bluuebunny/crossref_metadata_2025_split huggingface dataset:
ChemInform Abstract: Discovery of a New, Metallic (but Not Superconducting) Compound in the La‐Sr‐Cu‐O System: La5SrCu6O15.
Authors: TOKURA Y. , TORRANCE J. B. , NAZZAL A. I. , HUANG T. C. , ORTIZ C. 
Published: May 2016

AbstractThe title compound has been prepared by heating a stoichiometric mixture of La2O3, SrCO3, and CuO in an oxygen stream at 900 °C for 6 h, followed by 3 cycles of regrinding, firing in flowing oxygen at 1025 °C (16 h), and cooling slowly to room temp. (over 6 h).
ChemInform Abstract: A Simple Model for the Kinetics of Dissociative Electron Transfer in Polar Solvents. Application to the Homogeneous and Heterogeneous Reduction of Alkyl Halides.
Authors: SAVEANT J.‐M. 
Published: May 2016

AbstractThe model developed on the basis of a Morse curve description of the potential energy surfaces for bond breaking shows a satisfactory agreement between the experimental data and the predictions of the theory for the two reaction types studied: R‐X + e‐ → R· + X‐ (electrochemical) and R‐X + A·‐ → R· + X‐ + A (homogeneous; A being an organic molecule such as benzo‐, naphtho‐, phthalonitrile, anthracene, phenanthridine etc.).
ChemInform Abstract: Reaction of Disubstituted Aromatic Compounds with Styrene.
Authors: GRUSHIN A. I. , GRIGOR'EV V. V. , PROKOF'EV K. V. , KOZLOVA N. M. 
Published: May 2016

AbstractThe Friedel‐Crafts reaction between styrene (I) and the benzene derivatives (II) affords the 1‐aryl‐1‐phenylethanes (IIIa)‐(IIIb).
ChemInform Abstract: Chlorocarbonylation of Pentacyclo(6.3.0.02,6.03,10.05,9)‐undecane.
Authors: PETRENKO A. E. , ALEKSANDROV A. M. , SOROCHINSKII A. E. , KUKHAR' V. P. 
Published: May 2016

AbstractThe title compound (I) is converted to the 4‐methoxycarbonyl derivative (IV).
ChemInform Abstract: Oxidation of the α‐Ketol and Enone Derivatives of Cyclohexanone by Tetrazolium Salts.
Authors: JASICZAK J. 
Published: May 2016

Abstract2‐Hydroxycyclohexanone (I) is oxidized with tetrazolium salts to give 1,2‐cyclohexanedione (II) which is converted to the dioxime (III).
ChemInform Abstract: Synthesis of δ2‐Isoxazolines Containing Indole Fragments.
Authors: SHVEKHGEIMER G. A. , KELAREV V. I. , SHVEDOV V. I. , DYANKOV L. A. 
Published: May 2016

AbstractBenzonitrile oxides, prepared in situ from the hydroxamic acid chlorides (I), react with the dipolarophiles (II) to give the indolylisoxazolines (III).
ChemInform Abstract: Synthesis of Linearly Fused 2,8‐Dialkyl‐4,6‐dioxo‐4H,6H‐benzo(1,2‐b:5,4‐b′)dipyrans.
Authors: REDDY K. C. , SRIMANNARAYANA G. 
Published: May 2016

AbstractThe title compounds (III) are synthesized as shown (yields given in mg).
ChemInform Abstract: Nitrile Sulfides. Part 7. Synthesis of (1)Benzopyrano(4,3‐c)isothiazoles and Isothiazolo(4,3‐c)quinolines.
Authors: BROWNSORT P. A. , PATON R. M. 
Published: May 2016

