystal and Molecular Structure of (Ir(dppf)2)B(C6H5)4.
Authors: CASELLATO U. , CORAIN B. , GRAZIANI R. , LONGATO B. , PILLONI G.
Published: May 2016

The Rh complex (IIIa) isolated in a pure yellow form, is formed via a red crude species; both the forms have identical 1H NMR spectra and are supposed to be dimorphic forms of the same compound.
ChemInform Abstract: Synthesis and Conversions of Co2(CO)6‐1‐(1‐Alkynyl)‐6,6‐dichlorobicyclo(3.1.0)hexanes and Their 6‐Oxa‐ and 6‐Azaheteroatomic Analogues.
Authors: DENISOV V. R. , LUPAEVA M. L. , ALEKSEEVA E. M. , SCHAUMANN E.
Published: May 2016

Addition of dichlorocarbene to the alkynylcyclopentenes (I) affords the rather unstable but isolable adducts (III).
ChemInform Abstract: Synthesis and Reactivity of Phenylethynyl‐Substituted Phosphenium Ion Complexes (R)(R′)P=MoCp′(CO)2; Preparation of Cluster Compounds Containing a 1‐Cobalta‐2‐phospha‐heteroallyl Building Block.
Authors: LANG H. , LEISE M. , ZSOLNAI L.
Published: May 2016

The title compounds (V) synthesized as shown contain a trigonal planar coordinated P atom which is part of a P‐Mo double bond system.
ChemInform Abstract: New Mixed‐Ligand Copper(II) Complex with Iminodiacetate and Imidazole: Bis(bis(imidazole)(iminodiacetato)copper(II)) Dihydrate.
Authors: NGUYEN‐HUY DUNG NGUYEN‐HUY DUNG , VIOSSAT B. , BUSNOT A. , SICILIA ZAFRA A. G. , GONZALEZ PEREZ J. M. , NICLOS GUTIERREZ J.
Published: May 2016

The title complex (I) (space group P1, Z=1) is obtained by 1:3 molar reaction of (iminodiacetato)diaquo‐Cu(II) with imidazole in methanol with ca. 70% yield.
ChemInform Abstract: Catecholate Spanning a Metal‐Carbon Double Bond. Synthesis and Crystal Structure of Cyclic Ru(=C(OC6H4O)(2‐N‐methylpyrrolyl))I(CO)(PPh3)2.
Authors: IRVINE G. J. , RICKARD C. E. F. , ROPER W. R. , WRIGHT L. J.
Published: May 2016

Catecholate displaces chloride from both the carbene center and the metal in the carbene‐Ru complex (I) to give the complex (III).
ChemInform Abstract: New Neutral and Cationic Methylpalladium(II) Complexes Containing Tridentate Nitrogen Ligands. Synthesis, Reactivity and X‐Ray Crystal Structure of (σ‐N‐2‐(N‐isopropylcarbaldimino)‐6‐(N‐isopropylcarbaldimino)‐σ‐N′‐p# yridyl)(chloro)methylpalladium(II) and ((σ3‐N,N′,N′′‐2,2′:6′,2′′‐terpyridyl)methylpalladium(II)) Chloride Dihydrate.
Authors: RUELKE R. E. + , HAN I. M. , ELSEVIER C. J. , VRIEZE K. , VAN LEEUWEN P. W. N. M. , ROOBEEK C. F. , ZOUTBERG M. C. , WANG Y. F. , STAM C. H.
Published: May 2016

The title compounds (III) (space group P1, Z=2) and (IV) (yield 96%; P21/a, Z=4) are prepared by equimolar reaction of the ligand (I) or terpyridyl with the Pd(II) complex (II).
ChemInform Abstract: Intramolecular Condensation of Steroidal 17α‐Formyl‐17β‐acetates: Synthesis of 14‐Hydroxymethyl‐3‐oxo‐19‐nor‐17α‐pregn‐4‐ene‐21,17‐carbolactone.
Authors: BULL J. R. , STEER L. M.
Published: May 2016

The steroidal α‐acetoxy aldehyde (I) is cyclized upon treatment with lithium 2,2,6,6‐dimethylpiperidide to form the hydroxy‐γ‐lactone (II).
ChemInform Abstract: Synthesis of Cyclopropanated and Branched‐Chain Pyranosides via Carbohydrate Triflates.
Authors: FATIMA A. , ZAMAN F. , SHEKHANI M. S. , MALIK A. , VOELTER W.
Published: May 2016

Approaches to cyclopropanated pyranosides of type (III) and branched‐chain epoxy sugar derivatives such as (V) by displacement of the triflate group with carbanions are described.
ChemInform Abstract: The Stereoselectivity of Michael Additions Leading to Enantiomerically Pure Indoloquinolizidones.
Authors: PENG S. , WINTERFELDT E.
Published: May 2016

The carboline derivatives (I) and (IV) (synthesis described in the preceding communication) are easily acylated by diketene (II).
ChemInform Abstract: Preparation of Modified Nucleosides from Glucosamine: Rapid and Efficient Formal Total Synthesis of Several 2′‐Deoxy C‐Nucleosides.
Authors: JUNG M. E. , TRIFUNOVICH I. D. , GARDINER J. M. , CLEVENGER G. L.
Published: May 2016

The trisbenzoyloxy sugar nitriles (V), prepared from D‐glucosamine hydrochloride (I), undergo elimination reaction upon treatment with DBU, forming the unsaturated nitriles (VI).
ChemInform Abstract: Na5HfAs3, a New Zintl Compound With Two HfAs4‐Tetrahedra Sharing a Common Edge
Authors: ADAM A. , SCHUSTER H.‐U.
Published: May 2016

is obtained directly from the elements (Na:Hf:As = 5:1:3; 1. 650 °C, 2 h; 2. 800 °C, 1 h; 3. 600 °C, 15 h; Ta crucible).
ChemInform Abstract: Metal Catalysts. Part 44. Effect of Titanium in Reforming Catalysts.
Authors: ENGELS S. , LAUSCH H. , SCHWOKOWSKI R. , TURNIER S. , WEHNER U.
Published: May 2016

Ti‐modified reforming catalysts such as Pt/Al2O3, PtIr/Al2O3, and PtRe/Al2O3 are prepared by a wet impregnation method in the presence of a complexing agent, e.g. citric acid, which is found to improve the dispersion of the Ti component.
ChemInform Abstract: Tetrahalobis(diphosphine)dimolybdenum(II) Compounds: β Isomers with Seven‐Membered Rings.
Authors: COTTON F. A. , FALVELLO L. R. , ROOT D. R. , SMITH T. J. , VIDYASAGAR K.
Published: May 2016

The β‐isomer (I) of the title complexes is now obtained in crystalline form (P1, Z=4) using a slightly modified literature method.
ChemInform Abstract: A Comparison of the Reactions of Some Ethyl N‐Arylcarbamates with Those of the Corresponding Acetanilides. Part 2. Amidomethylation with N‐Hydoxymethylphthalimide.
Authors: ROSEVEAR J. , WILSHIRE J. F. K.
Published: May 2016

The reactions of some acetanilides such as (I) and the corresponding N‐arylcarbamates (V) with N‐hydroxymethylphthalimide (II) in conc.
ChemInform Abstract: Regio‐ and Stereoselective Synthesis of Allyltrimethylsilanes via Krief‐Reich Elimination in β‐Seleno‐γ‐silyl Alcohols.
Authors: SARKAR T. K. , GHOSH S. K. , SATAPATHI T. K.
Published: May 2016

