bluuebunny/crossref_metadata_2025_split huggingface dataset:
ChemInform Abstract: Synthesis and Crystal Structure of TiBr4, TiBr3 and Ti(AlBr4)2.
Authors: TROYANOV S. I. , RYBAKOV V. B. , IONOV V. M. 
Published: May 2016

AbstractThe known compounds TiBr4 and α‐TiBr3 and the hitherto unknown complex compound Ti(AlBr4)2 (III) are prepared.
ChemInform Abstract: Synthesis and Structure of the Novel Fluorophosphate Na5Cr(PO4)2F2.
Authors: NAGORNYI P. G. , KAPSHUK A. A. , KORNIENKO Z. I. , MITKEVICH V. V. , TRET'YAK S. M. 
Published: May 2016

AbstractCrystals of the title compound are grown by the method of spontaneous crystallization from melts in the system Na2O‐P2O5‐Cr2O3‐NaF.
ChemInform Abstract: An Efficient and General Method for the Reformatsky‐Type Reaction of Chlorodifluoromethyl Ketones with Carbonyl Compounds Giving α,α‐Difluoro‐β‐hydroxy Ketones.
Authors: KUROBOSHI M. , ISHIHARA T. 
Published: May 2016

AbstractChlorodifluoromethyl ketones such as (I) undergo the Reformatsky‐type aldol reaction with a variety of aldehydes, e.g. (II), or ketones, e.g. (IV), in the presence of acid‐washed zinc dust and CuI or AgOAc to give the corresponding title ketones.
ChemInform Abstract: Kinetics of Successive Addition of Methyloxirane (IIa) or Ethyloxirane (IIb) to Alkanethiols in the Presence of Basic Catalysts (III).
Authors: CHLEBICKI J. , CICHACZ Z. 
Published: May 2016

AbstractRate constants and activation parameters are determined for the addition reaction of oxiranes (IIa) resp. (IIb) to the resp. butyl‐(2‐hydroxypropyl) or ‐(2‐hydroxybuty) sulfides (Ia) and (Ib) (n = 1) and their resulting higher homologues (I) (n = 2‐6 and 2‐4, resp.) in the presence of the respective alcoholates (III) as the basic catalysts; a mixture of 1,2‐ and 1,3‐dibromobenzene is used as solvent (373‐403 K); higher alkyl sulfides Me‐(CH2)p‐S‐CH2‐CH(OH)‐Me + (IIa) (with p = 5, 7, and 9) are studied as well.
ChemInform Abstract: The Photolysis of 1‐Benzyloxy‐2‐pyridone and Its Methyl Derivatives. Correlation with 1H NMR‐Derived Ground‐State Conformation.
Authors: SAKURAI T. , MURAKATA Y. , INOUE H. 
Published: May 2016

AbstractExternal heavy‐atom (CH2Br2), solvent, temp., and methyl substituent effects on the fluorescence and reaction of (Ia)‐(Ic) are measured and correlated with conformations of these compounds determined by 1H NMR together with those of some reference compounds such as (IV) and (V).
ChemInform Abstract: Photoinduced Molecular Transformations. Part 104. Pathways of the Photorearrangement of Five‐Membered Cyclic Steroidal α‐Nitro Ketones to N‐Hydroxy Cyclic Imides, Cyclic Hydroxamic Acid, and Cyclic Imide.
Authors: SUGINOME H. , KUROKAWA Y. 
Published: May 2016

AbstractPhotolysis of the A‐nor‐steroidal α‐nitro ketone (I), which exists predominantly in its enol form, in the absence of oxygen produces the cyclic N‐hydroxyimide (II), and the oxime (III).
ChemInform Abstract: Sodium Perborate: A Mild and Convenient Reagent for Efficiently Oxidizing Organoboranes.
Authors: KABALKA G. W. , SHOUP T. M. , GOUDGAON N. M. 
Published: May 2016

AbstractSodium perborate oxidizes the trialkylboranes (III) and the vinylboranes (VII), which are obtained by hydroboration of the corresponding alkenes (I) or alkynes (V), to give the alcohols (IV) and the carbonyl compounds (VIII) respectively.
ChemInform Abstract: Selective Bromofluorination of Alkenes with 1,3‐Dibromo‐5,5‐dimethylhydantoin and Silicon Tetrafluoride.
Authors: SHIMIZU M. , NAKAHARA Y. , YOSHIOKA H. 
Published: May 2016

