bluuebunny/crossref_metadata_2025_split huggingface dataset:
ChemInform Abstract: A Reexamination of the Synthesis of Paracetamol Glucuronide, the Major Urinary Metabolite of Paracetamol in Man.
Authors: JOHNSTON D. , ANDREWS R. S. , ORMISTON R. A. 
Published: May 2016

AbstractThe title compound (V) can be efficiently prepared starting either from the (tetra‐O‐acetyl glucopyranoside)uronate (I) or (tri‐O‐acetyl glucopyranosyl bromide)‐uronate (III) via the condensation product (IV).
ChemInform Abstract: Highly Stereoselective Total Synthesis of β‐Ribofuranosylmalonate.
Authors: KATAGIRI N. , AKATSUKA H. , HANEDA T. , KANEKO C. , SERA A. 
Published: May 2016

AbstractHigh‐pressure Diels‐Alder reaction of furan (I) with the acetoxymethylenemalonates (II) gives the endo‐adducts (III) as the major products.
ChemInform Abstract: Metabolites of the Higher Fungi. Part 24. Cytochalasin N, O, P, Q, and R. New Cytochalasins from the Fungus Hypoxylon terricola Mill.
Authors: EDWARDS R. L. , MAITLAND D. J. , WHALLEY A. J. S. 
Published: May 2016

AbstractThe cytochalasins are a group of toxic fungal metabolites which show cytostatic effects.
ChemInform Abstract: Selective Excitation of Ti2+Mn2+ and Mn2+Ti2+Mn2+ Spin Clusters in MgCl2.
Authors: HERREN M. , JACOBSEN S. M. , GUEDEL H. U. + , BRIAT B. 
Published: May 2016

AbstractTi2+ and Mn2+ are simultaneously doped into MgCl2 and the Ti2+Mn2+ dimers and Mn2+Ti2+Mn2+ trimers obtained are studied by site‐selective dye‐laser spectroscopy.
ChemInform Abstract: New Rubidium Lithium Zincates: RbLiZnO2 (I) and RbLiZn2O3 (II).
Authors: BAIER R. , HOPPE R. 
Published: May 2016

AbstractPowders and single crystals of the title compounds (I) and (II) are obtained by annealing mixtures of the binary oxides (single crystals of (I): 770 °C, 56 d, closed Ag crucible; single crystals of (II): 850 °C, 28 d, closed Ni crucible).
ChemInform Abstract: On TiF3 and Hexafluorotitanates(III): Cs2K(TiF6), Rb2K(TiF6), and TiF3, with a Remark on Rb3(TiF6).
Authors: HOPPE R. , BECKER ST. 
Published: May 2016

AbstractSingle crystals of the title compounds are obtained for the first time by the redox reactions with the wall outlined in the scheme.
ChemInform Abstract: A Two Step Procedure as Improved Alternative to the Cyclocarbonylation of Allyl Halides and Acetylene Derivatives Mediated by Ni(CO)4.
Authors: CAMPS F. , COLL J. , LLEBARIA A. , MORETO J. M. 
Published: May 2016

AbstractThe alkynes (I) are coupled with allyl bromide (II) in the presence of a Pd(II) catalyst to form the 1‐bromo‐1,4‐dienes (III) which are carbonylated with nickel tetracarbonyl (IV) in the presence of methanol (V), yielding the methoxycarbonylmethylcyclopentenones (VI).
ChemInform Abstract: Attempts of Preparing Triafulvenes from 1‐Bromo‐2,2‐dichloro‐3‐methylcyclopropane.
Authors: STAEMPFLI U. + , NEUENSCHWANDER M. 
Published: May 2016

AbstractAddition of dichlorocarbene to 1‐bromopropene (I) yields only the cis‐substituted cyclopropane (III).
ChemInform Abstract: Diastereoselective Synthesis of α,γ‐Amino Alcohols by Intramolecular 1,3‐Dipolar Cycloaddition of Nitrones with Allyl Thioether Moieties and Subsequent Reductive Ring Cleavage.
Authors: AURICH H. G. , MOEBUS K.‐D. + 
Published: May 2016