The synthesis of E‐allyltrimethylsilanes such as (IV) by regio‐ and stereocontrolled pathways is descibed based on the preference for Krief‐Reich elimination over silicon‐controlled rearrangement in the β‐seleno‐γ‐silyl alcohols (III), readily available from selenoaldehydes such as (I).
ChemInform Abstract: Stereochemical Studies on the Preparation and Subsequent Reductive Cleavage of 1,2‐Dioxolanes. Application to the Synthesis of (.+‐.)‐Yashabushitriol.
Authors: FELDMAN K. S. , SIMPSON R. E.
Published: May 2016

Photooxygenation of the stereoisomeric cyclopropanes (I) and (IV) in the presence of diphenyl dichalcogenides yields the 1,2‐dioxolanes (II) and (III).
ChemInform Abstract: A Novel Probe for Free Radicals Featuring Epoxide Cleavage.
Authors: DICKINSON J. M. , MURPHY J. A. , PATTERSON C. W. , WOOSTER N. F.
Published: May 2016

It is shown that homolytic cleavage of the C‐Cl or C‐O bond adjacent to the epoxide such as in (I) and (VII) is characterized by the C‐C bond cleavage within the epoxide ring.
ChemInform Abstract: Improved Procedure for the Reduction of N‐Acyloxazolidinones.
Authors: PENNINGS T. D. , DJURIC S. W. , HAACK R. A. , KALISH V. J. , MIYASHIRO J. M. , ROWELL B. W. , YU S. S.
Published: May 2016

The chiral N‐acyloxazidinones (I) and (IV) are reductively cleaved with lithium borohydride to form the alcohols (II) or (V) and the optically active auxiliary (III).
ChemInform Abstract: Directive Effects in Hydroborations of 1‐(Trialkylsilyl)‐1,3‐diynes. Synthesis of Z‐Enynes and α‐Keto Acetylenes.
Authors: STRACKER E. C. , LEONG W. , MILLER J. A. , SHOUP T. M. , ZWEIFEL G.
Published: May 2016

The 1,3‐diynes (I) react with the dialkylboranes (II) to give the enynes (III).
ChemInform Abstract: Amidrazones. Part 13. A Convenient Method for the Preparation of 1‐Alkyl‐1‐methylhydrazines.
Authors: SMITH R. F. , BROPHY K. A. , RODRIGUEZ G. , DENNIS L. A. , RYAN W. J.
Published: May 2016

Coupling of methylhydrazine (I) with acrylonitrile (II) and subsequent ring closure of the intermediate cyanoethylhydrazine generates the 3‐amino‐1‐methylpyrroline (III) which is directly alkylated with the halides (IV).
ChemInform Abstract: Cyclic Sulfates: Useful Substrates for Selective Nucleophilic Substitution.
Authors: BERRIDGE M. S. , FRANCESCHINI M. P. , ROSENFELD E. , TEWSON T. J.
Published: May 2016

Cyclization of the diols (I) with thionyl chloride (II) and subsequent oxidation affords the cyclic sulfates (IV) which are cleaved with the nucleophiles (V), producing the isomeric phenoxyalkyl or fluoroalkyl sulfates (VI) and (VII).
ChemInform Abstract: Facile Synthesis of β‐Trifluoroacetyl Ketene O,N‐, S,N‐, and N,N‐Acetals.
Authors: HOJO M. , MASUDA R. , OKADA E. , YAMAMOTO H. , MORIMOTO K. , OKADA K.
Published: May 2016

The O,O‐ or S,S‐acetals (II) of trifluoroacetyl ketene react with the amines (I) to form the corresponding O,N‐ and S,N‐derivatives (III).
ChemInform Abstract: Selective Synthesis of Glutaric Acids from Olefines.
Authors: DEPRES J.‐P. , GREENE A. E.
Published: May 2016

1‐Decene (I) reacts with dichloro ketene (II) to form the dichlorocyclobutanone (III).
ChemInform Abstract: Enantioselective Routes to 2,5‐Disubstituted and 4‐Substituted 2‐Cyclohexenones.
Authors: ASAOKA M. , AIDA T. , SONODA S. , TAKEI H.
Published: May 2016

The silylcyclohexenone (±)‐(I) is converted to the 3,6‐disubstituted silyl enol ethers (±)‐(VI) which are directly hydrolyzed and then oxidatively desilylated to form the cyclohexenones (±)‐(VIII).
ChemInform Abstract: Synthesis of Hydroxyquinones and Related Compounds: Semisquaric Acids, (.+‐.)‐Terreic Acid, (.+‐.)‐Perezone, and (.+‐.)‐Isoperezone.
Authors: ENHSEN A. , KARABELAS K. , HEERDING J. M. , MOORE H. W.
Published: May 2016

The cyclobutenedione (I) reacts with the alkyllithium agents (II) to produce the corresponding alkyl derivatives (III).
ChemInform Abstract: Synthesis of 3‐Butylidene‐7‐hydroxyphthalide.
Authors: MALI R. S. , PATIL S. R.
Published: May 2016

2‐Formyl‐6‐methoxybenzoic acid (I) is subjected to Wittig olefination with the phosphonium bromide (II), producing an E/Z‐mixture of the pentenylbenzoic acid (III).
ChemInform Abstract: An Efficient One‐Pot Synthesis of Fluorene‐9‐spiro‐3′‐pyrrolidines.
Authors: POPANDOVA‐YAMBOLIEVA K. , IVANOV C.
Published: May 2016

Under phase‐transfer catalysis, the reaction between benzylidenebenzylamine (I) and the arylidenefluorenes (II) proceeds regio‐ and stereospecifically at the exocyclic double bond of the arylidene derivatives (II) to give the title compounds (III) in high yields.
ChemInform Abstract: Synthesis of Benzimidazole Derivatives as Potential Antimicrobial Agents.
Authors: HABIB N. S. , ABDEL‐HAMID S. , EL‐HAWASH M.
Published: May 2016

The carboxylic hydrazides (I) are coupled with the isothiocyanates (II) to prepare the corresponding thiosemicarbazides (III).
ChemInform Abstract: Novel Palladium(II)‐Mediated Reactions of N‐Hydroxy β‐Lactams.
Authors: ZERCHER C. K. , MILLER M. J.
Published: May 2016

The 2‐furylacrylic acid (I) is coupled with the malonate to give the β‐keto ester (III) which is reduced, yielding the hydroxy ester (IV).
ChemInform Abstract: Reduction of o‐Hydroxybenzaldehydes by Aqueous Titanium Trichloride. A New Route to 2‐(Benzofuran‐2‐yl)phenols.
Authors: CLERICI A. , PORTA O. , ARNONE A.
Published: May 2016

The o‐hydroxybenzaldehydes (I) are reductively dimerized upon treatment with TiCl3 to yield the title compounds (II) as the main products.
ChemInform Abstract: Aromatic Annulation with Naphtho(1,8‐de)‐1,3‐dithiin Carbocations.
Authors: GAMAGE S. A. , SMITH R. A. J.
Published: May 2016