AbstractThe nitrile sulfides (III), generated from (I), react with (II) and (V) to yield the products (IV) and (VI) arising from 1,3‐dipolar cycloaddition.
ChemInform Abstract: Synthesis of 2′,3′‐Dihydrospiro(benzofuran‐2(3H),4′(1′H)isoquinoline)s. A Novel Heterocyclic Ring System.
Authors: KLEIN J. T. , DAVIS L. , EFFLAND R. C. 
Published: May 2016

AbstractThe 4‐oxotetrahydroisoquinolinecarboxylic acid esters (I) are hydrolyzed and decarboxylated to give the isoquinolones (II) which react with the benzyl chlorides (III) in the presence of Mg to yield the carbinols (IV).
ChemInform Abstract: Synthesis and Spectra of Some Triazolo and Triazinophthalazines of Possible Hypotensive Activity.
Authors: ALLAH H. M. F. , SOLIMAN R. 
Published: May 2016

Abstract1‐Hydrazinophthalazine (I) is cyclized via the hydrazides (III) to give the triazolophthalazines (IV).
ChemInform Abstract: The Rearrangement of a Tetrahydrobiphenylene Derivative to a Bridged Benzocycloheptene.
Authors: BARTON J. W. , HOWARD J. A. K. , SHEPHERD M. K. , STRINGER A. M. 
Published: May 2016

AbstractAlkaline hydrolysis of the adduct (I), obtained from benzocyclobutene and 2H‐pyran‐2‐one, gives the acid (II).
ChemInform Abstract: Novel Approach to Ketene Aminals. Addition Reaction of β‐Diketones and β‐Keto Esters with Monosubstituted Cyanamides Catalyzed by Nickel Acetylacetonate.
Authors: DOROKHOV V. A. , GORDEEV M. F. , DEM'YANETS Z. K. , BOGDANOV V. S. 
Published: May 2016

AbstractCoupling of the β‐dicarbonyl compounds (I) with the cyanamides (II) gives the diaminomethylene‐β‐dicarbonyl derivatives (III).
ChemInform Abstract: Derivatives of 1‐Phenyl‐1,3‐dihydro‐2λ5‐benzophospholic Acid.
Authors: FLUCK E. , RIEDEL R. 
Published: May 2016

AbstractStarting with the isophosphindoline (Ia), the derivatives (Ib) ‐ (Id) are prepared by nucleophilic displacement of the hydroxy group.
ChemInform Abstract: Organometallic Coordination Chemistry of Aluminum. Synthesis and Molecular Structure of (Al(CH3))2(C8H20N6)(Al(CH3)2)2: A Novel Example of a Neutral Organoaluminum Complex Containing Two Five‐Coordinate Aluminum Atoms in Square Pyramidal Environments.
Authors: ROBINSON G. H. , SANGOKOYA S. A. 
Published: May 2016

AbstractThe reaction of the triamine (I) with an excess of AlMe3 (II) yields a quantitative amount of the title complex (III).
ChemInform Abstract: Synthesis of a Heterobimetallic Dihydride by the Addition of a Rhenium Dihydride to a Platinum(0) Complex.
Authors: CASEY C. P. , RUTTER E. W. JUN. , HALLER K. J. 
Published: May 2016

AbstractThe Re complex (I) reacts with the Ir complex (II) to produce the derivatives (III) and (IV).
ChemInform Abstract: 1,1′‐Polymethylenebiscarbocyanines of the Indoline and Quinoline Series with Two Symmetrical Non‐Conjugated Chromophores.
Authors: MUSHKALO I. L. , SOGULYAEV YU. A. 
Published: May 2016

AbstractThe bis‐indocarbocyanine dyes (III) and the bis‐quino(4)‐carbocyanine dyes (VI) are prepared.
ChemInform Abstract: Simple Synthesis of Cordiachrome B, (IX), a Terpenoid Benzoquinone from Cordia millenii.
Authors: WATABE T. , HOSODA Y. , OKADA K. , ODA M. 
Published: May 2016