AbstractThe allylthio nitrones (IV) and (VIII), derived from mercaptoacetaldehyde (I) and allyl bromide (II) or from acrolein (VI) and allyl mercaptan (VII), undergo intramolecular cycloaddition, forming the fused isoxazolidines (V) or (X) and the bridged oxathiazine derivatives (IX).
ChemInform Abstract: Formation of β‐Naphthol Derivatives in the Reaction of Homoveratroic Acid with Substituted Benzenes in Polyphosphoric Ester. Synthesis of 6‐Oxoniabenzo(a)anthracene Salts.
Authors: SHCHERBAKOVA I. V. , KUZNETSOV E. V. 
Published: May 2016

AbstractA novel reaction is observed to proceed at 75 °C between homoveratroic acid (I) and the phenol ethers (II) affording the β‐naphthol derivatives (III) instead of the 3,4‐dimethoxybenzyl aryl ketones, which are the products of the reaction between (I) and (II) at about 85 °C. Basic hydrolysis of (III) yields the free β‐naphthols (IV).
ChemInform Abstract: Stereochemical Studies on the Intramolecular Diels‐Alder Reaction of Furans with Doubly Activated Dienophiles.
Authors: HARWOOD L. M. , JONES G. , PICKARD J. , THOMAS R. M. , WATKIN D. 
Published: May 2016

AbstractThe bisfurans (II) are cleaved upon oxidation with MCPBA, yielding the Z‐enediones (V) and the bis(enediones) (VI).
ChemInform Abstract: Synthesis of Secondary α‐Methylene‐γ‐lactams.
Authors: EL ALAMI N. , BELAUD C. , VILLIERAS J. 
Published: May 2016

AbstractThree methods are described for the synthesis of the α‐methylene‐γ‐lactams (IV) or (XI): the cyclocondensation of the N‐p‐methoxyphenylaldimines (I) with the bromomethylacrylate (II) under Reformatskii conditions to give the N‐protected lactams (III) has already been reported in literature.
ChemInform Abstract: Synthesis of 2,3‐Dihydro‐1,4‐benzodioxin Derivatives. Part 1. 2‐Substituted 5(and 6)‐Sulfamoyl‐2,3‐dihydro‐1,4‐benzodioxins.
Authors: ITAZAKI H. , KAWASAKI A. , MATSUURA M. , UEDA M. , YONETANI Y. , NAKAMURA M. 
Published: May 2016

AbstractThe 6‐sulfamoyl‐2,3‐dihydro‐1,4‐benzodioxin (XII) is synthesized from the 1,2‐dihydroxybenzene derivative (I) as shown in the reaction scheme.
ChemInform Abstract: Borylation of Sulfamides, Sulfonimines and Sulfonediimines.
Authors: EINHOLZ W. , FREY G. , HAUBOLD W. 
Published: May 2016

AbstractVarious borylation reactions of the substrates (I), (VIII), or (XIV) with the boron compounds (II), (V), or (IX) as shown in the scheme yield the products (III), (VI), (X), (XII) + (XIII), (XV) or (XVI).
ChemInform Abstract: Evidence of ((OC)4Fe=Si(CH3)2·((CH3)2N)3PO) as an Intermediate of Polysilane Formation from (CH3)2SiCl2 and Na2Fe(CO)4.
Authors: ZYBILL C. , WILKINSON D. L. , LEIS C. , MUELLER G. + 
Published: May 2016

AbstractThe title compound (IV) can be isolated from the system Na2(Fe(CO)4) (I)/Me2SiCl2 (II) at ‐45 °C by addition of HMPT (III).
ChemInform Abstract: Novel Ferrocene Diesters with Liquid‐Crystal Properties.
Authors: BHATT J. , FUNG B. M. , NICHOLAS K. M. , POON C.‐D. 
Published: May 2016

Abstract1,1'‐Ferrocenedicarboxylic acid dichloride (I) is esterificated with the biphenol monoalkyl ethers (II) to give the diesters (III).
ChemInform Abstract: Ene Approach for Concurrent Control Over the Chiral Centres at C‐20 and C‐22 of Steroid Side Chains: A Highly Stereocontrolled Synthesis of (20S,22R)‐(erythro)‐22‐Hydroxy‐23,24‐acetylenic Steroid Side Chains.
Authors: MIKAMI K. , LOH T.‐P. , NAKAI T. 
Published: May 2016

