bluuebunny/crossref_metadata_2025 huggingface dataset:
ChemInform Abstract: Intramolecular Cycloadditions with Isobenzofurans. Part 8. Synthesis of Precursors via an Opp′e Reaction.
Authors: HILDEBRANDT K. , FRIEDRICHSEN W.
Published: May 2016

The cyclic nitrosamide (IV) reacts with the lithium salts (V) or (IX) of pentenols to give the unsaturated o‐diazomethylbenzoates (VI) or (X).
ChemInform Abstract: Formation of Fused Sulfur‐ and Nitrogen‐Containing Heterocycles from Allyl 2‐Pyridyl Sulfide and Sulfoxide.
Authors: LITVINOVA V. V. , SOLODOVNIKOV V. E. , ANISIMOV A. V. , VIKTOROVA E. A.
Published: May 2016

Thermal treatment of allyl 2‐pyridyl sulfide (I) gives the cyclic sulfides (II) and (III), the allyl allylpyridyl sulfide (IV), and the disulfides (V) ‐ (VII).
ChemInform Abstract: A Novel Ethynylation of Pyridines by Reissert‐Henze Type Reaction.
Authors: NISHIWAKI N. , MINAKATA S. , KOMATSU M. , OHSHIRO Y.
Published: May 2016

Pyridine 1‐oxide (I) is converted to the benzoyloxypyridinium salt (III) which is directly coupled with the phenylmetals (IV) or the organosilver compounds (VI) to produce the 1‐ethynylpyridines (V) or (VII).
ChemInform Abstract: Synthesis and Cyclization of 1‐Methyl‐4‐(3‐(4‐substituted‐phenylamino)propyn‐1‐yl)piperidin‐4‐ols.
Authors: ERZHANOV K. B. , KOLKHOSOVA S. S. , SADYKOV T.
Published: May 2016

In the presence of KOH the piperidone (I) adds to the arylaminopropynes (II) to afford the title compounds (III).
ChemInform Abstract: Generation and Cyclization of Nitrilium Ions from Amides.
Authors: GAWLEY R. E. , CHEMBURKAR S. R.
Published: May 2016

Treatment of the unsaturated carboxamides (I) with trimethylsilyl polyphosphate results in cyclization to give the benzylidenepyrrolines (II).
ChemInform Abstract: Carbonyl Ylide Formation from the Rhodium(II) Acetate‐Catalyzed Reaction of Keto α‐Diazoacetate Derivatives.
Authors: DEAN D. C. , KRUMPE K. E. , PADWA A.
Published: May 2016

The diazoacetate (I) undergoes insertion reaction with benzene (II) in the presence of Rh(II) acetate to give the cycloheptatriene (III).
ChemInform Abstract: Palladium Homogeneous and Supported Catalysis: Synthesis of Functional Acetylenics and Cyclization of Heterocycles.
Authors: VILLEMIN D. , GOUSSU D.
Published: May 2016

Pd(II)‐catalyzed coupling of the halobenzenes (I) with the alkynes (II) yields the arylacetylenes (III) which are subjected to ring closure under various conditions to give the heterocycles (IV) and (VI) ‐ (IX).
ChemInform Abstract: Ozonization of Thio‐ and Azauracils.
Authors: MATSUI M. , KAMIYA K. , KAWAMURA S. , SHIBATA K. , MURAMATSU H.
Published: May 2016

The reaction of the 2‐thiouracils (I) with ozone gives the 4(3H)‐pyrimidinones (III) as main products together with the corresponding uracils.
ChemInform Abstract: Diels‐Alder Reaction of Unactivated 2‐Aza‐1,3‐dienes with Diethyl Ketomalonate: A Carbon Dioxide Equivalent.
Authors: BARLUENGA J. , GONZALEZ F. J. , FUSTERO S.
Published: May 2016

The azadienes (I) react with diethyl ketomalonate (II) to form the hetero‐Diels‐Alder adducts (III).
ChemInform Abstract: Triethylgallium‐Mediated Lactamization of α,ω‐Amino Carboxylic Acids.
Authors: YAMAMOTO Y. , FURUTA T.
Published: May 2016

Cyclization of the ω‐amino carboxylic acids (I) in the presence of triethylgallium forms the monomeric (II) or dimeric lactams (III) depending on the chain length of (I) and the dilution of the reaction mixture.
ChemInform Abstract: Fluorine in Enzyme Chemistry. Part 2. The Preparation of Difluoromethylenephosphonate Analogues of Glycolytic Phosphates. Approaching an Isosteric and Isoelectronic Phosphate Mimic.
Authors: CHAMBERS R. D. , JAOUHARI R. , O'HAGAN D.
Published: May 2016

Starting from the allylphosphonate (I) the two difluoromethylenephosphonate analogues (VI) and (XII) of the glycolytic intermediates, glycerol‐3‐phosphate and 3‐phosphoglycerate, are synthesized according to the scheme.
ChemInform Abstract: Syntheses of closo‐1‐Methylphosphadodecaborane(12), B11H11PCH3, and nido‐7‐Methylphosphaundecaborane(13), B10H12PCH3, from the (B11H13)2‐ Anion and Their Molecular Structures.
Authors: GETMAN T. D. , DENG H.‐B. , HSU L.‐Y. , SHORE S. G.
Published: May 2016

With the recently reported synthesis of salts of B11H1‐4 from B5H9 and alkali metal hydrides and their following deprotonation, a relatively simple way and good source for the dianion (I) is obtained.
ChemInform Abstract: Preparation of Unsubstituted and Chlorine‐Carrying ((Trifluoromethyl)phenyl)phosphonic Acids by a Modified Doak‐Freedman Procedure.
Authors: KLUMPP E. , EIFERT G. , BOROS P. , SZULAGYI J. , TAMAS J. , CZIRA G.
Published: May 2016

CuCl as catalyst in the Doak‐Freedman procedure can be exchanged by different phase‐transfer catalysts.
ChemInform Abstract: The Optically Active Phosphinodithioates. Synthesis and Conversion to the Optically Active Phosphine Sulfides.
Authors: KAWASHIMA T. , KOJIMA S. , INAMOTO N.
Published: May 2016

Methylation of the phosphinothioates (I) gives the S‐methyl compounds (III) which are sulfurized to produce the optically active phosphinodithioates (IV).
ChemInform Abstract: Reactions of Bis(trimethylsilyl)isocyanamine and Its Isomers with Chlorotriphenylphosphonium Chloride: Evidence for a Transient Diazomethylenetriphenylphosphorane. Crystal Structure of Cyclic (Ph3PCNN(C(PPh3)2)NN)(PF6)2.
Authors: ZINNER G. , BECK G. , FEHLHAMMER W. P. , WIBERG N.
Published: May 2016

Reaction of bis(trimethylsilyl)isocyanamine (I) with triphenylphosphine (II) and hexachloroethane (III) (or with triphenylphosphine dichloride) leads to the formation of the tetrazole derivative (V), the crystal structure (investigated as the methylene chloride adduct) of which is determined (orthorhombic, space group Pbca).
ChemInform Abstract: The Use of 1‐Phosphanorbornadienes with Chiral Phosphorus at the Bridgehead in Catalytic Asymmetric Hydrogenation of Dehydro Amino Acids.
Authors: BREQUE A. , ALCARAZ J.‐M. , RICARD L. , MATHEY F. , TAMBUTE A. , MACAUDIERE P.
Published: May 2016