AbstractTreatment of the alkenes (I) with 1,3‐dibromo‐5,5‐dimethylhydantoin and silicon tetrafluoride results in bromofluorination to produce the vicinal bromofluorides (II).
ChemInform Abstract: Aromatic Sulfonation. Part 109. Acid‐Catalyzed Transfer Sulfonation of Anisole Using Overcrowded Polymethylbenzenesulfonic Acids.
Authors: KOEBERG‐TELDER A. , CERFONTAIN H. 
Published: May 2016

AbstractTransfer sulfonation of anisole (I) using various polymethylbenzenesulfonic acids such as (II) catalyzed by trifluoromethanesulfonic acid is described (product distributions are given in dependence on time).
ChemInform Abstract: An Improved Procedure for the Conversion of Amines to Alcohols at Low Temperature.
Authors: NIKOLAIDES N. , GANEM B. 
Published: May 2016

AbstractThe N‐trihaloacetyl‐protected amines (I), (IV), and (VI) are converted to the corresponding O‐acetates (III), (V), and (VII) by nitrosation and subsequent rearrangement of the intermediate N‐nitrosoamides.
ChemInform Abstract: A New Enantioselective Approach to the Bicyclo(4.4.0)decane and Bicyclo(4.3.0)nonane Systems.
Authors: ASAOKA M. , NISHIMURA K. , TAKEI H. 
Published: May 2016

AbstractAddition of zinc reagents (II) or (VII) to the silylketone (I) or Diels‐Alder reaction of the latter with dienes (X) or (XII) gives rise to the formation of a series of title compounds, e.g. (IV), (V), (IX), (XI) and (XIII) with high stereoselectivity.
ChemInform Abstract: Chloro‐Substituted, Sterically Hindered 5,11‐Dicarbo Analogues of Clozapine as Potential Chiral Antipsychotic Agents.
Authors: DAVIS D. A. , DE PAULIS T. , JANOWSKY A. , SMITH H. E. 
Published: May 2016

AbstractElimination of HBr from the dibromide (II), obtained by bromination of the dibenzocycloheptenone (I), followed by substitution of the second bromine with the piperazine (III), yields the enamines (IV) and (V).
ChemInform Abstract: Tetrazole Compounds. Part 4. Alkylation of 1‐Aryl‐5‐(2‐dimethylamino‐vinyl)‐1H‐tetrazoles.
Authors: FISCHER G. W. 
Published: May 2016

AbstractAlkylation of the tetrazoles (I) with dialkyl sulfates (or, slightly less effective with alkyl iodides) yields mainly 4‐substituted tetrazolium salts which can be isolated free from isomers by separation as perchlorates (III).
ChemInform Abstract: 3‐Hydroxy‐3‐methylglutarylcoenzyme A Reductase Inhibitors. Part 6. trans‐6‐(2‐(Substituted‐1‐Naphthyl)ethyl(or ethenyl))‐3,4,5,6‐tetrahydro‐4‐hydroxy‐2H‐pyran‐2‐ones.
Authors: PRUGH J. D. , ALBERTS A. W. , DEANA A. A. , GILFILLIAN J. L. , HUFF J. W. , SMITH R. L. , WIGGINS J. M. 
Published: May 2016

AbstractThe naphthylpropanals (XII) and (XIX), prepared as outlined in the reaction scheme, are transformed into the corresponding pyranones (XIII) and (XX) mentioned in the title by a literature‐known procedure.
ChemInform Abstract: Synthesis of Optically Active Cyclopenta(c)pyran‐4‐carboxylic Acid Derivatives, Building Blocks for Iridoids. An Attractive Alternative to Asymmetric de Mayo Reaction.
Authors: SATO M. , TAKAYAMA K. , SEKIGUCHI K. , ABE Y. , FURUYA T. , INUKAI N. , KANEKO C. 
Published: May 2016

AbstractThe formylacetate (I) reacts with the dimethylformamide acetal (II) to give the dimethylaminomethylene compound (III) which is hydrolyzed, yielding the hydroxymethylene analogue (IV).
ChemInform Abstract: 8‐Amino‐4‐aryl‐2‐methyl‐1,2,3,4‐tetrahydroisoquinolines: Reactions of the Amino Group via the Diazonium Salts. Synthesis and Biological Activity of Novel 8‐Substituted 4‐Aryl‐2‐methyltetrahydroisoquinolines.
Authors: ZARA‐KACZIAN E. , DEAK G. , GYOERGY L. + 
Published: May 2016