AbstractThe steroidal alkene (I) is coupled with the acetylenic aldehydes (IIa) ‐ (IIc), forming the erythro‐alcohols (III) as the main products.
ChemInform Abstract: Conversions of 2′,3′‐Epoxy Derivatives of Adenosine by Cyanate and Thiocyanate Anions.
Authors: SIVETS G. G. , KVASYUK E. I. , MIKHAILOPULO I. A. 
Published: May 2016

AbstractDepending on the work‐up conditions the reaction between the ribofuranosyladenine (I) and KOCN in the presence of BF3·Et2O and crown ether affords mixtures of the xylofuranosyladenine (V) and its 5'‐methoxycarbonyl derivative (IV) or (V) as the sole product.
ChemInform Abstract: Synthesis of Spirocyclopropylcyclopentane Derivatives as Precursors for Analogues of Icosanoids.
Authors: JONES S. W. , MIDDLEMISS D. , NEWTON R. F. , SCHEINMANN F. , WAKEFIELD B. J. 
Published: May 2016

AbstractCyclopropyl analogues of prostaglandins and other icosanoids are of interest for biological and photochemical studies, because the cyclopropyl group can block metabolic pathways and affect the photochemical properties of these compounds.
ChemInform Abstract: Synthesis and Biological Evaluation of New C(4) Heterofunctionalized Monocyclic β‐Lactams Derived from Penicillin G.
Authors: MARCHAND‐BRYNAERT J. , LAUB R. , DE MEESTER F. , FRERE J.‐M. 
Published: May 2016

AbstractStarting from the thiazoline‐azetidinone (I), a useful chiral synthon derived from natural penicillin G, a variety of ca. 60 β‐lactams such as (II) possessing a thiocarbonyl or sulfonyl substituent as a potentially good leaving group are prepared by common methods and their antibiotic properties are tested; only (IIa) and (IIb) exhibit a weak antibacterial effect.
ChemInform Abstract: Synthesis and Structure of K2Au3, a New Phase in the Potassium‐Gold System.
Authors: KRIEGER‐BECK P. , BRODBECK A. , STRAEHLE J. + 
Published: May 2016

AbstractThe title compound is prepared by annealing a mixture of the elements (1000 °C, 2 h, sealed Ta‐ampoule, argon).
ChemInform Abstract: Electrical Conductivity of the Spinel CoFe2O4 Solid Solution.
Authors: LEE D. Y. , KIM D. , KIM K. H. , CHOI J. S. 
Published: May 2016

AbstractCoFe2O4 solid solutions containing up to 50 mol% CoO are synthesized and their structures are studied by XRD and Moessbauer spectroscopy.
ChemInform Abstract: Identification of a Soluble Form of Colloidal Manganese(IV).
Authors: PEREZ‐BENITO J. F. , BRILLAS E. , POUPLANA R. 
Published: May 2016

AbstractPotassium permanganate is reduced by thiosulfate in neutral aqueous solution according to the stoichiometry outlined in the scheme (experimental conditions: reductant/oxidant ratio: 0.39,(MnO4‐):4 M,(S2O32‐):2.5·10‐5‐4·10‐4 M).
ChemInform Abstract: Stereo‐ and Regioselective Palladium‐Catalyzed 1,4‐Dialkoxylation of Conjugated Dienes.
Authors: BAECKVALL J.‐E. + , VAGBERG J. O. 
Published: May 2016

AbstractThe 1,3‐dienes (I) undergo 1,4‐dialkoxylation with aliphatic alcohols such as (II) in the presence of p‐benzoquinone as an oxidant.
ChemInform Abstract: (4 + 2)Cycloaddition Reaction of Substituted 2‐Pyrones with Maleimides and Stability of the Adducts.
Authors: SHIMO T. , YOSHIMURA H. , SUISHU T. , SOMEKAWA K. 
Published: May 2016

AbstractDiels‐Alder reaction of the pyrones (I) with the maleimides (II) results in the formation of the 1:1‐endo adducts (III) or the decarboxylated 1:2‐endo‐endo adducts (IV) or a mixture of both depending on the electronic structure of the pyrones, the reaction time, and the reflux temperature.
ChemInform Abstract: Synthesis and β‐Adrenergic Antagonism of 2‐(Aryloxy)‐1‐(2‐piperidyl)ethanols.
Authors: MAULEON D. , PUJOL M. D. , ROSELL G. 
Published: May 2016