Diels‐Alder reaction of the phosphole (I) with the phenylpropiolates (II) yields a mixture of the regioisomeric 1‐phosphanorbornadienes (III) and (IV).
ChemInform Abstract: Nitration of 5,6‐Disubstituted Benzo‐2,1,3‐thia‐ and ‐selenadiazoles.
Authors: SERGEEV V. A. , PESIN V. G. , PAPIRNIK M. P.
Published: May 2016

Depending on the substituents present at the positions 5 and 6 of the title compounds (I), (IV) or (VI), their nitration effected by NaNO3 (II) according to method A) affords the 4,7‐dinitro derivative (III), the 4‐nitro derivative (V) or no product.
ChemInform Abstract: A Palladadigermetane: Palladium‐Catalyzed Insertion Reactions of Digermiranes.
Authors: TSUMURAYA T. , ANDO W.
Published: May 2016

The insertion reaction of (I) leads to the ring expansion product (IIIa).
ChemInform Abstract: 4,8‐Dichloroocta‐tert‐butyltetracyclo(3.3.0.02,7.03,6)octagermane.
Authors: SEKIGUCHI A. , NAITO H. , NAMEKI H. , EBATA K. , KABUTO C. , SAKURAI H.
Published: May 2016

Reductive cyclization of the digermane (I) or of tert‐butyltrichlorogermane (IV) with lithium naphthalenide produces the title compound (II) in a low yield, together with small amounts of the cyclopentagermane (III).
ChemInform Abstract: Reaction of Selected Methyltin(IV) and ‐germanium(IV) Halides in Anhydrous HF, HSO3F, and HSO3CF3.
Authors: MALLELA S. P. , TOMIC S. , LEE S. , KARUNANITHY S. , CARTER H. A. , SAMS J. R. , AUBKE F.
Published: May 2016

Acidolysis of tetramethylgermane (I) and trimethylchlorogermane (IV) in the sulfonic acids (II) yields the trimethylgermyl sulfonates (III) or the dimethylgermanediyl bissulfonate (V).
ChemInform Abstract: Preparation, Structure, and Chemistry of (O‐Acyl imidato)‐ and (O‐Alkyl imidato)carbene Pentacarbonyl Complexes of Chromium.
Authors: WULFF W. D. , DRAGISICH V. , HUFFMAN J. C. , KAESLER R. W. , YANG D. C.
Published: May 2016

The first examples of the insertion of organonitriles such as (II) into heteroatom‐stabilized Fischer carbene complexes (I) to give imidatocarbene complexes (III) are described.
ChemInform Abstract: Bidentate Alkene‐Aminocarbene Complexes of Chromium. Synthesis and Reactivity Toward Alkynes.
Authors: ALVAREZ C. , PARLIER A. , RUDLER H. , YEFSAH R. , DARAN J. C. , KNOBLER C.
Published: May 2016

It is demonstrated that the coupled alkyne insertion double‐bond cyclopropanation reactions are general for complexes bearing the bidentate alkene‐aminocarbene ligands, provided that no phenyl group is present on the carbene carbon atom.
ChemInform Abstract: Reaction of Neopentylidene Complexes of the Type M(CH‐tBu)(N‐2,6‐C6H3‐iPr2)(OR)2 (M: W, Mo) with Methyl Acrylate and N,N‐Dimethylacrylamide to Give Metallacyclobutane Complexes.
Authors: FELDMAN J. , MURDZEK J. S. , DAVIS W. M. , SCHROCK R. R.
Published: May 2016

The structure of (IIIa) is confirmed by a crystal structure determination (P21/c, Z=4).
ChemInform Abstract: Synthesis of New α‐Ferrocenylthiols, Thiol Esters and Thio Ethers from α‐Ferrocenylcarbinols.
Authors: MISTERKIEWICZ B. , DABARD R. , DARCHEN A. , PATIN H.
Published: May 2016

Starting with the carbinols (I), which are obtained in one step from ferrocene and which lead in acidic media to highly thiophilic carbenium ions, a convenient synthesis of new thiol esters such as (III) (6 examples) is performed.
ChemInform Abstract: Transition Metal‐Mediated Organic Synthesis. Part 11. 2‐Aryl‐Substituents: New Directing Groups in Cyclohexadienyl π‐Complexes.
Authors: OWEN D. A. , STEPHENSON G. R. , FINCH H. , SWANSON S.
Published: May 2016

The η5‐(methoxycyclohexadienyl)iron complex (I) is arylated with the diarylzinc agents (II) and then demethoxylated to produce the η5‐(phenylcyclohexadienyl)iron tricarbonyl salts (V).
ChemInform Abstract: Visible Light‐Harvesting in Covalently‐Linked Porphyrin‐Cyanine Dyes.
Authors: LINDSEY J. S. , BROWN P. A. , SIESEL D. A.
Published: May 2016

The title dyes (I) containing a covalently‐linked porphyrin and a cyanine moiety are prepared on two routes.
ChemInform Abstract: Synthesis of a Conformationally Restricted Porphyrin Tetramer Bridged by a 9,9′‐Spirobifluorene Spacer.
Authors: OSUKA A. , IDA K. , MARUYAMA K.
Published: May 2016

Starting with the spirobifluorenetetracarbaldehyde (I), the target compound (Va) is prepared by coupling with the pyrrolecarboxylate (II), followed by decarboxylation and bridging condensation reaction with the bis(formylpyrrolyl)methane (IV).
ChemInform Abstract: Marine Cembranolide Synthesis: A Synthesis of 2,3,5‐Trisubstituted Furan Intermediates for Lophotoxin and Pukalide.
Authors: PATERSON I. , GARDNER M. , BANKS B. J.
Published: May 2016

Pd(0)‐Catalyzed coupling of furyl zinc or tin compounds and vinyl iodides is found to be a versatile method for the preparation of 2,3‐dialkyl‐5‐alkenylfurans (cf.
ChemInform Abstract: Novel Access to the Synthesis of (1R)‐cis‐ and (1R)‐trans‐Chrysanthemum Acid from (+)‐3‐Carene.
Authors: RUKAVISHNIKOV A. V. , TKACHEV A. V. , VOLODARSKII L. B. , PENTEGOVA V. A.
Published: May 2016

The nitrosochloro derivative (II) is accessible from (+)‐3‐carene (I) according to a known procedure.
ChemInform Abstract: Hydroxylation of Steroidal 2,4‐Diene‐6‐ketones of the Stigmastane and Spirostane Series.
Authors: AKHREM A. A. , LAKHVICH F. A. , KHRIPACH V. A. , KOVGANKO N. V. , ZHABINSKII V. N.
Published: May 2016

Hydroxylation of the steroid dienones (Ia)‐(Ic) is regiospecifically effected by reaction with AgOAc and I2 in aqueous AcOH.
ChemInform Abstract: New Rearrangements in the Pregnane Side Chain.
Authors: ANNEN K. , HOFMEISTER H. , LAURENT H. , HOYER G.‐A.
Published: May 2016

Reaction of the acetylthiopregnenedione (III) with a large excess of NaN3 in MeOH (IV) yields a mixture of the rearrangement products (I) and (II) the ratio of which depends on the reaction temperature.
ChemInform Abstract: Steroids with 17‐Spiro‐dithiolanone Structure.
Authors: ANNEN K. , HOFMEISTER H. , LAURENT H. , HOYER G.‐A.
Published: May 2016