AbstractStarting from the title compounds (I) the 8‐fluoro (V), 8‐nitro (VI), 8‐chloro (VII) and 8‐hydroxy derivatives (VIII) are prepared via the isolable diazonium salts (III).
ChemInform Abstract: Addition of Picolines to Benzonitrile Oxide. A Diverging Path with 4‐Picoline.
Authors: MARINONE ALBINI F. , DE FRANCO R. , BANDIERA T. , GRUENANGER P. + , CARAMELLA P. 
Published: May 2016

AbstractThe reaction between 2‐picoline (I) or 3‐picoline (IV) and benzonitrile oxide, generated from benzhydroximic acid chloride (II), affords the biscycloadducts (III) or (V) and (VI).
ChemInform Abstract: Aromatic Lithiation Directed by the Carboxylic Acid Groups. Synthesis of 9‐Substituted Dibenzodioxin‐1‐carboxylic Acids and 6‐Substituted Phenoxathiin‐4‐carboxylic Acids.
Authors: PALMER B. D. , BOYD M. , DENNY W. A. 
Published: May 2016

AbstractRegioselective lithiation of the acids (I) and subsequent quenching with carbon dioxide followed by esterification yield the corresponding diesters (IV).
ChemInform Abstract: Synthesis and Conformational Properties of 2‐Carboxy‐15‐crown‐5 and Its Cation Complexes.
Authors: TAKAHASHI T. , MALLEN J. , LORENZO D. , KHANNA R. K. , NISHIKAWA M. , GOKEL G. W. 
Published: May 2016

AbstractThe title compound (IV) is obtained as a colorless oil.
ChemInform Abstract: Basket‐Shaped Hosts with Semi‐Flexible Handles.
Authors: SMEETS J. W. H. , VISSER H. C. , KAATS‐RICHTER V. E. M. , NOLTE R. J. M. 
Published: May 2016

AbstractThe hosts (I) and (II) form 1:1 complexes with alkali‐metal ions (clamshell or sandwich‐like structure) or with protonated aliphatic or aromatic diamines (such as 1,7‐diammoniumheptane or o‐phenylenediammonium dipicrate).
ChemInform Abstract: Novel Pentacoordinate Anionic Silicate, (o‐C6H4(SiPhF2)2F)‐,K+·18‐Crown‐6, Containing a Bent Fluoride Bridge Between Two Silicon Atoms.
Authors: TAMAO K. , HAYASHI T. , ITO Y. , SHIRO M. 
Published: May 2016

AbstractThe prepared title compound (VII) (space group P1, Z=1) is characterized by X‐ray structure analysis and NMR spectroscopic data.
ChemInform Abstract: Unprecedented Example of Four Coordination at a Vanadium(II) Center. Synthesis, Structure, and Properties of a Reactive, Nearly Planar V(II) Phenolate Complex, (V(DIPP)4(Li(THF))2) (DIPP: 2,6‐Diisopropylphenolate).
Authors: SCOTT M. J. , WILISCH W. C. A. , ARMSTRONG W. H. 
Published: May 2016

AbstractThe first example of a four‐coordinate V(II) complex (III), crystallizing in Pn with Z=2, is isolated.
ChemInform Abstract: Iron‐Promoted Nitrene‐Extrusion Reactions in 7‐Azanorbornadiene Derivatives.
Authors: SUN C.‐H. , CHOW T. J. , LIU L.‐K. 
Published: May 2016

AbstractOn the thermolysis of the 7‐azanorbornadiene‐Fe complexes (III) and (IV), (VI) and analogues, nitrene‐extrusion reactions occur in dependence on the substituents of the starting complexes and are investigated.
ChemInform Abstract: Octanuclear Heterometallic Clusters with Rhombic Dodecahedral Cores. The Synthesis, Structural Characterization, and Properties of the (Fe6S6(p‐RPhO)6(M(CO)3)2)n‐ Clusters (M: Mo, n = 3, R: Me, OMe, NMe2; M: W, n = 3, R: Me; M: Mo, n = 4, R: Me, OMe, COMe). Precursors for Synthetic Analogues for the Fe/Mo/S Site in Nitrogenase.
Authors: AL‐AHMAD S. A. , SALIFOGLOU A. , KANATZIDIS M. G. , DUNHAM W. R. , COUCOUVANIS D. 
Published: May 2016