AbstractRing opening of the epoxide (I) with the sodium salts of the phenols (II) yields the aryloxyhydroxyethylpyridines (III).
ChemInform Abstract: Topical Nonsteroidal Antipsoriatic Agents. Part 2. 2,3‐(Alkylidenedioxy)naphthalene Analogues of Lonapalene.
Authors: VENUTI M. C. , LOE B. E. , JONES G. H. , YOUNG J. M. 
Published: May 2016

AbstractDiels‐Alder reaction of chloroprene (I) with the benzoquinones (II) gives the adducts (III) which are oxidized to yield the naphthoquinones (IV).
ChemInform Abstract: Synthesis of 3,6‐Dichloro‐4‐(2‐chloro‐1,1‐dimethylethyl)pyridazine.
Authors: HACKLER R. E. , DREIKORN B. A. , JOHNSON G. W. , VARIE D. L. 
Published: May 2016

AbstractThe title compound (IV), a systemic plant fungicide, is prepared by several routes.
ChemInform Abstract: Unexpected Regiochemistry in the Reaction of Benzotriazole with KBH4: Synthesis of a New Class of Poly(azolyl)borate Ligands.
Authors: LALOR F. J. , MILLER S. , GARVEY N. 
Published: May 2016

AbstractPotassium borohydride (II) reacts with molten benzotriazole (I), producing the poly(benzotriazol‐1‐yl)borate salts (III) ‐ (V).
ChemInform Abstract: Cyclic λ5σ5(σ6)P‐Derivatives of Phosphonic and Phosphinic Acid and the Hypothetical Phosphane Oxide.
Authors: BOHLEN R. , FRANCKE R. , ROESCHENTHALER G.‐V. + 
Published: May 2016

AbstractThe trifluorophospholane (I) is converted to the hydro derivatives (III), (V), and (VI) by subsequent fluorine/hydrogen exchange.
ChemInform Abstract: Organometallic Precursors to AlN: Synthesis and Crystal Structures of ((CH3)2AlNH2)3 and the Planar Species ((t‐C4H9)2AlNH2)3.
Authors: INTERRANTE L. V. , SIGEL G. A. , GARBAUSKAS M. , HEJNA C. , SLACK G. A. 
Published: May 2016

AbstractThe crystal and molecular structures of the trimeric title compounds (III) (space group P21/c, Z=4) and (V) (R3c, Z = 6) are determined by X‐ray diffraction in connection with their investigation as precursors to aluminum nitride.
ChemInform Abstract: Novel Reactions of the (BPh4)‐ Salt of the Bifunctional Complex ((triphos)Rh(S2CO))+ (triphos: MeC(CH2PPh2)3): One‐Electron Reduction, Cleavage of B‐H and B‐C Bonds, and Metathesis of CS2‐like Heteroallene Molecules.
Authors: BIANCHINI C. , MELI A. , LASCHI F. , VIZZA F. , ZANELLO P. 
Published: May 2016

AbstractThe redox properties of the complex salt (I) are studied.
ChemInform Abstract: Phosphino Sulfoxide Rhodium Complexes. Synthesis, Crystal Structure, and Catalytic Chemistry of ((2,3,5,6‐η)‐Bicyclo(2.2.1)hepta‐2,5‐diene)(P,O‐diphenyl(phenylsulfinylmeth# yl)phosphine)rhodium(I) Trifluoromethanesulfonate and Asymmetric Analogues.
Authors: ALCOCK N. W. , BROWN J. M. , EVANS P. L. 
Published: May 2016

AbstractThe α‐phosphino sulfoxide (III), prepared by coupling the aryl methyl sulfoxides (II) with diphenylchlorophosphine (I), are transformed into the cationic rhodium(I) complexes (V) and (VII).
ChemInform Abstract: Characterization and Recycle Experiments on the Dicarbonyl Triiodide Iridium(II) Intermediate in the Carbonylation of Ethanol to Propionic Acid.
Authors: PADHYE S. , YERANDE R. , PATIL R. P. , KELKAR A. A. , CHAUDHARI R. V. 
Published: May 2016

AbstractThe anionic Ir(II) species stabilized as its isochinoline salt (I) is isolated as an intermediate on the carbonylation of ethanol using IrCl3·3 H2O as a catalyst precursor with HI as a promoter in the presence of isochinoline (55 atm, 200 °C).
ChemInform Abstract: Evidence for Spontaneous, Low‐Temperature Biradical Formation from a Highly Reactive Neocarzinostatin Chromophore‐Thiol Conjugate.
Authors: MYERS A. G. , PROTEAU P. J. 
Published: May 2016