Utilizing a newly developed cyclization reaction in the pregnane side chain, the readily available compound (I) is transformed into the dithiolanones (IV) and (V) which are of interest as potential diuretic agents.
ChemInform Abstract: The Total Synthesis of Bisucaberin.
Authors: BERGERON R. J. , MCMANIS J. S.
Published: May 2016

Coupling of the amine (I) and the acid (III), both available from the hydroxylamine (II), and subsequent elaboration leads to the desired title compound (VII), a microbial iron chelator from Alteromonas haloplanktis with antitumor activity.
ChemInform Abstract: Syntheses of 4‐Hydroxy‐5‐iodo‐2,3‐dimethoxy‐6‐methylbenzoic Acid (IIIa) and 5‐Bromo‐4‐hydroxy‐2,3‐dimethoxy‐6‐methylbenzoic Acid (IIIb) ‐ Aromatic Constituents of the Calichemicins.
Authors: VAN LAAK K. , SCHARF H.‐D.
Published: May 2016

Starting from the readily available methyl 4‐O‐benzylorsellinate (I), the title compounds (IV) are prepared in 6 steps via (III) without any chromatographic separation needed (last steps (Me‐O)2SO2; H2/Pd‐C; ICl resp. Br2/CH2Cl2; 2.5 N NaOH).
ChemInform Abstract: Enzymes as Selective Reagents in Organic Synthesis: Enantioselective Preparation of ′Asymmetrized Tris(hydroxymethyl)methane′.
Authors: GUANTI G. , BANFI L. , NARISANO E.
Published: May 2016

Enzymatic hydrolysis of the diacetate (I) using porcine pancreas lipase yields selectively the monoacetate (II) which is the starting point for the synthesis of various chiral derivatives, e.g. (V) or (VII).
ChemInform Abstract: Monomolybdononavanadate and cis‐ and trans‐Dimolybdo‐octavanadate.
Authors: HOWARTH O. W. , PETTERSSON L. , ANDERSSON I.
Published: May 2016

Using potentiometry and 51V, 17O, and 95Mo NMR Mo(VI) is shown to replace "capping" V(V) in the decavanadate structure to yield (MoV9O28)5‐ (I) or (Mo2V8O28)4‐ (II).
ChemInform Abstract: Preparation and Electrochemical Properties of the SiS2‐P2S5‐Li2S Glass Coformer System.
Authors: KENNEDY J. H. , ZHANG Z.
Published: May 2016

The results obtained for glasses with general composition 0.4 ((1‐x)SiS2·xP2S5)·0.6 Li2S show that the glass transition temp. decreases from 337 °C for x = 0 to 208 °C for x = 1 while the activation energy increases from 0.36 to 0.50 eV over this composition range.
ChemInform Abstract: The Affinity of Carbon for Gold Complexes: Dissolution of Finely Disseminated Gold Using a Flow Electrochemical Cell.
Authors: GALLAGHER N. P. , HENDRIX J. L. , MILOSAVLJEVIC E. B. , NELSON J. H.
Published: May 2016

The electrochemical dissolution of finely disseminated gold from nonadsorbing and adsorbing carbon matrices is studied in the presence of several complexing agents.
ChemInform Abstract: Alkene Epoxidations Catalyzed by Iron(III), Manganese(III), and Chromium(III) Porphyrins. Effects of Metal and Porphyrin Substituents on Selectivity and Regiochemistry of Epoxidation.
Authors: TRAYLOR T. G. , MIKSZTAL A. R.
Published: May 2016

The epoxidation of norbornene (I) is most extensively studied by pentafluoroiodobenzene (VII) (explodes) in the presence of a wide variety of tetraarylporphyrin metal complexes such as (VI) (with other aryls as well as in the case of M: Fe and Mn) to get more insight in the mechanisms of epoxidation and to have better information in designing specific synthetic oxidation processes including catalyst design.
ChemInform Abstract: Electrochemical and Pulseradiolytic Reduction of (Pentamethylcyclopentadienyl)(polypyridyl)rhodium Complexes.
Authors: KOELLE U. + , KANG B.‐S. , INFELTA P. P. , COMTE P. , GRAETZEL M. +
Published: May 2016

Rh(III) complexes such as (I) on reduction give the corresponding neutral Rh(I) compounds.
ChemInform Abstract: Trimethylsilyl Cyanide ‐ A Reagent for Umpolung. Part 17. Diastereoselectivity in Nucleophilic Acylations of α‐Chiral Carbonyl Compounds with α,β‐Unsaturated Aldehydes After Umpolung.
Authors: HUENIG S. + , MARSCHNER C. , PETERS K. , VON SCHNERING H. G.
Published: May 2016

The title reaction ‐ i.e. the reaction of carbonyl compounds such as (II) and (VI) with the anions of silyloxynitriles (I) obtained by umpolung of the corresponding aldehydes ‐ proceeds via the two key intermediates (III) and (IV).
ChemInform Abstract: Dye‐Sensitized Photooxygenation of the C=N Bond.
Authors: CASTRO C. , DIXON M. , ERDEN I. , ERGONENC P. , KEEFFE J. R. , SUKHOVITSKY A.
Published: May 2016

The ketones (II), the oximes (III), and formic acid (IV) are the main products of the TPP‐catalyzed photooxidation of nitrones such as (I).
ChemInform Abstract: Synthesis of 6‐(3‐Aryl‐2‐propenyl)‐2,3‐dihydro‐5‐hydroxybenzofuran Derivatives by Cross Coupling Reactions.
Authors: ALABASTER R. J. , COTTRELL I. F. , HANDS D. , HUMPHREY G. R. , KENNEDY D. J. , WRIGHT S. H. B.
Published: May 2016

The title compounds (VII) or (XI) are prepared by coupling benzofurylmetals such as (V) or (IX) with the cinnamyl bromides (VI) or acetates (X).
ChemInform Abstract: Synthesis and SNV Reactions of 2‐(Haloethenyl)benzo(b)thiophene 1,1‐Dioxides.
Authors: GAJEWSKI R. P. , JACKSON J. L. , JONES N. D. , SWARTZENDRUBER J. K. , DEETER J. B.
Published: May 2016

Various halogenated benzothiophene dioxides such as (IV), (VII), and (XII) are prepared as outlined in the reaction scheme.
ChemInform Abstract: Electrophilic Aromatic Substitution with N‐Methoxy‐N‐acylnitrenium Ions Generated from N‐Chloro‐N‐methoxyamides: Syntheses of Nitrogen Heterocyclic Compounds Bearing a N‐Methoxyamide Group.
Authors: KAWASE M. , KITAMURA T. , KIKUGAWA Y.
Published: May 2016

The N‐methoxyamides (III) and (VI) are prepared by coupling the carboxylic acids (I) and (V) with the O‐methylhydroxylamine (II) via the corresponding acid chlorides.
ChemInform Abstract: Control of Regiochemistry in Nitrone Cycloadditions. Regioselectivity of the Reactions of Trisubstituted Nitrones with Electron‐Deficient and Conjugated Dipolarophiles.
Authors: BURDISSO M. , GANDOLFI R. , GRUENANGER P. +
Published: May 2016

The nitrones (I) react with monosubstituted alkenes such as (II), bearing an electron‐attracting group, under kinetically or thermodynamically controlled conditions to give either the 4‐substituted isoxazolidines (III) or the 5‐substituted isomers (IV) as main products.
ChemInform Abstract: Synthesis of 3,4,5‐Triamino‐4H‐1,2,4‐triazole (Guanazine) and Its 4‐Arylideneamino Derivatives.
Authors: EMILSSON H.
Published: May 2016