The title cations which are generated by the reaction of dithiins, e.g. (IV), with AgO‐SO2‐CF3 are excellent synthons for the creation of six‐membered rings.
ChemInform Abstract: Cyclopropanes from Silyl/Sulfur‐Stabilized Carbanions and Oxiranes. The Interplay of Two Reaction Pathways.
Authors: SCHAUMANN E. , FRIESE C.
Published: May 2016

The α‐silyl α‐sulfenyl carbanion salts (I) react with the oxiranes (II) to give the cyclopropanes (III).
ChemInform Abstract: Studies on Uracil Derivatives and Analogues. Part 12. Synthesis of 2,4‐Dimethoxy‐5‐(3‐oxo‐1‐alkynyl)pyrimidines, 2,4‐Dimethoxy‐5‐(3‐oxoalkyl)pyrimidines, and 5‐(3‐Oxoalkyl)uracils by a Highly Convenient Procedure.
Authors: KUNDU N. G. , DAS B. , MAJUMDAR A.
Published: May 2016

The ethynylpyrimidine (I) is converted via an ethynylboron intermediate to the oxoalkynyl derivatives (III).
ChemInform Abstract: Reactions of Organic Anions. Part 168. Reactions of 2‐(Dialkylamino)arylacetonitriles with Acetylenes Under Basic Conditions. A Simple Synthesis of Substituted Mono and Diketones.
Authors: ZDROJEWSKI T. , JONCZYK A.
Published: May 2016

The phase‐transfer catalyzed addition reaction of the aminoarylacetonitriles (II) with the acetylenes (I) in an equimolar ratio yields the vinylaminonitriles (III).
ChemInform Abstract: Chemistry of Boron. Part 202. Borylation of Amino Acids by an Amino‐imino‐borane.
Authors: GEISBERGER G. , NOETH H. +
Published: May 2016

Reactions of the amino‐iminoborane (II) with amino acid esters e.g. (I) or N,N‐dimethylamino acids e.g. (IV) lead to N‐borylated products (III) and boryl esters (V), respectively.
ChemInform Abstract: Boron Compounds. Part 93. Organosubstituted 1,6‐Dioxa‐2‐sila‐5‐bora‐3‐cycloalkenes ‐ Preparation and Characterization.
Authors: KOESTER R. + , SEIDEL G. , BOESE R. , WRACKMEYER B.
Published: May 2016

The 1:2 molar reaction of the 1,2,5‐azasilaborole (I) with the monohydroxy compounds (II) gives the cis‐alkenes (III).
ChemInform Abstract: Solvolytic Acceleration Accompanying (Trimethylsilyl)methyl Migration.
Authors: COOPE J. , SHINER V. J. JUN. , ENSINGER M. W.
Published: May 2016

The solvolysis of (I) is accelerated by the factor 4600 by the γ‐silyl substituent.
ChemInform Abstract: An Example of Cheletropic Reactivity of a Methylene Phosphane.
Authors: GRUETZMACHER H. + , PRITZKOW H. , STEPHAN M.
Published: May 2016

In the reaction of the 2‐phosphonio‐1‐phospha‐1‐alkene (I) with chloro‐orthobenzoquinone (II) the (4 + 1) cycloaddition product (III) (space group P21; Z=2) is obtained.
ChemInform Abstract: Synthesis and Structure of the Seleniumamide Complex SeCl2(N=PPh2N=S(O)Me2)2.
Authors: SCHRUMPF F. , ROESKY H. W. , NOLTEMEYER M.
Published: May 2016

The title complex (III) crystallizes in P1 with Z=2.
ChemInform Abstract: A Facile Preparation of O‐Alkyl Selenocarboxylates and Selenoamides via Se‐Alkynyl Selenocarboxylates.
Authors: ISHIHARA H. , YOSHIMI M. , HARA N. , ANDO H. , KATO S.
Published: May 2016

The Se‐alkynyl selenocarboxylates (I), readily obtained from the reaction of lithium alkyneselenolates with acetyl chloride, react with alcohols and amines such as (II) or (IV) to give the title compounds (III) or (V).
ChemInform Abstract: Complexes Containing a C2 Bridge Between an Electron‐Rich Metal and an Electron‐Deficient Metal. An Agostic Interaction in a RuCH2CH2Zr Moiety.
Authors: BULLOCK R. M. , LEMKE F. R. , SZALDA D. J.
Published: May 2016

The compounds (III) and (V) (space group P21/n, Z=4), which contain CH=CH and CH2CH2 bridges between an electron‐rich Ru fragment and an electron‐deficient Zr moiety, show unusual structural features.
ChemInform Abstract: An Alternative Synthesis of N5‐Acetyl‐N5‐hydroxy‐L‐ornithine from L‐Ornithine.
Authors: MILEWSKA M. J. , CHIMIAK A.
Published: May 2016

Oxidation of the N2‐protected L‐ornithine tert‐butylester (I) with dibenzoyl peroxide (II) and subsequent acetylation yield the N5‐acetyl‐N5‐oxybenzoyl derivative (IV).
ChemInform Abstract: A New and Efficient Synthesis of Enamido Dienes and Dienamido Olefins for Intramolecular Diels‐Alder Additions Leading to Hydroquinolones and Alkaloids.
Authors: CHOCKALINGAM K. , HARIRCHIAN B. , BAULD N. L.
Published: May 2016

N‐Methyl‐N‐vinylacetamide (I) is deprotonated and then substituted with the alkyl (IIa), (IIb), allyl (IIc), or dienyl halides (V) to yield the amides (III) or (VI) of higher carboxylic acids.
ChemInform Abstract: Synthesis of Bridged Dinucleosides.
Authors: AGATHOCLEOUS D. C. , PAGE P. C. B. , COSSTICK R. , GALPIN I. J. , MCLENNAN A. G. , PRESCOTT M.
Published: May 2016

The longer chain dinucleosides of type (III) are effective inhibitors of adenosine kinase.
ChemInform Abstract: Selective Chemically Assisted Ion Beam Etching of Si, Polysilicon, and SiO2 Using Ni‐Cr Masks and Cl2.
Authors: XIAO Z. , NILSSON B. , SVEDBERG P.
Published: May 2016

A chemically assisted ion beam etching process with Cl2 as the reactive gas is described and etch rates are measured for Si, polysilicon, SiO2, and Ni‐Cr etching as a function of ion beam current density, ion beam energy, and Cl2 flow rates.
ChemInform Abstract: Comparison of the Electronic Structures of Osmium‐Thionitrosyl and Osmium‐Nitrosyl Complexes
Authors: PANDEY K. K. , SHARMA R. B. , PANDIT P. K.
Published: May 2016

((Os(NX)Cl5)2‐ with X: S, O and (Os(NS)Cl4(H2O))‐) on the basis of CNDO/2 molecular orbital calculations shows that the Os‐NS bond strength is greater than that of the Os‐NO bond.
ChemInform Abstract: Copper(III) in the Complex Oxides MBa2Cu3O7‐y.
Authors: SHAPLYGIN I. S. , MISYAVICHUS A. K. , KONOVALOVA I. A. , LAZAREV V. B.
Published: May 2016

The title compounds MBa2Cu3O7‐y (M: Y, Nd, Eu, Gd, Ho; 0.15 ≦ y ≦ 0.43) are superconductors.
ChemInform Abstract: Reduction of Bi(III) from Highly Concentrated Perchloric Acid.
Authors: LOVRIC M. , KOMORSKY‐LOVRIC S. , BRANICA M.
Published: May 2016