AbstractMethyl thioglycolate (II) adds to the antitumor antibiotic neocarzinostatin chromophore (I) to initially give (III), which is stable for days under argon at ‐70 °C. Intermediate (III) rapidly decays at ‐38 °C and above to produce the major products (VI) and (VII) via the monoradical (IV) and the diradical (V), resp., indicated by 2H incorporation at C‐2 and C‐6 of (VII) to the extent of 35 ±5% and at C‐2 of (VI) to the same degree.
ChemInform Abstract: Ionic Reorientations and Phase Transition in Solid IF6AsF6.
Authors: ALBERT S. , RIPMEESTER J. A. 
Published: May 2016

AbstractThe temp. dependence of the 19F static and rotating frame spin‐lattice relaxation times (T1 and T1ρ) of solid IF6AsF6 is studied in the range 213‐393 K. The results indicate the presence of a phase transition at 350 K and a supercooled high temp. phase.
ChemInform Abstract: Molecular Orbital Calculations on Oxygen Deficient YBa2Cu3O7‐x Clusters.
Authors: D'HEER J. , HOSTE S. , VAN DER KELEN G. P. 
Published: May 2016

AbstractCharge‐iterative EHMO calculations on various clusters, representing the YBa2Cu3O7‐x (0 < x < 1) superconducting material, suggest the transport of charge to occur in the CuO2 planes rather than in the CuO chains.
ChemInform Abstract: The Hydrous Niobium(V) Oxide Ion Exchanger. Part 5. Effect of Heat Treatment on the Sodium Isotopic Exchange Rates Between Hydrous Niobium(V) Oxide in Na+ Form and Aqueous Solutions.
Authors: INOUE Y. , YAMAZAKI H. , IKEDA M. 
Published: May 2016

AbstractRadiochemical measurements of the sodium isotopic exchange rates of the Nb2O5 exchanger in Na+ form indicate that the rate is controlled by particle diffusion and increases with increasing temp. of the heat‐treatment in air.
ChemInform Abstract: Kinetic Measurements of LaNi5Hx and MmNi4.15Fe0.85Hx with Constant Pressure Differentials.
Authors: JOSEPHY Y. , RON M. 
Published: May 2016

AbstractThe hydrogen desorption kinetics of the title compounds are studied in the temp. range 20‐60 °C by isothermal experiments with constant pressure differentials allowing to obtain reaction rates that depend on temp. only.
ChemInform Abstract: Hydrothermal Synthesis of Gallium Orthophosphate Crystals.
Authors: HIRANO S. , KIM P. 
Published: May 2016

Abstractα‐Quartz‐type GaPO4 single crystals are prepared by hydrothermal treatment (150‐180 °C, 14.7 MPa, 4 M H3PO4) of GaPO4 particles obtained by solid state reaction of Ga2O3 and NH4H2PO4 and the solubility of GaPO4 is measured under hydrothermal conditions over the ranges 150‐300 °C and 14.7‐44.1 MPa.
ChemInform Abstract: A New Approach to Conjugated Dienes. Synthesis of the Pheromones of Lobesia botrana and Bombyx mori.
Authors: ALEXAKIS A. , JACHIET D. 
Published: May 2016

AbstractCis‐ or trans‐configurated epoxysilanes such as (I) or (VI) can be opened regio‐ and stereospecifically by (Z)‐alkenyl cuprates in the presence of BF3·Et2O. The products, i.e. erythro or threo β‐hydroxysilanes, are transformed to (E,Z)‐ or (Z,Z)‐conjugated dienes of high stereoisomeric purity (≥ 97%) by acidic (conditions A)) or basic (conditions B)) elimination.
ChemInform Abstract: Synthesis of Terephthalic Acids Containing Polyfluoroalkyl Groups.
Authors: KUWABARA M. , MURAKAMI A. , FUKUNISHI K. , NOMURA M. , YAMANAKA H. 
Published: May 2016