The title compound (II), which can be used as an appropriate starting material in the synthesis of different bicyclic heterocycles, is readily obtained from thiosemicarbazide (I) or its ether (III) by the methods A) or B), respectively.
ChemInform Abstract: A Novel Heterocyclic Compound. Synthesis and Reactivities of an Oxazolo(3,2‐a)thieno(3,2‐d)pyrimidine Derivative.
Authors: FUKUMI H. , SUGIYAMA M. , SAKAMOTO T.
Published: May 2016

Refluxing of the 3‐aminothiophene (I) with 2‐chloroethyl isocyanate (II) gives the urea (III).
ChemInform Abstract: Selective Synthesis of 1‐Aryl‐3‐quinoxalinyl‐1,2,4‐triazole and Furo(2,3‐b)quinoxaline.
Authors: KIM H. S. , KURASAWA Y. , TAKADA A.
Published: May 2016

The reaction of the ester (I) with the in situ generated diazonium chloride (II) gives the arylhydrazonoester (IVa) whose reaction with hydrazine affords the hydrazide (IVb).
ChemInform Abstract: Benzo‐as‐triazine Tri‐N‐oxide. A Novel Cycloaddition Product from Reactions of Benzofurazan N‐Oxides with Nitrile Oxides.
Authors: ARGYROPOULOS N. G. , GALLOS J. K. , ZHANG Z.‐Y. , PALENIK G. J.
Published: May 2016

The benzofurazan N‐oxides (I) undergo cycloaddition reaction with the aromatic nitrile oxides (II) to give the benzo‐as‐triazine tri‐N‐oxides (III), together with the mono‐ (IV), (V), or bisadducts (VI) and (VII).
ChemInform Abstract: Palladium‐Catalyzed Diastereoselective Syntheses of (E)‐1‐Trimethylsilyl‐2‐alkenes, (E)‐1‐Trimethylsilyl‐1‐alken‐3‐ynes, (1E,5E)‐1‐Trimethylsilyl‐1,5‐alkadien‐3‐ynes, (1E,3Z)‐ and (1E,3E)‐1‐Trimethylsilyl‐1,3‐alkadienes.
Authors: ANDREINI B. P. , CARPITA A. , ROSSI R. , SCAMUZZI B.
Published: May 2016

On the basis of the observation that E‐1‐bromo‐1‐alkenes undergo preferentially stereospecific Pd‐catalyzed cross‐coupling with organometallics in the presence of the corresponding Z isomers, efficient and convenient diastereoselective procedures are developed to prepare nearly stereoisomerically pure title compounds such as (III), (VI), (VIII) or (IX) from stereoisomeric mixtures of alkenyl bromides.
ChemInform Abstract: Primary α‐Dichloromethylphosphine. A Precursor of Unhindered C‐Chlorophosphaethylene and Synthetic Equivalent of Phosphaacetylene.
Authors: GUILLEMIN J. C. , LE GUENNEC M. , DENIS J. M.
Published: May 2016

The dichloride (I) is esterified with phenol (II) to give the phosphonate (III) which is reduced, forming the α‐dichlorophosphine (IV).
ChemInform Abstract: Calcium, Strontium, and Barium Cyclooctatetraenediyl Complexes: Synthesis of a Stable Phosphacyclopropane (Structurally Authenticated).
Authors: HUTCHINGS D. S. , JUNK P. C. , PATALINGHUG W. C. , RASTON C. L. , WHITE A. H.
Published: May 2016

Cyclooctatetraene (I) is treated with vapours of the metals (II) in tetrahydrofuran (III) to give the complexes (IV) which release THF, forming the pyrophoric compounds (V).
ChemInform Abstract: Conversion of Epoxides to Rhodium Enolates: Direct Evidence for a Mechanism Involving Initial C‐H Activation.
Authors: WU J. , BERGMAN R. G.
Published: May 2016

The photochemical reaction of the dihydride (I) with ethylene oxide (II) results in the formation of the NMR spectroscopically identified metalated epoxide (III) which at 0 °C slowly rearranges to the ring‐opened, C‐bound metal enolate (IV).
ChemInform Abstract: Synthesis and Structural Elucidation of 19‐Norpregnane Derivatives with Nitrogen‐Containing Four‐Membered Rings in 14,15‐Position.
Authors: PONSOLD K. , PROUSA R. , RECK G.
Published: May 2016

The introduction of a C2 side chain in the 17‐position of the azetidino‐estratrienol (I) leads to the ethylidene derivative (V) which is converted to the steroid (X) via the intermediates (VI), (VII) (VIII).
ChemInform Abstract: Stereoselective Radical Cyclization for the Synthesis of Bicyclic Higher‐Carbon Sugars. Synthesis of the Sugar Moiety of Octosyl Acids.
Authors: ARAKI Y. , ENDO T. , ARAI Y. , TANJI M. , ISHIDO Y.
Published: May 2016

The allofuranose (I) undergoes radical‐induced cyclization/rearrangement to form the allononofuranuronate (II).
ChemInform Abstract: Preparation and Mass Spectral Analysis of O‐Hydroxyethyl Derivatives of D‐Glucose.
Authors: NAGAI K. , HONDA A. , KIHO T. , UKAI S. , TSUCHIYA T.
Published: May 2016

Treatment of the D‐glucose derivatives (I) with 2‐bromoethyl tetrahydropyranyl ether (II) produces the D‐glucosyl ethers (III).
ChemInform Abstract: Variations of Conductivity and Thermoelectric Power of Iron, Cobalt, and Nickel Iodides as a Function of Iodine Pressure Between 200 and 450 °C.
Authors: CARTON D. , RASNEUR J. , DELMAIRE J.‐P.
Published: May 2016

Using a newly designed method the variations of electrical conductivities and thermoelectric powers of FeI2, CoI2, and NiI2 in thermodynamic equilibrium, between 200 and 450 °C as functions of the two variables temp. and iodine pressure (10‐5.95‐1 atm) are measured (schematic drawing of the apparatus).
ChemInform Abstract: Electrical Admittance Due to Electron‐Hole Recombination in n‐GaAs and n‐GaP Electrodes.
Authors: VANMAEKELBERGH D. , TER HEIDE R. P. , KRUIJT W.
Published: May 2016

From measurements of the additional impedance, observed at n‐GaAs ((100) surface) and n‐GaP ((111) surface) under conditions of hole injection (by Ce4+ in 4 N H2SO4) or illumination (in 4 N H2SO4) as a function of the frequency (100‐65000 Hz), the generation rate of holes, and the electrode potential, the following conclusions are drawn concerning the recombination at the electrodes.
ChemInform Abstract: An Efficient Approach to the Basic Skeleton of the cis‐Trikentrins.
Authors: YASUKOUCHI T. , KANEMATSU K.
Published: May 2016

The N‐propynyl N‐dienyl amide (V), prepared from the bicyclic carboxylate (I), reacts with formaldehyde (VI) to give the tetracyclic carboxamide (VII).
ChemInform Abstract: Joint Reaction of Prostanoidic Cyclopentenes and Acetylenic Ketones with Hydrogen Sulfide.
Authors: TOLSTIKOV G. A. , MIFTAKHOV M. S. , VEL'DER YA. L. , BADRETDINOVA Z. B. , DANILOVA N. A.
Published: May 2016