It is shown that the electroactivity of Bi(III) ions can be substantially improved by reducing the activity of water in the supporting electrolyte.
ChemInform Abstract: Kinetics of Passivation of Lead in Phosphate Solutions
Authors: HEFNY M. M. , BADAWY W. A. , EL‐EGAMY S. S.
Published: May 2016

are studied as a function of pH and phosphate concentration by means of potentiometric and impedance measurements.
ChemInform Abstract: Photochemistry of Fluorochloroamines in Low‐Temperature Argon Matrices.
Authors: CONKLIN R. A. , GILBERT J. V.
Published: May 2016

The products of the photolysis of NFCl2 and NF2Cl in low‐temp.
ChemInform Abstract: Stabilization of Trivalent Nickel in Tetragonal NiS4N2 and NiN6 Environments: Synthesis, Structures, Redox Potentials, and Observations Related to (NiFe)‐Hydrogenases.
Authors: KRUEGER H.‐J. + , HOLM R. H.
Published: May 2016

The influence of ligand structure on Ni(III)/Ni(II) redox potentials is examined in order to elucidate those factors which lead to unusually low values for this couple, such as are found in (NiFe)‐hydrogenases.
ChemInform Abstract: Activation of 1‐Alkynes at Tripodal (Polyphosphine)rhodium Systems. Regioselective Synthesis of Enol Esters from 1‐Alkynes and Carboxylic Acids Catalyzed by Rhodium(I) Monohydrides.
Authors: BIANCHINI C. , MELI A. , PERUZZINI M. , ZANOBINI F. , BRUNEAU C. , DIXNEUF P. H.
Published: May 2016

Regioselective formation of 2‐(benzoyloxy)propene (III) results from the addition of benzoic acid (I) to propyne (II) in the presence of the trigonal‐bipyramidal Rh(I) monohydrides LRhH (L: E(CH2CH2PPh2)3, E: P, N).
ChemInform Abstract: Epimerization and Kinetic Protonation as Factors Determining the Stereochemistry of the Michael Reaction.
Authors: GOSPODOVA T. S. , STEFANOVSKY Y. N.
Published: May 2016

Model compounds such as (I), in which the only possibility for isomerization is epimerization, are synthesized and subjected to isomerization under the conditions widely used in the Michael addition.
ChemInform Abstract: Reactivity of 3,6‐Dimethoxy‐3,6‐dimethylcyclohexa‐1,4‐diene: Nuclear versus Benzylic Nucleophilic Substitution.
Authors: ALONSO F. , BARBA I. , YUS M.
Published: May 2016

The lithiation of the title compound (II) with lithium powder or lithium naphthalenide fails.
ChemInform Abstract: Reaction of Pyridine Derivatives with Butyl Glycidyl Ether as a Model System for Glycidyl Ether Modified Agarose: Structural Assignment by Selective INEPT Spectra.
Authors: GOGOLL A. , OSCARSSON S.
Published: May 2016

The reaction of the glycidyl ether (III) with the pyridine (II) leads to either (I) or (IV); compounds (V) and (VI) are formed analogously.
ChemInform Abstract: Asymmetric Diels‐Alder Reaction Catalyzed by Some Chiral Lewis Acids.
Authors: REBIERE F. , RIANT O. , KAGAN H. B.
Published: May 2016

Various chiral aluminum alcoholates are tested as catalysts in the Diels‐Alder reaction between cyclopentadiene (II) and dienophiles such as (III).
ChemInform Abstract: Facile Isomerization of Oxiranes to Allyl Alcohols by Mixed Metal Bases.
Authors: MORDINI A. , BEN RAYANA E. , MARGOT C. , SCHLOSSER M.
Published: May 2016

The mixture of LDA and KOtBu ("LIDAKOR reagent") promotes smooth ring opening of oxiranes such as (I), (III) or (V) to afford the allyl alcohols (II), (IV) and (VI)/(VII).
ChemInform Abstract: Mixed Metal Bases as Promoters of 1,4‐Eliminations.
Authors: MARGOT C. , MATSUDA H. , SCHLOSSER M.
Published: May 2016

When treated with a LDA/KOtBu mixture ("LIDAKOR reagent"), allyl type ethers such as (I) or (III) readily undergo 1,4‐elimination to give the conjugated dienes (II), (IV) or (V).
ChemInform Abstract: Hydrocarbonylating Cyclization of Dienes. Part 7. Cyclization of 1,4‐Dienes Containing Functionalized Side Chains at C‐3.
Authors: EILBRACHT P. , HUETTMANN G.‐E. +
Published: May 2016

It is shown that many functional groups in the C‐3 side chain of dienes such as (I) or (V) do not hamper the catalyzed hydrocarbonylative cyclization to cyclopentanones such as (III)/(IV) or (VI)/(VII), respectively.
ChemInform Abstract: Transition Metal Catalyzed Intramolecular Cyclizations of (Trichloromethyl)alkenes.
Authors: LEE G. M. , WEINREB S. M.
Published: May 2016

The alkenyl iodides (I) and the aldehydes (VII) are coupled with chloroform (II) to produce the trichloromethylalkenes (III) or the trichloromethyl ketones (VIII) (after Jones oxidation).
ChemInform Abstract: Reactions of 2‐Phenylethyl and 3‐Phenylpropyl Carbinols with Fluorosulfuric Acid.
Authors: BRIGHT S. T. , COXON J. M. , STEEL P. J.
Published: May 2016

The phenethyl carbinols (I), (V), (VII), and the phenylpropyl carbinols (VIII), (X), and (XIV) mentioned in the title are treated with fluorosulfuric acid in methylene chloride at ‐78°C to undergo cyclization as outlined in the reaction scheme, forming fused benzenes.
ChemInform Abstract: Facile Preparation of 2‐Iminotetrahydrofurans, Pyrans, and Oxepans.
Authors: ALANINE A. I. D. , FISHWICK C. W. G. , SZANTAY C. JUN.
Published: May 2016

The ω‐bromoalkyl amides (I) react with silver tetrafluoroborate (II) to give the cyclic iminium salts (III) which are neutralized with triethylamine to form the 2‐iminotetrahydrofurans, ‐pyrans, and ‐oxepans (IV).
ChemInform Abstract: Substituent Effect on the Claisen Rearrangement.
Authors: DESIMONI G. , FAITA G. , GAMBA A. , RIGHETTI P. P. , TACCONI G. , TOMA L.
Published: May 2016

The title rearrangement of the compounds (I), (III), (V) and (VII) is kinetically investigated.
ChemInform Abstract: Silicon‐Based Nucleophile‐Mediated One‐Carbon Ring Expansion Reaction of 1‐(Trimethylsilylmethyl)cycloalkanecarbaldehydes.
Authors: TANINO K. , SATO K. , KUWAJIMA I.
Published: May 2016

The 1‐trimethylsilylmethylcycloalkanecarbaldehydes (Ia), (Ib), and (Id) as well as the analogous ketones (Xa) and (Xc) react with the silyl thioether (II) in the presence of trimethylsilyl triflate or tin tetrachloride to give ring enlargement products as outlined in the reaction scheme.
ChemInform Abstract: A New Synthetic Approach to (+)‐Galantinic Acid, Degradation Product from the Peptide Antibiotic Galantin I, via 4‐Amino‐3‐hydroxypyranose.
Authors: KANO S. , YOKOMATSU T. , SHIBUYA S.
Published: May 2016