AbstractAmong the new members (IIIa)‐(IIIc) of the prismane series prepared, the cluster (IIIa) ( P21/n, Z=4) is investigated by X‐ray diffraction.
ChemInform Abstract: Silver(I) Complexes of Dichloromethane and 1,2‐Dichloroethane.
Authors: COLSMAN M. R. , NEWBOUND T. D. , MARSHALL L. J. , NOIROT M. D. , MILLER M. M. , WULFSBERG G. P. , FRYE J. S. , ANDERSON O. P. , STRAUSS S. H. 
Published: May 2016

AbstractThe dimeric complexes (VIa) and (VIb) (space group Pbca, Z=4) linked by intermolecular Ag‐Cl and Ag‐F bonds (producing six‐coordinate Ag) and the Ag2Pd complexes (VIII) and (X) (for both P1, Z=1) are prepared and studied by solution conductimetry, by tensimetric titrations with CH2Cl2 vapor, and by IR, Raman, liq.
ChemInform Abstract: Oxidation of Coordinated Thiophene: The Preparation of Cp*Rh(tetramethylthiophene S‐oxide).
Authors: SKAUGSET A. E. , RAUCHFUSS T. B. , STERN C. L. 
Published: May 2016

AbstractTwo methods are developed for the oxidation of thiophene to give the first example of a transition‐metal thiophene S‐oxide complex, (II), which crystallizes in P212121 with Z=4.
ChemInform Abstract: Indoles, Indolenines, and Indolines. Part 5. Diastereoselective Spirocyclization of C‐(Alkyloxycarbonyl)formimines of 2‐Substituted 1H‐Indole‐3‐ethanamides (= Tryptamines): Basic Studies.
Authors: FREUND R. , MAHBOOBI S. , NOACK K. , SCHOENHOLZER P. + , BERNAUER K. 
Published: May 2016

AbstractThe title cyclization leads to compounds such as (Va), (Vb) (space group P21 with Z=2), (VII) (space group P212121 with Z=4) and (IX) which represent a spirocyclic partial structure found in many indole alkaloids.
ChemInform Abstract: The Allylic Protection Method in Solid‐Phase Oligonucleotide Synthesis. An Efficient Preparation of Solid‐Anchored DNA Oligomers.
Authors: HAYAKAWA Y. , WAKABAYASHI S. , KATO H. , NOYORI R. 
Published: May 2016

AbstractThe first efficient synthesis of solid‐anchored DNA oligomers is realized; it relies on the use of allyl and (allyloxy)carbonyl groups as protectors of internucleotide linkage and nucleoside bases, respectively.
ChemInform Abstract: Synthesis and Antiviral Activity of 3′‐Heterocyclic Substituted 3′‐Deoxythymidines.
Authors: WIGERINCK P. , VAN AERSCHOT A. , JANSSEN G. , CLAES P. , BALZARINI J. , DE CLERCQ E. , HERDEWIJN P. 
Published: May 2016

AbstractThe azidodeoxythymidine (I) is protected and reduced to give the amino derivative (III) which is coupled with the dimethoxytetrahydrofuran (IV) or the azine (VII) to give the pyrrole derivative (V) and the triazole derivative (IX) respectively.
ChemInform Abstract: ((2‐(Methylthio)phenyl)thio)methyl (MTPM): A New Protecting Group of Hydroxyl Groups Capable of Conversion to a Methyl Group.
Authors: SEKINE M. , NAKANISHI T. 
Published: May 2016

AbstractReaction of the benzodithiol‐2‐yl‐protected thymidine (I) with tributyltin hydride followed by treatment with methyl iodide (II) results in ring‐opening, forming the new MTPM‐protecting group at the primary hydroxy function of (III).
ChemInform Abstract: Low Pressure Chemical Vapor Deposition of Thin Film GeO2‐SiO2 Glasses.
Authors: RASTANI S. , REISMAN A. 
Published: May 2016