AbstractThe Diels‐Alder reaction of the thermolytic intermediate (II) with the cyclohexenone (V) is the key step in the synthesis.
ChemInform Abstract: Synthesis of Condensed Tannins. Part 20. Cycloconformations and Conformational Stability Among Derivatives of “Angular” Tetraflavanoid Profisetinidins.
Authors: BRANDT E. V. , YOUNG D. A. , FERREIRA D. , ROUX D. G. 
Published: May 2016

AbstractConformational analysis of tridecamethyl ether tetraacetates of two natural (e.g.
ChemInform Abstract: Vitamin D and Related Compounds. Part 31. Photochemistry of Estra‐5,7‐dien e‐3β,17β‐diol 17‐Acetate and Its 9,10‐seco Isomer, 10‐Demethyl Analogues of Pro‐ and Previtamin D. Part 1. “Reversible” Isomerization Reactions.
Authors: KOOLSTRA R. B. , CORNELISSE J. , JACOBS H. J. C. 
Published: May 2016

AbstractIrradiation of the monoacetate (I) leads to isomerization, including conrotatory ring opening to give (II)‐(IV) or disrotatory ring closure to stereoselectively yield the new bicyclohexene (V) which reconverts thermally into (I) even at 20 °C. After prolonged irradiation the formation of a further product (VI) is discovered.
ChemInform Abstract: Influence of Copper on the Transformation of Ferrihydrite, 5 Fe2O3·9 H2O (I), into Crystalline Products in Alkaline Media.
Authors: CORNELL R. M. , GIOVANOLI R. 
Published: May 2016

AbstractIn alkaline media, (I) slowly transforms into goethite, α‐FeO(OH) (II), and haematite, α‐Fe2O3 (III).
ChemInform Abstract: A New Superconductive (Ln)Ba2Cu3O6.85 “Cocktail” Phase (Ln: Y, Nd, Sm, Eu and Yb).
Authors: MILLET P. , ENJALBERT R. , GALY J. , FAULMANN C. , CASSOUX P. , RAKOTO H. , ASKENAZY S. 
Published: May 2016

AbstractThe new high temp. superconductor Y0.2Nd0.2Sm0.2Eu0.2Yb0.2Ba2Cu3O6.85 is prepared by annealing mixtures of the corresponding oxides and BaCO3 in air (950 °C, 12 h).
ChemInform Abstract: Synthesis and Crystal Structure of (NH4)3(RhCl6)·H2O, the Product of the Reaction Between Rhodium Chloride and L‐Asparagine.
Authors: BUKANOVA A. E. , SERGIENKO V. S. , SIDOROVA T. P. , BELAN V. N. , SHUBOCHKIN L. K. , PORAI‐KOSHITS M. A. 
Published: May 2016

AbstractThe title compound is prepared in 52% yield from RhCl3·4 H2O and L‐asparagine in 10% HCl solution.
ChemInform Abstract: Reactions of Unsaturated Compounds. Part 135. Addition of Acetylacetone and Acetoacetic Ester to Enyne Hydrocarbons in the Presence of Mercury Acetate.
Authors: DAVTYAN S. ZH. , PANOSYAN G. A. , KINOYAN F. S. , BADANYAN SH. O. 
Published: May 2016

AbstractIn the presence of Hg(OAc)2 the enynes (I) undergo chemoselective and regiospecific reactions with sodium acetylacetonate (II) to afford the 1,3‐diketones (III) in high yields after demercuration.
ChemInform Abstract: 3,3,6,6‐Tetramethylcyclohexyne.
Authors: SANDER W. , CHAPMAN O. L. 
Published: May 2016

AbstractBest yields of the title compound (II) are obtained at 370 °C/10‐6 torr and trapping in argon at 12 K. At higher pressure or on warming trapped (II) to over 45 K, the dimer (III) is formed accompanied by some CH2=CH2 and butatriene (IV).
ChemInform Abstract: The Reaction of 1,1‐Dimethoxyethylene with Bridgehead Enones. A Direct Approach to the Taxane Skeleton.
Authors: KRAUS G. A. , THOMAS P. J. , HON Y. S. 
Published: May 2016