The dithia‐cis‐bicyclo(3.3.0)octanones (IV), potential synthons for the preparation of heteroprostacyclins, are produced by a "tandem" reaction between the cyclopentenones (I), the acetylenic ketone (II) and H2S (III).
ChemInform Abstract: First Synthesis of Furo(2,3‐c)quinolines Through Pd(0)‐Catalyzed Coupling of Furanboronic Acid with Functionalized Haloarenes.
Authors: YANG Y.
Published: May 2016

Pd(0)‐catalyzed coupling of o‐bromonitrobenzene (I) with 2‐formylfuran‐3‐boronic acid (II) gives the o‐nitrophenylfuran‐2‐aldehyde (III) which undergoes reductive cyclization, forming the furoquinoline N‐oxide (IV).
ChemInform Abstract: Tetradentate Ligands for the Mo‐Mo Quadruple Bond from cis‐Coordinated Phosphonites.
Authors: WONG E. H. , VALDEZ C. , GABE E. J. , LEE F. L.
Published: May 2016

The deprotonated anions of (I) (title ligands) react to give the mixed‐valent tetrametallic compounds (III), isolated as disodium‐bis(tetrabutylammonium) salts.
ChemInform Abstract: Synthetic Cephalosporins. Part 3. Synthesis and Antibacterial Activity of 7‐(2‐(2‐Aminothiazol‐4‐yl)‐3‐carboxy‐2‐propenoamido)cephalosporins and Related Compounds.
Authors: SAKAGAMI K. , ATSUMI K. , YOSHIDA T. , NISHIHATA K.
Published: May 2016

Wittig reaction of the keto ester (I) with the phosphoranes (II) leads to the formation of the unsaturated diesters (III) and (IV).
ChemInform Abstract: The Characterization of Electron Cyclotron Resonance Plasma Deposited Silicon Nitride and Silicon Oxide Films
Authors: NGUYEN SON VAN NGUYEN SON VAN , ALBAUGH K.
Published: May 2016

is performed by using ellipsometry, AES, FTIR‐spectroscopy, TEM, wet (HF) etching, and nuclear reaction analysis (determination of hydrogen concentration).
ChemInform Abstract: Structures and Properties of Bis(thiocyanato‐N)bis(6‐methyl(1,2,4)triazolo(1,5‐a)pyrimidine‐N3)copper(II), a Distorted Tetrahedral Copper(II) Thiocyanate Compound, and Bis(thiocyanato‐N)bis(5‐methyl(1,2,4)triazolo(1,5‐a)pyrimidine‐N3)copper(II), a Polynuclear Pseudo‐Layered System.
Authors: CORNELISSEN J. P. , DE GRAAFF R. A. G. , HAASNOOT J. G. , PRINS R. , REEDIJK J. , BIAGINI‐CINGI M. , MANOTTI LANFREDI A. M. , TIRIPICCHIO A.
Published: May 2016

In order to investigate the influence of methyl groups of substituted triazolopyrimidines on their coordination behavior, the structures and spectroscopic properties of the two title complexes (I) (space group C2/c, Z=4) and (II) (P21/c, Z=2) are examined and compared with earlier prepared copper(II) thiocyanate complexes.
ChemInform Abstract: Steric Effect of the Adamantyl Ligand on Crystal Structure and Dissociation Rates in Organocobalt B12 Models.
Authors: BRESCIANI PAHOR N. , RANDACCIO L. , ZANGRANDO E. , MARZILLI P. A.
Published: May 2016

The new compound (Ia) crystallizes in P1 with Z=4 and (Ib) in P21/c with Z=4.
ChemInform Abstract: Magnesium Amide Bases and Amido‐Grignards. Part 1. Ortho Magnesiation.
Authors: EATON P. E. , LEE C.‐H. , XIONG Y.
Published: May 2016

Hauser bases (R2N‐MgBr) and magnesium diamides ((R2N)2Mg) are shown to be very useful agents for ortho metalation.
ChemInform Abstract: 4H‐Benzo(4,5)cyclohepta(1,2‐b)thiophenes and 9,10‐Dihydro Derivatives. Sulfonium Analogues of Pizotifen and Ketotifen; Chirality of Ketotifen; Synthesis of the 2‐Bromo Derivative of Ketotifen.
Authors: POLIVKA Z. , BUDESINSKY M. , HOLUBEK J. , SCHNEIDER B. , SEDIVY Z. , SVATEK E. , MATOUSOVA O. , METYS J. , VALCHAR M. , SOUCEK R. , PROTIVA M.
Published: May 2016

Grignard reaction of the known ketone (I) followed by dehydration and methylation provides the methiodide (V) ( = sulfonium analogue of pizotifen).
ChemInform Abstract: A Study of 2‐Methyl‐3‐phenylsulfinyl‐2,3,4,5‐tetrahydrothiophene 1,1‐Dioxides: NMR Spectra, Crystal Structure, and Dehydrosulfinylations.
Authors: FANG J.‐M. , LIN J.‐R. , DUH J.‐M. , CHENG M.‐C. , WANG Y.
Published: May 2016

The structures of the title compounds (I) and (III) are confirmed by NMR spectroscopy and X‐ray analysis of (IIIa) (space group P21/c with Z=4).
ChemInform Abstract: (4RS,5R)‐ and (4RS,5S)‐4‐Methoxy‐5‐methyloxazolidin‐2‐one Derivatives of Threonine ‐ Interesting Chiral Amidoalkylating Reagents.
Authors: HERBORN C. , ZIETLOW A. , STECKHAN E.
Published: May 2016

The title compounds (III) and (VII) can be efficiently prepared by anodic decarboxylation of the carboxylic acids (I), (VIa) or (VIb).
ChemInform Abstract: Homochiral Fluoroorganic Compounds. Part 14. 2‐Fluoromethyl‐tetrahydrofurans and ‐tetrahydropyrans by Cyclooxymercuration of Unsaturated α‐Fluoro Alcohols.
Authors: ARNONE A. , BRAVO P. , FRIGERIO M. , RESNATI G. , VIANI F.
Published: May 2016

The title reaction leads to furan or pyran derivatives, e.g. (III), (V), (VI) and (X).
ChemInform Abstract: Palladium(0)‐Catalyzed Hydrostannylation of Alkynes. Stereospecific syn‐Addition of Tributyltin Hydride.
Authors: MIYAKE H. , YAMAMURA K.
Published: May 2016

Tributyltin hydride (II) reacts with the alkynes (I) in the presence of Pd(0) phosphine catalysts to form the addition products (III) and (IV).
ChemInform Abstract: A High‐Potential Mononuclear Manganese(IV) Complex. Synthesis, Structure, and Properties, Including EPR Spectroscopy and Electrochemistry, of (Mn(HB(3,5‐Me2pz)3)2)(ClO4)2 (pz: Pyrazolyl).
Authors: CHAN M. K. , ARMSTRONG W. H.
Published: May 2016

The nearly octahedral title complex (III) (space group P1, Z=2) with N6 coordination environment is synthesized according to the scheme and characterized by X‐ray structure analysis, magnetic susceptibility, electrochemical, and spectroscopic measurements.
ChemInform Abstract: Unique Properties of Ruthenium(II) Phosphole Complexes.
Authors: VAC R. , NELSON J. H. , MILOSAVLJEVIC E. B. , SOLUJIC L.
Published: May 2016