AbstractGeO2‐SiO2 glasses are prepared by CVD from SiH4 and GeH4 at different gas‐phase ratios, different temp. (250‐600 °C) and various flow rates.
ChemInform Abstract: Synthesis and Structure of the Lithium Borouranate LiBUO5.
Authors: GASPERIN M. 
Published: May 2016

AbstractLiBUO5 is obtained from the reaction between U3O8, Li2CO3, and B2O3 at 1353 K. The compound crystallizes in the monoclinic space group P21/c with Z=4.
ChemInform Abstract: Thermal Behavior of the Tetrachlorogallates(III) of Gallium, Potassium, and Indium, A(I)(GaCl4), A(I): Ga, K, In, and of Ga(AlCl4).
Authors: MEYER G. , STAFFEL T. , IRMLER M. 
Published: May 2016

AbstractAs shown by Guinier‐Simon powder XRD, three structure types must be considered to describe the polymorphism of the title ternary chlorides (synthesized by literature methods).
ChemInform Abstract: Site Selectivity in the Reaction of Si(111)‐(7·7) with Si2H6.
Authors: AVOURIS PH. , BOZSO F. 
Published: May 2016

AbstractThe reaction of silane with the (111) surface of an n‐type Si wafer in a UHV system is studied by XPS, AES, LEED, thermal desorption, UV photoemission and scanning tunneling spectroscopy.
ChemInform Abstract: A Highly Enantioselective Synthesis of 2‐Substituted Malates by Asymmetric Aldol Reaction.
Authors: KOBAYASHI S. , FUJISHITA Y. , MUKAIYAMA T. 
Published: May 2016

AbstractThe α‐keto esters (II) react with the ketene O,S‐acetal (III) in the presence of tin(II) triflate, tributylstannyl fluoride, and the chiral diamines (I) as promoters to form the optically active adducts (IV).
ChemInform Abstract: Diastereoselective Aldol Reaction of (η6‐X‐C6H4COCH3)Cr(CO)2L Complexes.
Authors: UEMURA M. , MINAMI T. , HAYASHI Y. 
Published: May 2016

AbstractThe substituted acetophenonechromium carbonyl complexes (I) and (V) are converted to boron enolates which are directly coupled with the aldehydes (II) to produce the aldol adducts (III) and (IV) or (VI) and (VII) ‐ in general with predominance of one diastereomer.
ChemInform Abstract: Remarkably Selective Formation of Macrocyclic Aromatic Carbonates: Versatile New Intermediates for the Synthesis of Aromatic Polycarbonates.
Authors: BRUNELLE D. J. , BODEN E. P. , SHANNON T. G. 
Published: May 2016

AbstractUsing optimized reaction conditions, nearly exclusively cyclic oligomers (II) are formed in the pseudo‐high dilution reaction of bis(chloroformates) (I).
ChemInform Abstract: The Structure of Products of Coupling of Arenediazonium Salts with 3‐Aminocrotononitrile Derivatives.
Authors: ELNAGDI M. H. , SADEK K. U. , TAHA N. M. , YASSIN Y. M. 
Published: May 2016

AbstractThe title products (III) and (V) of coupling are shown to be the hydrazones in (E)‐form.
ChemInform Abstract: Synthetic Utility and Mechanistic Studies of the Aliphatic Reverse Brook Rearrangement.
Authors: LINDERMAN R. J. , GHANNAM A. 
Published: May 2016

AbstractThe aliphatic reverse Brook rearrangement of trialkylsilyloxystannanes such as (IV) or (VII), generated from the aldehydes (I) or ketones (VI), is shown to be a general method for the preparation of α‐hydroxyalkylsilanes such as (V) or (VIII).
ChemInform Abstract: Highly Diastereoselective Claisen Rearrangements of N‐Silyl Ketene N,O‐Acetals Generated from Allyl N‐Phenylimidates.
Authors: METZ P. , MUES C. 
Published: May 2016

AbstractThe N‐silyl ketene N,O‐acetals (III), generated from the allyl N‐phenylimidates (I), are N‐desilylated and rearranged to yield the amides (IV) and (V).
ChemInform Abstract: Silicon‐Directed Regiocontrol in Wittig Rearrangements of Bisallyl Ethers and Allyl Propargyl Ethers.
Authors: MIKAMI K. , KISHI N. , NAKAI T. 
Published: May 2016