Photo‐induced allylation of the protected (phenylthio)oxazolidone (I) yields the allyl derivative (III) which is converted into N‐Boc galantinic acid methyl ester (IV).
ChemInform Abstract: Direct Polynitroaliphatic Alcohol Addition to Alkenes. Part 1. Synthesis of New 2‐Fluoro‐2,2‐dinitroethyl Acetals and Ethers.
Authors: COCHOY R. E. , MCGUIRE R. R. , SHACKELFORD S. A.
Published: May 2016

The reaction of the fluorodinitroethanol (II) with vinylic ethers such as (I) is catalyzed by mercury(I) or mercury(II) sulfate to give the acetals (III).
ChemInform Abstract: Dicobalt Hexacarbonyl Complexes of Conjugated Enynes as Equivalents of Tetradentate Synthons in the Preparation of Bicyclo(3.3.0)octane Derivatives.
Authors: GYBIN A. S. , SMIT V. A. , BERETENOV A. L. , SIMONYAN S. O. , SHASHKOV A. S. , STRUCHKOV YU. T. , KUZ'MINA L. G. , KEIPL R.
Published: May 2016

The dicobalt hexacarbonyl complexes (I) of conjugated enynes are coupled with alkenoyl tetrafluoroborates, generated in situ from the alkenoyl fluorides (II) and boron trifluoride, to give the alkenynone complexes (IV).
ChemInform Abstract: A Directed Metalation of N‐tert‐Butyl‐N‐methyl‐2‐methoxybenzamide. Short Syntheses of 2‐Methoxy‐6‐methylbenzoic Acid and Lunularic Acid.
Authors: REITZ D. B. , MASSEY S. M.
Published: May 2016

Ortho‐lithiation of the benzamide (I) mentioned in the title followed by reaction with the alkyl halides (II) yields the alkylation products (III).
ChemInform Abstract: Synthesis and Antifungal Activity of Bisphenolic Derivatives.
Authors: SUBRAMANIAM G. , SAVITHRI R. , THAMBIPILLAI S.
Published: May 2016

The bisphenols (I) are coupled with the carboxylic chlorides (II), chloroacetic acid (IV), and dimethyl sulfate (VI) respectively to synthesize the corresponding esters (III) or ethers (V) and (VII).
ChemInform Abstract: The Synthesis of Two Rigid Bichromophoric Systems in Which the Chromophores are Separated by Relays of Nine and Thirteen σ‐Bonds: Two Useful Models for Further Exploring the Distance Dependence of Long‐Range Intramolecular Electron Transfer.
Authors: OLIVER A. M. , PADDON‐ROW M. N.
Published: May 2016

The synthesis of the new members (III) of a series of rigid bichromophoric systems by successive coupling of 1,4‐naphthoquinone (I) with quadricyclane (II) units is described.
ChemInform Abstract: Synthesis of All Four Homochiral Stereoisomers of Methyl 3‐Phenyl‐1H‐aziridine‐2‐carboxylate.
Authors: THIJS L. , PORSKAMP J. J. M. , VAN LOON A. A. W. M. , DERKS M. P. W. , FEENSTRA R. W. , LEGTERS J. , ZWANENBURG B.
Published: May 2016

The title aziridines (VIII) and (XII) are interesting compounds due to their structural relationship to α‐ or β‐amino acids and their high reactivity.
ChemInform Abstract: Direct Preparation of Lanthanoid Ester Homoenolates from 3‐Halo Esters and Lanthanoid Metals: Their Homo‐Reformatsky‐Type Reaction with Carbonyl Compounds.
Authors: FUKUZAWA S. , SUMITOMO N. , FUJINAMI T. , SAKAI S.
Published: May 2016

The β‐halopropionates (I) are treated with the lanthanoid metals (II) to generate the reactive intermediates (III).
ChemInform Abstract: Synthesis of Methyl 4‐(2,2‐Dimethoxyethyl)‐6‐hydroxy‐7‐methoxyindole‐2‐carboxylate: A Potential Intermediate for the Synthesis of the Central and Right Parts of the Anticancer Antibiotic CC‐1065.
Authors: CASTEDO L. , MARCOS C. F. , RUIZ M. , TOJO G.
Published: May 2016

The bromobenzaldehyde (I), available from isovanillin, reacts with the phosphonium salt (II) in tetrahydrofuran to give the isomeric bromostyryl ethers (III) which are formylated, yielding the benzaldehydes (V).
ChemInform Abstract: A New Route to 1,2‐Dithiole‐3‐thiones (Trithiones) by the Reaction of Enaminones with Carbon Disulfide.
Authors: TOMINAGA Y. , NORISUE H. , KAMIO C. , MASUNARI T. , MIYASHIRO Y. , HOSOMI A.
Published: May 2016

Reaction of the cyclic enaminones (I), (VI), and (XI) with carbon disulfide (II) in the presence of a base results in cyclization to produce the fused dithiolethiones (III), (VII), and (XII).
ChemInform Abstract: Synthesis and Antimicrobial Activity of Some New Bis(2‐pyrazolin‐3‐yl)benzenes.
Authors: REDDY D. B. , SEENAIAH B. , ESWARAIAH S. , SESHAMMA T. , REDDY M. V. R.
Published: May 2016

Condensation of 1,3‐diacetylbenzene (I) with the benzaldehydes (II) produces the 1,3‐cinnamoylbenzenes (III) which react with hydrazine hydrate (IV) to form the 3,3'‐m‐phenylenebis(5‐aryl‐2‐pyrazolines) (V).
ChemInform Abstract: Fluorinated Analogues of the Imidazole Insect Growth Regulator KK‐42.
Authors: ARBONES C. , SANCHEZ F. J. , MARCO M.‐P. , CAMPS F. , MESSEGUER A.
Published: May 2016

Reaction of the aldehydes (I) with benzylamine (II) yields the isomeric imines (III) and (IV) which are cyclized with tosylmethyl isocyanide (V) to produce the imidazoles (VI) and (VII).
ChemInform Abstract: Synthesis of 3‐(4‐(4‐Oxothiazolidin‐2‐ylideneamino)phenyl)‐5,6‐dihydro‐5‐oxothiazolo(2,3‐c)‐1,2,4‐triazole and Its Dibenzylidene Derivatives.
Authors: GARNAIK B. K. , SAHU M. , BEHERA R. K. , NAYAK A.
Published: May 2016

Treatment of the hydrazide (I) with potassium thiocyanate (II) and subsequent base‐induced cyclization produce the triazole (III) which reacts with chloroacetic acid (IV) to give (V) containing two thiazole moieties.
ChemInform Abstract: A New Route to Spiroacetals and the Construction of a Model for the Synthesis of Phyllanthocin.
Authors: BIGGS K. R. , PARSONS P. J. , TAPOLZCAY D. J. , UNDERWOOD J. M.
Published: May 2016