AbstractThe bicyclic enones, generated from the bromobicyclo(3.3.1)nonanones (I), react with ketene dimethyl acetal (II) to produce the cycloadducts (III).
ChemInform Abstract: The Aza‐di‐π‐methane Rearrangement of O‐Acetyl 2,2‐Dimethyl‐4,4‐diphenylbut‐3‐enal Oxime.
Authors: ARMESTO D. , HORSPOOL W. M. , LANGA F. 
Published: May 2016

AbstractPhotolysis of the butenal oxime acetate (I) results in cyclization, forming the cyclopropanes (II) and (III).
ChemInform Abstract: Cycloaddition of Dihaloketenes with Trimethylsiloxycycloolefins and Fluorination of the Products.
Authors: HABIBI M. H. , SAIDI K. , SAMS L. C. 
Published: May 2016

AbstractDihaloketenes, generated in situ by dehalogenation of the acetyl chlorides (I) with activated zinc, react with the silylated cycloolefins (II) to give the cycloadducts (III).
ChemInform Abstract: 1,2‐Derivatives of Acenaphthene. Part 6. Synthesis and Properties of 4‐, 3,5‐, 5,6‐ and 3,5,6‐Bromo Derivatives of Acenaphthene‐1,2‐diol.
Authors: ANIKIN V. F. , LEVANDOVSKAYA T. I. , GIL'EN KH. , IVANOV E. I. 
Published: May 2016

AbstractThe title compounds (VI) are prepared as shown.
ChemInform Abstract: H2‐Antihistaminics. Part 37. H2‐Antagonistic Activity of Impromidine Analogous Cyanoguanidines.
Authors: ELZ S. , SCHUNACK W. 
Published: May 2016

AbstractReaction of the aminoalkyl imidazolylmethyl sulfides (I) with the imidocarbonate (II) yields the isoureas (III).
ChemInform Abstract: A New Facile Diastereoconversion of 2‐Amino Alcohols Involving a Novel Cyclocarbamation.
Authors: KANO S. , YOKOMATSU T. , IWASAWA H. , SHIBUYA S. 
Published: May 2016

AbstractThe N‐protected amino acids (I) are converted to the N‐methoxy amides (III) which react with the organometallic compounds (IV) to form the α‐amino ketones (V).
ChemInform Abstract: Liquid‐Crystalline Imidazo(2,1‐b)‐1,3,4‐thiadiazoles. Part 1. Synthesis, Mesomorphic and Spectral Characteristics of 2,6‐Disubstituted Imidazo(2,1‐b)‐1,3,4‐thiadiazoles.
Authors: TORGOVA S. I. , ABOLIN A. G. , KARAMYSHEVA L. A. , IVASHCHENKO A. V. 
Published: May 2016

AbstractThe novel title compounds (V) form smectic mesophases over a wide range of temperature.
ChemInform Abstract: Substituted 1,3,4‐Thiadiazoles with Anticonvulsant Activity. Part 4. Amidines.
Authors: CHAPLEO C. B. , MYERS P. L. , SMITH A. C. B. , STILLINGS M. R. , TULLOCH I. F. , WALTER D. S. 
Published: May 2016

AbstractThe thiadiazolylamidines (V) are obtained by reaction of the thiadiazolylamines (I) with the imidate hydrochlorides (II) followed by aminolysis of the crude imidates (III).
ChemInform Abstract: Synthesis, Binding Studies, and Structure‐Activity Relationships of 1‐Aryl‐ and 2‐Aryl(1)benzopyranopyrazol‐4‐ones, Central Benzodiazepine Receptor Ligands.
Authors: COLOTTA V. , CECCHI L. , FILACCHIONI G. , MELANI F. , PALAZZINO G. , MARTINI C. , GIANNACCINI G. , LUCACCHINI A. 
Published: May 2016