In order to study the effects of geometry and the nature of the phosphine on catalytic activity, the complexes (IV), (V), (VI), (VII), and (XII) are synthesized.
ChemInform Abstract: An Efficient Synthesis of Novel α‐Diketone and α‐Keto Ester Derivatives of N‐Protected Amino Acids and Peptides.
Authors: ANGELASTRO M. R. , PEET N. P. , BEY P.
Published: May 2016

The N‐protected alanine (Ia) or dipeptide (Ib) are activated and then coupled with O,N‐dimethylhydroxylamine hydrochloride, producing the amides (III) which react with (1‐ethoxyvinyl)magnesium bromide to yield the α‐keto vinyl ethers (V).
ChemInform Abstract: Acyclic Nucleotide Analogues. Part 7. Synthesis of (3‐Hydroxy‐2‐phosphonylmethoxypropyl) Derivatives of Heterocyclic Bases.
Authors: HOLY A. , ROSENBERG I. , DVORAKOVA H.
Published: May 2016

Various analogues of the antiviral agent HPMPA (I), containing modified heterocyclic base, are prepared from derivatives such as (II) (racemates) or their (S)‐isomers exemplified in the scheme for (II) → (IV)/(V).
ChemInform Abstract: Effect of Iron and Boron Carbide on the Densification and Mechanical Properties of Titanium Diboride Ceramics
Authors: KANG E. S. , JANG C. W. , LEE C. H. , KIM C. H. , KIM D. K.
Published: May 2016

is studied for TiB2 samples sintered at 2000 °C in argon atmosphere.
ChemInform Abstract: Preparation of the High‐Quality Superconductor La1Ba2Cu3Oy.
Authors: WADA T. , SUZUKI N. , YAMAUCHI H. , TANAKA S. , MAEDA A. , UCHINOKURA K.
Published: May 2016

It is found that the oxygen content in the title superconductor is controlled by the sintering time in N2.
ChemInform Abstract: Degradation Processes in a LaNi5 Electrode.
Authors: BOONSTRA A. H. , LIPPITS G. J. M. , BERNARDS T. N. M.
Published: May 2016

The relation between the decrease in hydrogen storage capacity of a LaNi5 electrode as a function of the number of charge‐discharge cycles and the amount of La(OH)3 and Ni(OH)2 formed is studied.
ChemInform Abstract: Lanthanides in Organic Synthesis. Part 21. A Highly Efficient Deoxygenation of α‐Oxygenated Esters via SmI2‐Induced Electron Transfer Process.
Authors: KUSUDA K. , INANAGA J. , YAMAGUCHI M.
Published: May 2016

Samarium diiodide in THF is employed in the deoxygenation of the α‐methoxy or α‐acetoxycarboxylates (I), the α‐hydroxycarboxylates (III), or the tartrates (V), yielding the esters (II), (IV), and the maleates (VI) respectively.
ChemInform Abstract: 2‐Acetyl‐4,5,6‐trichloro‐1,3‐tropolone from Ring Enlargement of Tetrachloro‐o‐benzoquinone with Acetone.
Authors: KOGLER H. , FEHLHABER H.‐W. , LEUBE K. , DUERCKHEIMER W. +
Published: May 2016

The reaction between tetrachloro‐o‐quinone (I) and acetone (II) yields the title compound (III), i.e. a 1,3‐tropolone instead of the isomeric 1,2‐tropolone derivative reported earlier for this reaction.
ChemInform Abstract: The Preparation and Alkylation of β‐Sultam Mono‐ and Dianions.
Authors: SZYMONIFKA M. J. , HECK J. V.
Published: May 2016

1,2‐Thiazetidine 1,1‐dioxide (I) is lithiated and then treated with the electrophilic reagents (II) to give the 4‐substituted products (III).
ChemInform Abstract: Synthesis and Antitumor Activity of Podophyllotoxin Aza‐Analogues.
Authors: TOMIOKA K. , KUBOTA Y. , KOGA K.
Published: May 2016

The oxazolidinone (III), derived from the amino acid (I), undergoes ring closure with the aldehyde (IV), yielding the fused isoquinoline derivatives (V).
ChemInform Abstract: Phosphineborane Chemistry. ‐ An Anionic Tripod Ligand Featuring Three Ylide Functions and the Structure of the Corresponding Electroneutral Double‐Ylide.
Authors: WIMMER T. , STEIGELMANN O. , MUELLER G. + , SCHMIDBAUR H.
Published: May 2016

In a search for a tripod ligand featuring three ylidic functions based on a phosphineborane skeleton the compound (I) is treated with KH to give the corresponding triple‐ylide salt (II).
ChemInform Abstract: Reactivity Studies of the Zirconium‐Induced Insertion of Isonitriles into a 1‐Sila‐3‐zirconacyclobutane Ring. Structural and Chemical Evidence of “Carbenium‐Like” Intermediates for the Intramolecular 1,2‐Silyl Shift and Reductive Coupling Reactions.
Authors: BERG F. J. , PETERSEN J. L.
Published: May 2016

The reaction of MeCN (II) with the 1‐sila‐3‐zirconacyclobutane compound (I) follows two different competitive pathways depending on the reaction conditions.
ChemInform Abstract: Cofacial Cyclopentadienes. Synthesis and Reactions of 1,8‐Bis(cyclopentadienyl)naphthalene.
Authors: GRONBECK D. A. , MATCHETT S. A. , ROSENBLUM M.
Published: May 2016

Cyclopentadienyllithium (I) reacts consecutively with the cuprous bromide dimethyl sulfide complex and 1,8‐diiodonaphthalene (II) to give the polycyclus (III) via the intermediate mentioned in the title.
ChemInform Abstract: Base‐Promoted Cleavage of a P‐C Bond in (PtCl2(Ph2PCH2PPh2‐PP′)) Under Mild Conditions.
Authors: BERGAMINI P. , SOSTERO S. , TRAVERSO O. , KEMP T. J. , PRINGLE P. G.
Published: May 2016

The title complex (I) reacts with NaOH under mild conditions to give the hydroxo‐bridged isomers (III) containing phosphine and phosphinite ligands.
ChemInform Abstract: Synthetic Transformation of the Abietic Acid Skeleton. Degradation of the Carbonyl Function.
Authors: HASLINGER E. , RUDOLPH S.
Published: May 2016

Starting from dehydroabietic acid the tosylate (I) is prepared according to standard procedures.
ChemInform Abstract: Malotilate: Structure and Phase Transformation.
Authors: VEGA D. R. , BAGGIO R. F.
Published: May 2016

The title hepatoprotector (I) crystallizes in the two phases A (space group P21/a with Z = 8) and B (space group P1 with Z=4).
ChemInform Abstract: Photo‐Aza‐Claisen Rearrangements of Cyclic Enaminones.
Authors: VOGLER B. , BAYER R. , MELLER M. , KRAUS W. , SCHELL F. M.
Published: May 2016

The cyclic enaminones (I), prepared from diketones and the corresponding cycloalkenylethylamines, undergo photocyclization to form the tricyclic systems (II).
ChemInform Abstract: 1,11‐o‐Benzeno(2)orthocyclo(1)(6,8)heptafulvenophane: A New Route to Heptafulvene from 8,8‐Dichloro‐3‐alkyl‐4‐oxatricyclo(5.1.0.03,5)octane.
Authors: FUKAZAWA Y. , OKAJIMA T. , USUI S.
Published: May 2016

The bridged dichloro dicyano epoxide (I) is treated with TiCl4 to form the heptafulvene (II) instead of the expected cyclotroponophane (V).
ChemInform Abstract: Photocyclization of Terthiophenes.
Authors: JAYASURIYA N. , KAGAN J. , OWENS J. E. , KORNAK E. P. , PERRINE D. M.
Published: May 2016