The δ‐lactone (I) reacts with lithium acetylide (II) to give the keto alcohol (III) which is coupled with allyl alcohol (IV) to give the acetal (V).
ChemInform Abstract: X=Y‐ZH Systems as Potential 1,3‐Dipoles. Part 27. Intramolecular Cycloaddition Reactions of Imines of Cyclic Secondary α‐Amino Esters. Dipole and Cycloaddition Stereochemistry.
Authors: GRIGG R. , DUFFY L. M. , DORRITY M. J. R. , MALONE J. F. , RAJVIROONGIT S. , THORNTON‐PETT M.
Published: May 2016

The condensation of α‐amino esters, e.g. (II), (VII) and (X), with the aldehydes (I) and (IV) leads to the formation of azomethine ylides which undergo intramolecular 1,3‐dipolar cycloadditions to give the products shown in the scheme.
ChemInform Abstract: Novel Synthetic Route to Pyridine‐2(1H)‐thiones: Unexpected Products of the Reaction of β‐Phenethylidenemalononitriles with Arylmethylenecyanothioacetamides.
Authors: ELGEMEIE G. E. H.
Published: May 2016

Reaction of the β‐phenethylidenemalononitriles (I) with the arylmethylenecyanothioacetamides (II) in ethanol gives the intermediate trinitriles (III) which immediately cyclize under release of malononitrile to produce the 4,6‐diaryl‐2(1H)‐thioxo‐3‐pyridinecarbonitrile (IV).
ChemInform Abstract: 2‐Hydroxy‐1‐Substituted‐1,2,3,4‐tetrahydro‐β‐carbolines. The Pictet‐Spengler Reaction of N‐Hydroxytryptamine with Aldehydes.
Authors: HINO T. , HASEGAWA A. , LIU J.‐J. , NAKAGAWA M.
Published: May 2016

The nitrovinylindole (I) is consecutively reduced with NaBH4 and aluminum amalgam to produce N‐hydroxytryptamine (III).
ChemInform Abstract: Some Diazinon Analogues Containing the 4‐Trifluoromethyl Group.
Authors: GERSHON H. , CLARKE D. D. , GREFIG A. T. , ANDERSON T. E.
Published: May 2016

Five analogues (III) of the pesticide diazinon, containing a trifluoromethyl substituent in place of the methyl group, are prepared.
ChemInform Abstract: Free Radical Carboxymethylation of Uracils with Benzoyl Peroxide in Acetic Acid.
Authors: ITAHARA T. , IDE N.
Published: May 2016

The title carboxymethylation of the uracils (I) can be explained in terms of carboxymethyl radical formation from acetic acid (II).
ChemInform Abstract: Heterocycles from Carbohydrate Precursors. Synthesis of 3‐(L‐threo‐Glycero‐1‐yl)‐6,7‐dimethylpyrazolo(3,4‐b)quinoxalines.
Authors: AWAD L. , MOUSAAD A. , EL ASHRY E. S. H.
Published: May 2016

Oxidation of L‐ascorbic acid (I) gives dehydro‐L‐ascorbic acid which is directly coupled with 1,2‐diamino‐4,5‐dimethylbenzene (II).
ChemInform Abstract: Synthesis of (S,S)‐ and (R,R)‐2‐Alkyl‐2,5‐diazabicyclo(2.2.1)heptanes.
Authors: BRAISH T. F. , FOX D. E.
Published: May 2016

4‐Hydroxy‐L‐proline (I) is N‐tosylated and then reduced to give the diol (IV).
ChemInform Abstract: Synthesis and Characterization of Some 1,4,8,11,15,18,22,25‐Octaalkyl‐ and 1,4,8,11,15,18‐Hexaalkyl‐22,25‐bis(carboxypropyl)phthalocyanines.
Authors: MCKEOWN N. B. , CHAMBRIER I. , COOK M. J.
Published: May 2016

Ca. 15 members of the title compounds such as (V) are prepared on routes similar to that shown for (Va) starting from the furans (I) or the corresponding thiophene dioxides.
ChemInform Abstract: Synthesis and Properties of Dimethyltetradehydrothia‐(19)‐, ‐(21)‐, ‐(23)‐, and ‐(25)‐annulene. Diatropic and Paratropic Analogues of Thiophene.
Authors: OJIMA J. , NAGAYA M. , KATSUYAMA J. , YAMAMOTO G.
Published: May 2016

The components (II) + (Ia) + (Ib) are the starting compounds for the synthesis of the title annulene (IV)/(V) (= mixture of the "all‐trans" and "di‐cis" isomer).
ChemInform Abstract: Synthesis of Racemic Acetyl(tert.‐butyl)methylphenylsilane and Acetylmethylphenyl((trimethylsilyl)methyl)silane: Substrates for Stereoselective Microbial Reductions.
Authors: TACKE R. , FRITSCHE K. , TAFEL A. , WUTTKE F.
Published: May 2016

The racemic title compounds (VII) are prepared from (I) via (IV) by the two different three‐step syntheses shown in the scheme.
ChemInform Abstract: Experimental and Theoretical Study of the Dimetalation of Phenylacetylene and (1‐Naphthyl)acetylene.
Authors: KLUSENER P. A. A. , HANEKAMP J. C. , BRANDSMA L. , VON RAGUE SCHLEYER P.
Published: May 2016

The arylacetylenes (I) react with potassium tert‐butoxide (II) in the presence of BuLi to give the dimetalated intermediates (III) which are trapped with the chlorosilane (IV), forming the disilylation products (V).
ChemInform Abstract: Synthesis and Reactions of 2‐Pyridylphosphane, 2‐C5NH4‐PH2.
Authors: SPIEGEL G. U. , STELZER O.
Published: May 2016

The title compound (II) is a stronger PH acid than PH2Ph or PHPh2 as shown by H/D exchange experiments and acid/base exchange reactions between (II) and the Li salts of the two other phosphanes.
ChemInform Abstract: Insertion of Chloral into the P‐Br Bond of Phosphoranes.
Authors: MIRONOV V. F. , SINYASHINA T. N. , OFITSEROV E. N. , CHERNOV P. P. , KONOVALOVA I. V. , PUDOVIK A. N.
Published: May 2016

The tribromophosphorane (II), prepared in situ from the bromophosphite, is coupled with chloral (III) to give the tris(bromotrichloroethoxy)phosphorane (IV) via the mono‐ and bisadduct.
ChemInform Abstract: Synthesis and Reactivity of Dimethylindium Derivatives: Molecular and Electronic Structure of Bis(μ‐diethylamido)‐tetramethyldi‐indium(III).
Authors: ROSSETTO G. , AJO D. , BRIANESE N. , CASELLATO U. , OSSOLA F. , PORCHIA M. , VITTADINI A. , ZANELLA P. , GRAZIANI R.
Published: May 2016

The synthesized title compound (III) (space group P1, Z=1) is characterized by UV photoelectron spectra and X‐ray structure analysis.
ChemInform Abstract: Monocyclopentadienyl Lanthanoid(III) Complexes. The Synthesis and Crystallographic Characterization of the Organosamarium(III) Complex: (η5‐C5H5)SmCl(THF)2(μ‐Cl)2SmCl2(THF)3.
Authors: DEPAOLI G. , ZANONATO P. , VALLE G.
Published: May 2016

(IV) is obtained when a 0.6 ratio of (I) to (II) is used.
ChemInform Abstract: Reaction of Trimethylsilylethers of Unsaturated Alcohols with Schwartz Reagent ‐ Stabilization of Cyclic Zirconiumorganic Compounds by the Moiety Cp2ZrH2.
Authors: BUERGLEN B. + , UHLIG E.
Published: May 2016