AbstractThe arylhydrazones (III), derived from the acetylhydroxycoumarin (I), are cyclized with p‐toluenesulfonic acid in refluxing xylene to give the benzopyranopyrazoles (IV).
ChemInform Abstract: 2,4‐Diamino‐5‐benzylpyrimidines and Analogues as Antibacterial Agents. Part 9. Lipophilic Trimethoprim Analogues as Antigonococcal Agents.
Authors: ROTH B. , BACCANARI D. P. , SIGEL C. W. , HUBBELL J. P. , EADDY J. , KAO J. C. , GRACE M. E. , RAUCKMAN B. S. 
Published: May 2016

AbstractAnalogues of the antigonococcal agent trimethoprim (VII) are prepared by coupling uracil (I) with amines such as (II) followed by conversion of the dichloride (IV) and amination, yielding the diamine (VI).
ChemInform Abstract: A Novel Class of Potential Central Nervous System Agents. 3‐Phenyl‐2‐(1‐piperazinyl)‐5H‐1‐benzazepines.
Authors: HINO K. , NAGAI Y. , UNO H. , MASUDA Y. , OKA M. , KARASAWA T. 
Published: May 2016

AbstractThe benzazepines (I), prepared by ring expansion of the corresponding fused cyclohexanone oximes, are converted to the dichlorides (II) and then coupled with the amines (III) to give the piperazinyl derivatives (IV).
ChemInform Abstract: 1,1‐Bis(trimethylsiloxy)‐1,3‐butadiene and 4‐Trimethylsilyl‐2‐butenoate Trimethylsilyl Ester: Preparations and Reactions with Benzaldehyde.
Authors: BELLASSOUED M. , ENNIGROU R. , GAUDEMAR M. 
Published: May 2016

AbstractThe silyl crotonate (III) is deprotonated and coupled with chlorotrimethylsilane (II) in the presence of various lithium amides (I) to produce the ketene disilyl acetal (IV).
ChemInform Abstract: Thiophosphorosulfenyl Bromides and Iodides. Synthesis and Characterization.
Authors: KATO S. , MIN S. , BENIYA Y. , ISHIDA M. 
Published: May 2016

AbstractThe diphenyltin bis(dithiophosphates) (I) react with N‐bromo‐ or N‐iodosuccinimide to give the thiophosphorosulfenyl halides (II) or (III).
ChemInform Abstract: The Crystal Structures of Ph3PNPh, (Ph3PN(H)Ph) (AuI2) and of 2,3‐Bis(triphenylphosphoranimino)maleic Acid‐N‐methylimide.
Authors: BOEHM E. + , DEHNICKE K. , BECK J. , HILLER W. , STRAEHLE J. + , MAURER A. , FENSKE D. 
Published: May 2016

AbstractThe structures of the title compounds (I)‐(III) are confirmed by X‐ray analysis (space groups P21/c, P1 and P1 with Z=4, 2 and 2, respectively).
ChemInform Abstract: Synthesis and Molecular Structure of O‐(1‐Chloroisobutylideneamino) Diphenylphosphinate.
Authors: MARTYNOV I. V. , CHEKHLOV A. N. , IVANOV A. N. , EPISHINA T. A. , MAKHAEV V. D. , SOKOLOV V. B. 
Published: May 2016

AbstractThe phosphinate (III) is prepared from diphenylphosphine (I) and the dichloronitrosoisobutane (II).
ChemInform Abstract: Interactions of Dichloro‐bis(η5‐cyclopentadienyl)titanium(IV) with Nucleosides.
Authors: PNEUMATIKAKIS G. , YANNOPOULOS A. , MARKOPOULOS J. 
Published: May 2016