Terthiophenes such as (I) bearing thienyl groups attached to the 2‐ and 3‐positions of the central thiophene ring undergo oxidative photocyclization, forming benzotrithiophenes such as (II).
ChemInform Abstract: 13C NMR Studies. Part 141. The Isolation, Structure, and Stereochemistry of Traversiadiene. The Precursor Hydrocarbon of Traversianal Biosynthesis.
Authors: STOESSL A. , ROCK G. L. , STOTHERS J. B.
Published: May 2016

Detailed 1H and 13C NMR studies as well as a series of NOE difference spectra establish structure (I) for traversiadiene.
ChemInform Abstract: Versatile Modes of Allene Bonding in the Structures of (W2(O‐tBu)6(C3H4)), (W2(O‐tBu)6(C3H4)(CO)2), and (W2(O‐tBu)6(C3H4)2).
Authors: CAYTON R. H. , CHACON S. T. , CHISHOLM M. H. , HAMPDEN‐SMITH M. J. , HUFFMAN J. C. , FOLTING K. , ELLIS P. D. , HUGGINS B. A.
Published: May 2016

In the previously prepared complex (I) ( P21/n, Z=4) in contrast to a former prediction the allene moiety and the W2 center in the complex are parallel, this coordination is unprecedented.
ChemInform Abstract: Direct Conversion of Methane into Methanol.
Authors: BURCH R. , SQUIRE G. D. , TSANG S. C.
Published: May 2016

Variations in the type of reactor, the residence time, methanol/oxygen ratio, and the gas mixing and dilution (with N2) cause only small changes in the selectivity of the formation of MeOH (ca.
ChemInform Abstract: N‐Arylhydroxamic Acids: Reaction of Nitroso Aromatics with α‐Oxo Acids.
Authors: SAKAMOTO Y. , YOSHIOKA T. , UEMATSU T.
Published: May 2016

The keto acids (I) react with the nitroso arenes (II) to give the hydroxamic acids (III).
ChemInform Abstract: A Stereoselective Route to Enantiomeric 2‐Alkyl‐1,2,3,6‐tetrahydropyridines.
Authors: MEHMANDOUST M. , MARAZANO C. , DAS B. C.
Published: May 2016

The key step in the synthesis of the alkyltetrahydropyridines (IX) is the reductive cyclization of the N‐(hydroxyethyl)pyridinium chlorides (III), forming the bicyclic oxazolidines (IV).
ChemInform Abstract: Evidence for α‐Phosphanyl‐α′‐sulfinylcarbene to α‐Phosphoranyl‐α′‐sulfanylcarbene Rearrangement. Synthesis of 2‐Oxo‐ and 2‐Thioxo‐1,2λ5‐azaphosphetanes.
Authors: SICARD G. , GRUETZMACHER H. + , BACEIREDO A. , FISCHER J. , BERTRAND G.
Published: May 2016

The phosphanyl(trimethylsilyl)diazomethane (I) reacts with the sulfinyl chloride (II) via the intermediates (III) ‐ (V) to give the oxoazaphosphetane (VIa).
ChemInform Abstract: Synthesis of (+)‐(2S,6S)‐trans‐α‐Irone and of (‐)‐(2S,6S)‐trans‐γ‐Irone.
Authors: HELMLINGER D. , FRATER G.
Published: May 2016

Starting from the aldehyde (I) the tetramethylcyclohexene (II) is prepared by a sequence of known procedures.
ChemInform Abstract: Convenient Preparation of Dimethyl ((3S)‐3‐Methyl‐2‐oxo‐5‐octynyl)phosphonate.
Authors: HARRE M. , TRABANDT J. , WESTERMANN J.
Published: May 2016

The ester (V) is obtained together with the chiral auxiliary which can be reused for the preparation of (I).
ChemInform Abstract: Ta2Se: A Tantalum‐Rich Selenide with a New Layer Structure.
Authors: HARBRECHT B.
Published: May 2016

Reduction of TaSe2 by Ta in the melt yields the new title compound (arc melting of a pressed Ta/TaSe2 mixture prepared from the elements at 1170 K).
ChemInform Abstract: The Crystal Structure of CsBa2Cr2F11: First Evidence of Vertex‐Sharing Octahedral Dimers in Fluorides.
Authors: FEREY G. , RENAUDIN J. , DE KOZAK A. , MARY Y.
Published: May 2016

Green single crystals of the title compound are prepared by melting a stoichiometric mixture of CsF, BaF2, and CrF3 at 860 °C under argon.
ChemInform Abstract: The First Structural Characterization of a Nickel(I) Macrocyclic System: Structure of Nickel(I) Diphenyldi‐p‐tolyl‐21‐thiaporphyrin.
Authors: LATOS‐GRAZYNSKI L. , OLMSTEAD M. M. , BALCH A. L.
Published: May 2016

The title complex (I) crystallizes in P21/c with Z=4.
ChemInform Abstract: Reversal of π‐Facial Diastereoselection Upon Electronegative Substitution of the Substrate and the Reagent.
Authors: CIEPLAK A. S. , TAIT B. D. , JOHNSON C. R.
Published: May 2016

Electronegative substitution at C‐3 of cyclohexanones, e.g. in (I), and of methylenecyclohexanes, e.g. in (II), is found to increase the relative proportion of axial attack in a number of reactions widely differing from the points of view of the transition‐state polarization, geometry, and electron deficiency.
ChemInform Abstract: The Stereochemistry of the 1,4‐Addition of Dibromocarbene to 1,2‐Dimethylenecycloheptane.
Authors: KRAAKMAN P. A. , DE WOLF W. H. , BICKELHAUPT F.
Published: May 2016

1,2‐ and 1,4‐addition of dibromocarbene leads to the corresponding adducts (9:1 ratio), which are reduced to give the bromides (III)‐(V).
ChemInform Abstract: Reactions with Dimethyl Carbonate. Part 3. Applications and Mechanism of Mono‐ or Bis‐methylation of Aromatic Amines with Dimethyl Carbonate.
Authors: LISSEL M. , ROHANI‐DEZFULI A. R. , VOGT G.
Published: May 2016

In order to substitute Me2SO4 (or MeI) by a less toxic reagent, Me2CO3 is applied.
ChemInform Abstract: Hydrated σ‐Bonded Organometallic Cations in Organic Synthesis. Part 2. Allylstannation of Aldehydes by Crotyltin Chlorides in Acid Media.
Authors: MARTON D. , TAGLIAVINI G. , VANZAN N.
Published: May 2016

The title reaction is carried out in the presence of aqueous 0.1‐4.0 M HClO4.
ChemInform Abstract: Allylic Stereocentre‐Directed Cyclopropanation. A New Highly Enantioselective Synthesis of Hemicaronic Aldehyde.
Authors: BERNARDI A. , SCOLASTICO C. , VILLA R.
Published: May 2016

The methoxycarbonylvinyloxazolidine (I) reacts with the phosphorus ylid (II) to give selectively the cyclopropane (III).
ChemInform Abstract: Efficient Regio‐ and Stereocontrolled Synthesis of Highly Functionalized Polycyclic Systems Using the Diels‐Alder Addition of Stannyl‐Substituted Vinylketeneacetals.
Authors: STORK G. , KAHNE D.
Published: May 2016