Besides the normal products of hydrozirconation e.g. (IVa) and (Xa) the reaction of the allyltrimethylsilylethers (I), (VI), and (VIII) with Cp2Zr(H)Cl (II) yields, as a result of a hydrogenation of the Si‐O bond, Me3SiH and a series of compounds with Zr‐O bond.
ChemInform Abstract: A Primary Molybdosulfenamide.
Authors: NOBLE M. E.
Published: May 2016

The title compound (V) (overall yield 71%) is obtained via the Mo(V) dimer anion (III), which is generated in situ and has an established sulfur‐based reactivity.
ChemInform Abstract: Synthesis of (μ‐1,9,10,11‐η:4,5,6,12‐η‐Tricyclo(7.1.1.14,6)dodeca‐1(11),4,6(12),9# ‐tetraene)bis(tricarbonyliron): The Smallest Cyclophane with Metal‐Stabilized Antiaromatic Decks.
Authors: ADAMS C. M. , HOLT E. M.
Published: May 2016

The title compound (VI) crystallizes in the space group P21/a with Z=2.
ChemInform Abstract: Reactions of Cyclopentadienyl(phosphine)(α‐benzenesulfonylalkyl)nickel Complexes; Formation of Aldehydes and Alkenes from Sulfones.
Authors: JULIA M. , LAURON H. , VERPEAUX J.‐N.
Published: May 2016

Three reactions of the title complexes are investigated.
ChemInform Abstract: Complexes Containing Metallabis(dialkylphosphito) Units. Part 6. Synthesis and Complex‐Forming Properties of the Organometallic Chelating Ligand (C5Me5RhI(P(O)(OMe)2)2)‐.
Authors: VALDERRAMA M. , SCOTTI M. , CAMPOS P. , WERNER H. , MUELLER G. +
Published: May 2016

The title ligand is isolated as the 0.6 NaI adduct of its Na salt (IV).
ChemInform Abstract: 1,4‐Diene‐Derived (η3‐Allyl)palladium Complexes. Part 5. trans‐Bis(5‐acetoxy‐1,2,3‐η3‐cyclohexenyl)palladium Complexes by Palladium(II)‐Promoted Addition of Acetate to 1,4‐Cyclohexadienes.
Authors: SOEDERBERG B. C. + , AKERMARK B. , CHEN Y.‐H. , HALL S. S.
Published: May 2016

Cyclohexadienes such as (I) react with the acetic acid (II) in the presence of the palladium complex (III) to produce stereo‐ and regioselectively the corresponding cyclohexenylpalladium complexes (IV).
ChemInform Abstract: Synthesis and Antitumor Activity of Pt(II) Complexes of Benzyl‐1,2‐diaminoethane Ligands.
Authors: BRUNNER H. , HANKOFER P. , TREITTINGER B.
Published: May 2016

Benzyl‐substituted dichloro(1,2‐diaminoethane)platinum(II) and its derivatives substituted at the phenyl ring of the benzyl group have a high antitumor activity accompanied by a low toxicity compared to cis‐PtCl2(NH3)2 ("cis‐Pt").
ChemInform Abstract: Pigments of Fungi. Part 11. (+)‐Austrocorticin (Ia), Austrocorticinic Acid (IIa), Austrocorticone (IIIa), and Related Pigments: The First Naturally Occurring Anthraquinones Derived from a Propionate‐Triggered Octaketide.
Authors: GILL M. , GIMENEZ A.
Published: May 2016

The pigments (Ia), (II) and (III), which represent the first naturally occurring endocrocin‐type anthraquinones bearing a C2 side chain at C‐3, and the pigment (Ib), derived from a acetate‐triggered octaketide, are isolated from the orange fruit bodies of an Australian toadstool belonging to the genus Dermocybe.
ChemInform Abstract: Synthetic Study Towards the Tetracyclic Quassinoid Skeleton.
Authors: SHING T. K. M. , TANG Y.
Published: May 2016

The optically active tetracycle (X) is synthesized starting from the aldehyde (I) and (S)‐carvone (IV).
ChemInform Abstract: Preparation of Gibberellin Hapten‐Protein Conjugates. Part 1. Conjugation via Carboxymethylenation at C‐17.
Authors: BEALE M. H.
Published: May 2016

The preparation of C‐17 carboxylated derivatives of gibberellin A4 such as (V) and (VII) using anions of α‐trimethylsilylethanoic acid derivatives is investigated.
ChemInform Abstract: Absolute Configuration of Penlanfuran and Related Sesquiterpenoids of the Sponge Dysidea fragilis from the North‐Brittany Sea.
Authors: MANCINI I. , GUELLA G. , CAVAZZA M. , PIETRA F.
Published: May 2016

Comparison of natural noroxopenlanfuran with the compound (S)‐(+)‐(VIII) (yield given in g) shows that the natural terpene is the enantiomer (R)‐(‐)‐(VIII).
ChemInform Abstract: Efficient Regioselective A‐Ring Functionalization of Oestrogens.
Authors: PAGE P. C. B. , HUSSAIN F. , MAGGS J. L. , MORGAN P. , PARK B. K.
Published: May 2016

A complete series of 2‐halooestrogens are prepared with copper(II) or copper(I) salts in good yields, with copper(II) giving better yields than copper(I).
ChemInform Abstract: 1,4‐Dioxene(2,3‐dihydro‐1,4‐dioxine) in Organic Synthesis. Part 9. Preparation of Biologically Active Side‐Chains from 17‐Oxosteroids.
Authors: FETIZON M. , GOULAOUIC P. , HANNA I.
Published: May 2016

Steroidal 17α‐dioxenyl derivatives such as (III) are easily converted into 21‐hydroxy‐20‐oxo steroids such as the pregnenes (IV) or (VI) with or without a double bond at the 16 position.
ChemInform Abstract: Synthesis of Rigid, Heterocyclic Dipeptide Analogues.
Authors: KEMPF D. J. , CONDON S. L.
Published: May 2016

The indolecarbaldehyde (IV), prepared by esterification of the acid (I) and subsequent Vilsmeier formylation, is reductively coupled with the amino acid esters (V) to give the substituted aminomethylindoles (VI).
ChemInform Abstract: Synthesis of 5‐Thio‐D‐mannose.
Authors: YUASA H. , IZUKAWA Y. , HASHIMOTO H.
Published: May 2016

Methyl 2,3:5,6‐di‐O‐isopropylidene‐α‐D‐mannofuranoside (Ia) is converted to the suitable protected derivative (Ie) by standard procedures.
ChemInform Abstract: Reactivity of (3‐Chloro‐2‐methylenecycloalkyl)palladium Chloride Dimers: A Palladium Mediated Ring Homologation‐Functionalization Approach to the Ar‐7‐7 Skeleton of Colchicine.
Authors: DONALDSON W. A. , STEPUSZEK D. J. , GRUETZMACHER J. A.
Published: May 2016

The alkaloid colchicine is used as antimitotic agent and more recently it is undergoing preclinical trials as HIV inhibitor.
ChemInform Abstract: The Chemistry of Vicinal Tricarbonyl Compounds. Short Syntheses of Eudistomins T, I, and M.
Authors: WASSERMAN H. H. , KELLY T. A.
Published: May 2016