AbstractThe 1:1 molar reaction of the title complex (I) with the nucleosides HL (II) in MeOH leads to the formation of the isolable dicationic products (III).
ChemInform Abstract: Organoboration of Alkynylstannanes. Part 22. Exchange Reaction between a cis‐Dimethyl(chloro)stannyldiethylborylalkene and Organyltrimethylstannanes.
Authors: KERSCHL S. , WRACKMEYER B. 
Published: May 2016

AbstractThe chlorostannylbutene (I) mentioned in the title reacts with the organolithium compounds (II) to give the corresponding substituted stannanes (III).
ChemInform Abstract: Synthesis of 2‐ and 3‐Fluorotyrosine with Dilute Fluorine Gas.
Authors: CHIRAKAL R. , BROWN K. L. , FIRNAU G. , GARNETT E. S. , HUGHES D. W. , SAYER B. G. , SMITH R. W. 
Published: May 2016

AbstractFluorination of L‐tyrosine (I) results in the formation of 3‐fluoro‐L‐tyrosine (II), while fluorination of the diacetylated ester (III) yields a mixture of (II) and 2‐fluoro‐L‐tyrosine (IV) after hydrolysis.
ChemInform Abstract: The Enzymatic Conversion of Exomethylene Cephalosporin C into Deacetyl Cephalosporin C and the Role of Molecular Oxygen in Cephalosporin C Biosynthesis.
Authors: BALDWIN J. E. , ADLINGTON R. M. , CROUCH N. P. , SCHOFIELD C. J. 
Published: May 2016

AbstractCell free extracts from Cephalosporium acremonium containing deacetoxy/deacetyl cephalosporin C synthetase activities are shown to convert exomethylene cephalosporin C (I) directly to deacetyl cephalosporin C (II), a precursor in the cephalosporin C (III) biosynthesis.
ChemInform Abstract: Effective Synthesis of the Chiral Components of the Sex Pheromone of the Codlin Moths Adoxophyes.
Authors: CHESKIS B. A. , MOISEENKOV A. M. 
Published: May 2016

AbstractStarting from (R)‐(I) or (S)‐(III), the enantiomers of (VII) are obtained in optically pure form.
ChemInform Abstract: Surface Modifications with Heteropoly and Isopoly Oxometalates. Part 1. Qualitative Aspects of the Activation of Electrode Surfaces Towards the Hydrogen Evolution Reaction.
Authors: KEITA B. , NADJO L. 
Published: May 2016

AbstractThe surfaces of various electrodes (Au, W, Hg, Pt, glassy carbon, graphite) are electrochemically modified using solutions of K6P2W17MoO62, K6P2W18O62, H3PW12O40, H4SiW12O40, H3PMo12O40, (NH4)6H2W12O40, or H2WO4.
ChemInform Abstract: Synthesis of Some 3‐Substituted 4(3H)‐Quinazolinone and 4(3H)‐Quinazolinethione Derivatives and Related Fused Biheterocyclic Ring Systems.
Authors: ABDEL‐MEGEED M. F. , TENIOU A. 
Published: May 2016

AbstractThe reaction of the quinazolones (Ia), (Ib) or thiones (Ic), (Id) with phenylisocyanate or ‐isothiocyanate (II) yields the compounds (III) or (IV); the compounds (VIII) are prepared from the benzoxazinone (V) or benzothiazinethione (VII) with semicarbazide (VIa) or thiosemicarbazide (VIb).
ChemInform Abstract: Nickel(0)‐Promoted Cyclization of Enynes with Isocyanides: A New Route to Polycyclic Cyclopentenone Skeletons.
Authors: TAMAO K. , KOBAYASHI K. , ITO Y. 
Published: May 2016

AbstractThe title reaction between the enynes (I) and the isocyanides (II) or (V) affords the corresponding iminocyclopentenes, e.g. (III) and (IV), which may be hydrolyzed to the corresponding cyclopentenones such as (VI) and (VII).
ChemInform Abstract: A New, Convenient Synthesis of Monoaroylpyrazines via Homolytic Substitution.
Authors: HEINISCH G. , LOETSCH G. + 
Published: May 2016