The vinylketeneacetal (II) obtained by deprotonation/silylation of methyl 3‐trimethylstannyl‐2‐butenoate undergoes Diels‐Alder reaction regiospecifically with the naphthoquinone (I) to give the tricyclic adduct (III).
ChemInform Abstract: Reactivity of (i‐C3H7)2GaBr with C2H5SH and C2H5SeH. Synthesis of i‐C3H7(Br)GaEC2H5 (E: S, Se).
Authors: HOFFMANN G. G. , FISCHER R.
Published: May 2016

With respect to the reactivity of the Ga‐C, Ga‐Br, and Ga‐E bonds the title reaction is investigated.
ChemInform Abstract: Preparation and Crystal Structure of Cs4Se16.
Authors: SHELDRICK W. S. , BRAUNBECK H. G.
Published: May 2016

The cesium polyselenide mentioned in the title is prepared by methanolothermal synthesis from Cs2CO3 and Se (1:4, 160 °C, 13 bar; 88% yield based on Se).
ChemInform Abstract: Generation and Cycloadditions of 2‐(N‐Acylamino)‐1‐thia‐1,3‐dienes. Structural Investigations Using NMR Methods. Part 1.
Authors: BARNISH I. T. , FISHWICK C. W. G. , HILL D. R. , SZANTAY C. JUN.
Published: May 2016

Dihydro‐2H‐thiopyrans (IV) are available via (4 + 2) cycloaddition of the novel title compounds (III) with the starting thioamides (I).
ChemInform Abstract: Synthesis and Reactions of 2‐Alkoxy‐1,1,3,3,3‐pentafluoropropenes as a Synthon for Trifluoromethylated Compounds.
Authors: KUBOTA T. , KONDOH Y. , OHYAMA T. , TANAKA T.
Published: May 2016

Hexafluoroisopropanol (I) is transformed into the O‐protected derivatives (III) which rearrange upon treatment with LDA, yielding the pentafluoropropenyl compounds (V).
ChemInform Abstract: Long‐Acting Dihydropyridine Calcium Antagonists. Part 3. Synthesis and Structure‐Activity Relationships for a Series of 2‐((Heterocyclylmethoxy)methyl) Derivatives.
Authors: ALKER D. , CAMPBELL S. F. , CROSS P. E. , BURGES R. A. , CARTER A. J. , GARDINER D. G.
Published: May 2016

In order to prepare calcium antagonists of the dihydropyridine‐type, the authors develop the syntheses of various 2‐(heterocyclylmethoxy)methyldihydropyridine derivatives.
ChemInform Abstract: Synthesis of N‐Acridinyl and N‐Quinolinyl Derivatives of Radioprotective Aminothiols.
Authors: DEMONCHAUX P. , LAAYOUN A. , DEMEUNYNCK M. , LHOMME J.
Published: May 2016

Title compounds of type (VII) protect thymidine by acting as scavengers for the water radiolysis species.
ChemInform Abstract: Organic Syntheses with Transition‐Metal Complexes. Part 37. Simple Preparation Methods for Thio‐ and Selenocarbene Complexes of Chromium, Tungsten and Manganese.
Authors: AUMANN R. , SCHROEDER J. +
Published: May 2016

A wide variety of the title complexes such as (III) and (V) are prepared from the corresponding benzoylmetalates in two‐step procedures via acetylation and thiolysis (or selenolysis).
ChemInform Abstract: Reaction of Trifluoromethyl Ketones. Part 6. Synthesis of Trifluorinated Analogues of Monoterpenes.
Authors: NAGAI T. , OGAWA K. , MORITA M. , KOYAMA M. , ANDO A. , MIKI T. , KUMADAKI I.
Published: May 2016

Oxidation of the cyclohexene (I) produces the alcohol (II) or the ketones (III) and (IV) depending on the oxidizing agents employed.
ChemInform Abstract: Synthesis of Benzopyran Derivatives. Part 9. Unusual Behavior of 2,2‐Dimethyl‐2H‐chromene Derivatives (Precocenes) in Phenylselenenylation.
Authors: WAGNER P. , DUDDECK H. , TIMAR T. , CSUHAI E. , JASZBERENYI J. CS.
Published: May 2016

The title reaction of precocenes, e.g. (I) and (V), yields substitution products and does not lead to the expected C‐3/C‐4 addition products.
ChemInform Abstract: Synthesis and Structure of Na2(BeO2): Na8(OBeO2BeO2BeO2BeO).
Authors: SCHULDT D. , HOPPE R.
Published: May 2016

Single crystals of the title compound are obtained for the first time from the reaction of Na2O and BeO (Na: Be = 2.2:1.0, Ni‐tube, 750 °C, 21 d).
ChemInform Abstract: Kinetics of Reduction of a Series of Imidazolium Ions and Cobalt(III)‐Imidazole Complexes by 1‐Hydroxy‐1‐methylethyl Radicals.
Authors: BAKAC A. , BUTKOVIC V. , ESPENSON J. H. , LOVRIC J. , ORHANOVIC M.
Published: May 2016

A series of eight imidazolium ions and a series of five Co‐imidazole complexes are investigated.
ChemInform Abstract: Transition‐Metal‐Diene Complexes in Organic Synthesis. Part 3. Iron‐Mediated Diastereoselective Spiroanellation to the Spiro(1,2,3,4‐tetrahydroquinoline‐4,1′‐cyclohexane) System and a Novel Rearrangement to 2,3‐Dihydroindole Derivatives.
Authors: KNOELKER H.‐J. + , BOESE R. , HARTMANN K.
Published: May 2016

The title spiro compounds (V) possess the substructure of the discorhabdins and prianosins, a series of compounds with cytotoxic, antimicrobial and antitumor activities isolated from marine sources.
ChemInform Abstract: Stepwise NO Chemisorption Processes on Synthetic Chrysotile Asbestos: Tubular Crystals with Acidic and Basic Surfaces.
Authors: UCHIYAMA H. , KANEKO K. , OZEKI S.
Published: May 2016

The adsorption isotherms obtained for the adsorption of NO at chrysotile, Mg6Si4O10(OH)8, at 303 K exhibit two steps: the first step observed at low NO pressure is due to NO adsorption at the outer, basic Mg(OH)2 surfaces of the tubular crystals, while the second step occurring at high NO pressure is caused by adsorption at the inner, acidic SiO2 surface.
ChemInform Abstract: The Influence of Support on the Availability of Nickel in Supported Catalysts for Hydrogen Chemisorption and Hydrogenation of Benzene
Authors: NARAYANAN S. , SREEKANTH G.
Published: May 2016

is studied by surface area and acidity measurements, XRD, H2 and O2 adsorption measurements and determination of the catalytic activities.
ChemInform Abstract: Antimony(III) Compounds with SbFnOm Coordination Spheres. Crystal Structures of K(SbF2)HAsO4, NH4(SbF2)HAsO4, and Sb3O2F5.
Authors: HOLZ K. , MATTES R.
Published: May 2016

The compounds M(SbF2)HAsO4 (M: K, NH4) are precipitated from aqueous solutions of SbF3 and MH2AsO4 (60 °C, 1‐2 min).
ChemInform Abstract: Structural, Chemical, and Physical Properties of Rare‐Earth Metal Rhodium Carbides LnRhC2 (Ln: La, Ce, Pr, Nd, Sm).
Authors: HOFFMANN R.‐D. , JEITSCHKO W. , BOONK L.
Published: May 2016

The title compounds are of interest due to their potential as superconductors and ferromagnets.