AbstractThe trimethylsilyl‐substituted diallyl ethers and allyl propargyl ethers (I), (III), (V), (VI), and (VIII) undergo highly regioselective silicon‐directed Wittig rearrangements, yielding the alcohols (II), (IV), (VII), and (IX).
ChemInform Abstract: The Photodecomposition of Cyclic N‐Bromo Imides: Evidence for Stereoelectronic Control in Intramolecular Hydrogen Transfer in Imidyl Radicals.
Authors: CHOW Y. L. , ZHAO D.‐C. , KITADANI M. , PILLAY K. S. , NAGUIB Y. M. A. , HO T.‐I. 
Published: May 2016

AbstractA wide range of N‐bromo imides such as (I), (III) and (VI) are photolyzed in the presence of CCl2=CH2 or other scavengers for Br· and Br2.
ChemInform Abstract: Palladium‐Catalyzed 1,4‐Arylation/Alkylation of Buta‐1,3‐diene with Halogenoarenes and Stabilized Anions.
Authors: UNO M. , TAKAHASHI T. , TAKAHASHI S. 
Published: May 2016

AbstractIn the presence of a palladium‐phosphine catalyst, buta‐1,3‐diene (I) reacts with halogenoarenes such as (II) and the anions derived from the malono derivatives (III) to give the 1,4‐arylation/alkylation products (IV) in moderate yields.
ChemInform Abstract: Electron Transfer Processes. Part 50. Reductive and Oxidative Alkylations of 1,4‐Enediones by Alkylmercury Chlorides.
Authors: RUSSELL G. A. , KIM B. H. 
Published: May 2016

AbstractThe unsaturated diesters (I), the diketone (IV), or the keto ester (VI) undergo iodine‐promoted coupling reaction with the alkylmercury chlorides (II) to give the derivatives (III), (V), or (VII) and (VIII).
ChemInform Abstract: β‐Functionalization of α,β‐Unsaturated Acetals via 1‐Alkoxyallyltriphenylphosphoranes.
Authors: KIM S. , KIM Y. C. 
Published: May 2016

AbstractIn a one‐pot procedure, the α,β‐unsaturated dimethyl acetals (I) are converted into the enol ethers (VII) and (VIII) and the acetals (IX) via reaction of the ylids, generated from the phosphonium salts (IV), with the electrophiles (V).
ChemInform Abstract: Nickel‐Catalyzed Regioselective Allylation of Allylic Alcohols.
Authors: YANAGISAWA A. , NOMURA N. , HABAUE S. , YAMAMOTO H. 
Published: May 2016

AbstractThe allylic alcohols and ethers (II) react with the dimethylallylzinc bromide (I) in the presence of a Ni(II) catalyst to form mixtures of the coupling products (III) ‐ (VI).
ChemInform Abstract: Co2(CH2=C=O)(CO)7 as an Active Intermediate in the Cobalt‐Catalyzed Alkoxycarbonylation of CH2Br2.
Authors: MIYASHITA A. , NOMURA K. , KAJI S. , NOHIRA H. 
Published: May 2016

AbstractThe cobalt ketene complex (III) mentioned in the title is prepared from dicobaltoctacarbonyl (I) and methylene bromide (II) in the presence of Zn.
ChemInform Abstract: Fluorinated α‐Oxocarboxylic Acids from Oxalic Di‐tert.‐butylester and Fluoro(halo)alkyltrimethylsilanes.
Authors: BROICHER V. , GEFFKEN D. 
Published: May 2016

AbstractIn order to study the extended applicability of the method of preparation of trifluoropyruvic acid, the pyruvic acid monohydrates (IV) are prepared via the colorless oils (III) as shown in the scheme.
ChemInform Abstract: Stereoselective Cyclization of E‐ and Z‐5,6‐Dimethyl‐8‐trimethylsilyl‐6‐octenals.
Authors: ASAO K. , IIO H. , TOKOROYAMA T. 
Published: May 2016

AbstractThe stereoisomeric ω‐silyloctenals (I) are desilylated and cyclized upon treatment with trifluoroacetic acid or Lewis acids to form the vinylcyclohexanols (II) ‐ (V) with strong predominance of the diastereomer (II).
ChemInform Abstract: Diastereoselective Synthesis of the Hydroxyethylene Dipeptide Isoster of Leu‐Val.
Authors: NISHI T. , KATAOKA M. , MORISAWA Y. 
Published: May 2016