AbstractRadical‐induced acylation of 2‐pyrazinecarboxylic acid (I) with the benzaldehydes (II) yields the 5‐aroylpyrazinecarboxylic acids (III).
ChemInform Abstract: Amide Bond Surrogates: Pseudopeptides and Macrocycles.
Authors: SPATOLA A. F. , DARLAK K. 
Published: May 2016

AbstractUsing both direct (ψ‐condensation) and indirect (preformed pseudodipeptide) solid phase approaches, new cyclic enkephalin analogues (I), (II) are prepared with thiomethylene as an amide bond surrogate in the interior portion of the molecule.
ChemInform Abstract: Synthesis and Biological Activity Test of the Pheromone of the Asiatic Leafroller Moth.
Authors: KANG S.‐K. , KU M.‐S. , NO K. , LEE J.‐O. 
Published: May 2016

AbstractTwofold chain‐elongation of (I) yields the alkyne (IV), which is converted either to the (Z)‐ or (E)‐tetradecenyl acetates (VI) or (VIII).
ChemInform Abstract: General Trends Observed in the Substituted Thiophosphate Family. Synthesis and Structure of AgScP2S6 (I) and CdFeP2S6 (II).
Authors: LEE S. , COLOMBET P. , OUVRARD G. , BREC R. 
Published: May 2016

Abstract(I) and (II) are prepared by annealing stoichiometric mixtures of the elements at 600 °C (sealed quartz tube, 2 weeks, yields not given).
ChemInform Abstract: Surface Acidity of the Layered Pyrophosphates of Tetravalent Ti, Zr, Ge, and Sn and Their Activity in Some Acid‐Catalyzed Reactions.
Authors: RAMIS G. , BUSCA G. , LORENZELLI V. , LA GINESTRA A. , GALLI P. , MASSUCCI M. A. 
Published: May 2016

AbstractLayered MP2O7 compounds (M: Ti, Zr, Ge, Sn) are prepared by thermal dehydration of the corresponding M(HPO4)2·H2O compounds and characterized by XRD, Fourier‐transform IR spectroscopy, DTA, TG, and surface area measurements.
ChemInform Abstract: Primary Ethynamines (HCCNH2, PhCCNH2), Aminopropadienone (H2NCH=C=C=O), and Imidoylketene (HN=CHCH=C=O). Preparation and Identification of Molecules of Cosmochemical Interest.
Authors: WENTRUP C. , BRIEHL H. , LORENCAK P. , VOGELBACHER U. J. , WINTER H.‐W. , MAQUESTIAU A. , FLAMMANG R. 
Published: May 2016

AbstractThe very fleeting ynamine (IIa) can be observed in the flash vacuum pyrolysis of (Ia) or (Ib) by means of IR and mass spectrometry.
ChemInform Abstract: Syntheses of α,β‐Unsaturated Ketones Starting from Vinylic and Allylic Grignard Reagents via 2‐Imidazolylmethanol Intermediates.
Authors: HAYAKAWA S. , MICHIUE T. , OKAMOTO M. , HATAKEYAMA S. , OHTA S. 
Published: May 2016

AbstractReaction of the acylimidazoles (Ia) ‐ (Id) with the Grignard compounds, derived from the vinylic bromides (II), yields the hydroxyallylimidazoles (III) which are cleaved by subsequent N‐alkylation and treatment with bases, producing the α,β‐unsaturated ketones (IV).
ChemInform Abstract: Synthesis of 1,3‐Dicarbonyl Compounds by the Oxidation of 3‐Hydroxycarbonyl Compounds with Corey‐Kim Reagent.
Authors: KATAYAMA S. , FUKUDA K. , WATANABE T. , YAMAUCHI M. 
Published: May 2016