The phosphoranes (II) are coupled with the acid chlorides (I) and then ozonolyzed to produce the α,β‐diketo esters (IV).
ChemInform Abstract: Synthesis of 4‐Alkylsulfonyl‐5‐amino‐ and 5‐Amino‐4‐phosphono‐imidazole Nucleosides as Potential Inhibitors of Purine Biosynthesis.
Authors: BUCHANAN J. G. , MCCAIG A. E. , WIGHTMAN R. H.
Published: May 2016

Condensation of the silyl derivative of the imidazole (II) with the component (I) for a short time gives regioselectively the nucleoside (V) which is converted to the title compound (VI).
ChemInform Abstract: A New Synthesis of (9Z,12E)‐9,12‐Tetradecadien‐1‐yl Acetate.
Authors: SHARMA S. , SABHARWAL A. , DOGRA V. , VIG O. P. , KAD G. L.
Published: May 2016

The bromobutene (I) is coupled with the tetrahydrofuranyl chloride (II) by use of LiNH2 generated in situ to produce the alkynol (III).
ChemInform Abstract: Nitrile Oxides in Medicinal Chemistry. Part 2. Synthesis of the Two Enantiomers of Dihydromuscimol.
Authors: DE AMICI M. , DE MICHELI C. , MISANI V.
Published: May 2016

As exemplified in the scheme by (Ic) → (±)‐(VI), the racemic title compound (VI) can be prepared from bromonitrile oxide (generated in situ from (I)) and any of the dipolarophiles (II).
ChemInform Abstract: Characterization of Silicon Nitride Films Deposited on GaAs by RF Magnetron Cathodic Sputtering. Effects of Power Density and Total Gas Pressure
Authors: CARRIERE T. , AGIUS B. , VICKRIDGE I. , SIEJKA J. , ALNOT P.
Published: May 2016

on the film composition, stress, and critical electric field are studied.
ChemInform Abstract: Improvement of Dielectric Strength of Trench Capacitors by Using Rapidly Grown SiO2 Films.
Authors: ARAKAWA T. , FUKUDA H. , OKABE Y. , IWABUCHI T. , OHNO S.
Published: May 2016

Barrel‐shaped and tapered trenches are formed on p‐type Si wafers by reactive ion etching and ∼15 nm thick SiO2 films are grown on the trenched surfaces by rapid thermal oxidation at 1100 °C in a dry O2 ambient.
ChemInform Abstract: ZrSn0.5Ti0.5O4 as a Matrix for Ceramic Colors. Structural Investigations on ZrTiO4 and ZrSn0.5Ti0.5O4.
Authors: SIGGEL A. , JANSEN M.
Published: May 2016

The isotypic title compounds crystallize in the orthorhombic space group Pbcn with Z=2.
ChemInform Abstract: The Structure of In5Br7.
Authors: MARSH R. E. , MEYER G.
Published: May 2016

The crystal structure of In5Br7, previously described and refined in space group Cc, is found to be more correctly described in space group C2/c (revised lattice parameters are given).
ChemInform Abstract: Raman Spectra of Anion‐ and Cation‐Substituted Substituted Ternary Oxides of Molybdenum and Tungsten with the Pyrochlore or Hexagonal Tungsten Bronze Structures. Single Crystal Structure Analysis of CsZnMoO3F3 (I), Rb0.3Nb0.3W0.7O3 (II), and Rb0.3Ga0.1W0.9O3 (III).
Authors: MATTES R. , LEIMKUEHLER M. + , NAGEL A.
Published: May 2016

The Raman spectra of A(BxW1‐x)O3 (A: K, Rb, Cs; B: Mg, Al, Ga, Ti, V, Nb, Ta) with defect pyrochlore or hexagonal tungsten bronze (HTB) structure and of Cs(BMO3F3) (M: Mo, W; B: Ni, Cu, Zn) and AM2O5F (A: Rb, Cs; M: Nb, Ta) with defect pyrochlore structure are detected (synthesis conditions are given in a table).
ChemInform Abstract: A Kinetic Investigation of the Fe2+/Fe3+ Reaction in Frozen and Liquid HClO4·5.5 H2O
Authors: BORGERDING A. , BROST E. , SCHMICKLER W. , DINAN T. , STIMMING U.
Published: May 2016

is carried out at a Pt electrode at temp. in the range 130‐300 K. The exchange current density is found to follow an Arrhenius law in the liquid and in the solid state.
ChemInform Abstract: Temperature Dependence of the Uptake Coefficients of HNO3, HCl, and N2O5 by Water Droplets
Authors: VAN DOREN J. M. , WATSON L. R. , DAVIDOVITS P. , WORSNOP D. R. , ZAHNISER M. S. , KOLB C. E.
Published: May 2016

(200 μm diameter) is studied in a low‐pressure flow reactor over the range 268‐294 K. In all cases, the uptake coefficient increases with decreasing temperature.
ChemInform Abstract: The Structure of Na4(TiO4).
Authors: KISSEL J. , HOPPE R.
Published: May 2016

Single crystals of the title compound are obtained from the reaction of Na2O and TiO2 at 750 °C (52 d, Ni‐tube).
ChemInform Abstract: New Isotypes of CeNiSi2 in the Systems Ln‐M‐X (Ln: La‐Lu; M: Metals of Group 7‐11; X: Ge, Sn). Part 2. Interpretation of the Non‐Stoichiometry.
Authors: VENTURINI G. , FRANCOIS M. , MALAMAN B. , ROQUES B.
Published: May 2016

Based on XRD data reported in part 1 (see preceding abstract) for LnMxGe2 and LnMxSn2 (Ln: La‐Lu; M: Mn, Fe, Co, Ni, Cu, Ru, Rh, Pd, Re, Ir, Pt; 0 < x ≤ 1.0), the large variations in x are discussed.
ChemInform Abstract: Spectral Shifts in Acid‐Base Chemistry. Part 1. Van der Waals Contributions to Acceptor Numbers.
Authors: RIDDLE F. L. JUN. , FOWKES F. M.
Published: May 2016

It is the purpose to determine the van der Waals and acid‐base contributions to the overall 31P chemical shifts and to the acceptor numbers of the Mayer and Gutmann two‐component systems and to illustrate the method with experimental results for 30 test liquids.
ChemInform Abstract: Alkynes and Cumulenes. Part 21. Some New Oligomers of Allene.
Authors: HOPF H. , KRETSCHMER O. , ERNST L.
Published: May 2016

The thermal oligomerization of allene in the gas phase is reinvestigated.
ChemInform Abstract: Absolute Kinetics of Dichlorocarbene in Solution.
Authors: CHATEAUNEUF J. E. , JOHNSON R. P. , KIRCHHOFF M. M.
Published: May 2016

(I) proves to be a suitable source for the title carbene.
ChemInform Abstract: Oxidation of ω‐(Benzoyloxy)alkanols with an Oxoaminium Salt.
Authors: YAMAGUCHI M. , TAKATA T. , ENDO T.
Published: May 2016

The oxoaminium chloride (II), generated by oxidative chlorination of the tetramethylpiperidine‐1‐oxyl (I) either directly before the conversion or in situ, is employed in the oxidation of the hydroxyalkyl benzoates (III).