AbstractReduction of the δ‐amino γ‐keto esters (I), followed by acid‐induced ring closure, yields mixtures of the γ‐lactones (III) and (IV).
ChemInform Abstract: Dipolar Cycloaddition Reaction of Diazoalkanes with Trimethylsilyl Substituted Alkynes. Steric Control of Regiochemistry by the Trimethylsilyl Group.
Authors: PADWA A. , WANNAMAKER M. W. 
Published: May 2016

AbstractThe sulfones (I) react with the diazopropane (II) to give the 5‐sulfonyl pyrazoles (III) which extrude nitrogen on photolysis to produce cyclopropenes (IV).
ChemInform Abstract: 1,3‐Dipolar Cycloadditions to Nitrogen‐Substituted Allenes.
Authors: BROGGINI G. , BRUCHE L. , ZECCHI G. , PILATI T. 
Published: May 2016

AbstractOn reaction with the nitrile oxide (II) the title compounds (I) (8 examples) form the monoadducts (III)‐(V) and the diadduct (VI).
ChemInform Abstract: Synthesis and Antileukemic Activity of 1‐((Quinolizidinylalkyl)amino)‐4/7‐R‐thioxanthen‐9‐ones.
Authors: BOIDO CANU C. , IUSCO G. , BOIDO V. , SPARATORE F. , SPARATORE A. 
Published: May 2016

AbstractCyclocondensation of thiosalicylic acid (I) with p‐chlorotoluene (II) in sulfuric acid gives a mixture of the thioxanthen‐9‐ones (III) and (IV).
ChemInform Abstract: An Improved and Efficient Synthesis of Quinoxalinecarboxamide 1,4‐Dioxides from Benzofuroxan and Acetoacetamides in the Presence of Calcium Salts.
Authors: STUMM G. , NICLAS H.‐J. 
Published: May 2016

AbstractWith a view to the antibacterial activity of several quinoxaline 1,4‐dioxides the title compounds of type (III) are synthesized.
ChemInform Abstract: Synthesis and Photochromic Properties of Nitro‐Substituted Spironaphthoxazines.
Authors: NEDOSHIVIN V. YU. , LYUBIMOV A. V. , ZAICHENKO N. L. , MAREVTSEV V. S. , CHERKASHIN M. I. 
Published: May 2016

AbstractThe 2‐methyleneindoline (I) is coupled with the nitrosonitronaphthol (II) to give the 7‐nitrospiro(indolinenaphthoxazine) (III).
ChemInform Abstract: Preparation and Chemistry of Some 1,5‐Diphenyl‐1λ4,2,4‐thiadiazine 1‐Oxides.
Authors: JONES S. D. , KENNEWELL P. D. , TULLEY W. R. , WESTWOOD R. , SAMMES P. G. 
Published: May 2016

AbstractGeneral methods for the preparation of a variety of the title compounds such as (V), (VII) or (IX) are described.
ChemInform Abstract: A Mesityl‐Bridged Methyleneborane.
Authors: PILZ M. , ALLWOHN J. , MASSA W. , BERNDT A. 
Published: May 2016

AbstractOxidation of the dilithium compound (I) yields (II) (space group P21, Z=2), a compound in which two B atoms are bridged by an aryl group.
ChemInform Abstract: 2,5‐Dihydroboroles and 1,3‐Dihydro‐1,3‐diboretes from 1,3‐Dienes and Alkynes by Reaction with Dichloro(diisopropylamino)borane and Alkali Metals.
Authors: BROMM D. , STALKE D. , HEINE A. , MELLER A. , SHELDRICK G. M. 
Published: May 2016

AbstractSubvalent species generated by reaction of dichloro(diisopropylamino)borane (I) with sodium/potassium alloy react in situ with the unsaturated aliphatic hydrocarbons (II) and (IV) to give the title compounds (III) and (V).
ChemInform Abstract: Oligosiloxanes with Functional Groups. Part 9. Synthesis of Substituted Vinylsiloxanes.
Authors: SONNEK G. , DRAHS E. , JANCKE H. , HAMANN H. 
Published: May 2016

AbstractStereospecific syn‐addition of the silyl ethers (II) to (I) catalyzed by H2PtCl6 and subsequent hydrolysis lead to the E‐2‐siloxanyl‐but‐2‐ene‐1,4‐dioles (IV).