AbstractOxidation of the 2‐substituted 3‐hydroxycarbonyl compounds (I) with N‐chlorosuccinimide ‐ dimethyl sulfide (II) (Corey‐Kim reagent) yields the 1,3‐dicarbonyl compounds (III), whereas the 2‐unsubstituted 3‐hydroxycarbonyl compounds (IV) are converted to the dimethylsulfonium methylides (V) under analogous conditions.
ChemInform Abstract: Metal‐Ion Catalysis in the Hydroxyalkylation of Phenol with Glyoxylic Acid.
Authors: HOEFNAGEL A. J. , PETERS J. A. , VAN BEKKUM H. 
Published: May 2016

AbstractMetal ions such as Ga3+, In3+, or Al3+ (or Ti4+), when used as catalysts in the title reaction, yield (III) and (IV) (56‐75% or 8%) with ortho/para ratios in the range of 1.3‐28. In the presence of divalent cations such as Cu2+, Zn2+, or Ni2+ (34‐70%) the product ratio is below 1.1.
ChemInform Abstract: Reaction Mechanism of Heteroaromatic N‐Oxides with 5‐Hexenylmagnesium Bromide.
Authors: EBERSON L. , CARDELLINI L. , GRECI L. , POLONI M. 
Published: May 2016

AbstractThe reactions of the N‐oxides (I) and (V) with the Grignard reagent (II) are studied in order to obtain an insight into the reaction mechanism (electron transfer vs.
ChemInform Abstract: An Unusual Mechanism of a Palladium‐Catalyzed Intramolecular Carbametalation. A Novel Palladium‐Catalyzed Rearrangement.
Authors: TROST B. M. , TANOURY G. J. 
Published: May 2016

AbstractTreatment of the enyne (I) with the palladium catalyst according to A) in the presence of the acetylene (II) yields the expected (2 + 2 + 2) cycloadduct (III) together with the rearrangement product (IV), whose production is explained as resulting from the formation of the intermediate (V).
ChemInform Abstract: Reactions with Cyclic Oxalyl Compounds. Part 26. The Fischer Indole Rearrangement of Sterically Hindered Systems. Part 7. Diaza(n.3.3)propellanes via Thermally Initiated Fischer Indolization.
Authors: KOLLENZ G. , THEUER R. , OTT W. , PETERS K. , PETERS E.‐M. , VON SCHNERING H. G. 
Published: May 2016

AbstractThe tricyclic pyrrolediones (V), synthesized from the cyclic ketones (I) or (VI), undergo thermal rearrangement to give the diazapropellanes (VII).
ChemInform Abstract: Phenoxy‐ and Phenylthioalkylguanidines: Synthesis and in vitro Pharmacology.
Authors: BUSCHAUER A. 
Published: May 2016

AbstractNine impromidine analogues such as (V) characterized by a phenoxy‐ or phenylthioalkyl moiety instead of the (5‐methyl‐imidazol‐4‐yl)‐methylthioethyl substituent at the guanidino group are prepared.
ChemInform Abstract: Preparation of 3‐Substituted 4,6‐Dinitroanthranils by Oxidation of Anionic σ‐Complexes of 1,3,5‐Trinitrobenzene.
Authors: KOVALENKO S. V. , ARTAMKINA G. A. , BELETSKAYA I. P. , REUTOV O. A. 
Published: May 2016

AbstractTreatment of the Meisenheimer complexes (I) with CuBr/CCl4 gives the rearomatization products (II).
ChemInform Abstract: Synthesis and Reactivity of Some Amino‐Substituted 1,2,5‐Thiadiazole 1,1‐Dioxides.
Authors: ARAN V. J. , RUIZ J. R. , DAVILA E. , ALKORTA I. , STUD M. 
Published: May 2016

AbstractThe acid‐catalyzed cyclization of sulfamide (I) and cyanogen (II) yields the thiadiazole dioxide (IIIa), whose derivatives (IIIb) and (IIIc) are obtained by amino‐exchange reactions.