AbstractBromination of the mixture of polyfluoroalkyl‐substituted 1,4‐cyclohexa‐dienes (III) and (IV), obtained by Diels‐Alder reaction of the polyfluoro‐2‐alkynoic acids (I) with isoprene (II), gives an unseparable mixture of the dibromides (V) and (VI).
ChemInform Abstract: New Skeletal Rearrangements via a Constrained Cyclopropyldicarbinyl Diradical Generated in the Photodecarbonylation of 2,4‐Diphenyltetracyclo(3.3.2.02,4.03,7)deca‐9‐ene‐6,8‐dione.
Authors: TAKAHASHI K. , MIKAMI E. , TAKASE K. , TAKAHASHI T. 
Published: May 2016

AbstractPhotolysis of the polycyclic diketone (I) gives the cleavage products (II) and (III) and the intermediate ketene (IV).
ChemInform Abstract: Reaction of Dithio‐Substituted Cinnamyllithium with Carbonyl Compounds: A Test of the HSAB Principle.
Authors: FANG J.‐M. , CHEN M.‐Y. , YANG W.‐J. 
Published: May 2016

AbstractThe cinnamyldithiane (I) is deprotonated to give the salt (III) which reacts with the carbonyl compounds (IV) to produce mixture of the α‐(V) and γ‐adducts (VI).
ChemInform Abstract: Synthesis of Medium‐Sized Cyclic Lactones: Application to the Synthesis of 15‐Pentadecanolide and Phoracantholide I.
Authors: COSSY J. , PETE J.‐P. 
Published: May 2016

AbstractThe most advantageous procedure for the synthesis of the title compounds (IVa) and (IVb) uses commercially available starting materials (I) and (III).
ChemInform Abstract: (2‐(Trimethylsilyl)ethylidene)tris(2‐methylphenyl)phosphorane, a Modified Seyferth‐Wittig Reagent for the Stereoselective Syntheses of Z‐Allyltrimethylsilanes.
Authors: IIO H. , ISHII M. , TSUKAMOTO M. , TOKOROYAMA T. 
Published: May 2016

AbstractThe tris(o‐tolyl)phosphonium iodide (I) is treated with butyllithium to form the ylide mentioned in the title.
ChemInform Abstract: Synthesis, Structure, and Reactions of 1,2,3,6‐Tetrahydro‐1,2,3,6‐diphosphadiborine Derivatives.
Authors: DRIESS M. , PRITZKOW H. , SIEBERT W. 
Published: May 2016

AbstractThe temp.‐dependent 1H NMR spectra of the title compound (IIIb) exhibit a lowered barrier of inversion at phosphorus and X‐ray structure analysis (space group P2/c, Z=2) shows, that the six‐membered ring is nonplanar and the P atoms are coordinated pyramidal.
ChemInform Abstract: Synthetic Applications of Trialkylaluminum Reagents: Alkylation and Reduction of Transition‐Metal‐Complexed π‐Hydrocarbon Ligands.
Authors: GAUDET M. V. , HANSON A. W. , WHITE P. S. , ZAWOROTKO M. J. 
Published: May 2016

AbstractThe interaction of trialkylaluminum compounds (II) or (VII) with metal complexes (I) or (VI) initially gives "liquid clathrate" phases (III) or (VIII).
ChemInform Abstract: Reactions of Germanium‐Nitrogen Compounds (Germylamines, Cyclogermazanes, and Germaimine Intermediates) with 3,5‐Di(tert‐butyl)orthoquinone.
Authors: RIVIERE‐BAUDET M. , RIVIERE P. , KHALLAAYOUN A. , SATGE J. , RAUZY K. 
Published: May 2016

AbstractThe germylamine (II) is treated with the o‐quinone (I) mentioned in the title.
ChemInform Abstract: New Layered Phases Achieved with Centered Zirconium Chloride Clusters. The Stoichiometry Zr6Cl16.
Authors: ZIEBARTH R. P. , CORBETT J. D. 
Published: May 2016

AbstractReaction of stoichiometric amounts of Zr powder, ZrCl4, NaCl, and Be flakes plus a 40% excess of NaCl at 800 °C (2 weeks) in a closed Ta container results in the new compound (I) in nearly quantitative yield.
ChemInform Abstract: Novel Lithium Tantalates and Niobates.
Authors: NALBANDYAN V. B. , SHUKAEV I. L. 
Published: May 2016

AbstractReaction between Li2CO3 and M2O5 (M: Nb, Ta) is investigated between 650 and 1150 °C. Repeated sintering of the mixtures at 950 °C affords the novel title compounds 4 Li2O·M2O5 and 5 Li2O·M2O5, whose X‐ray powder diagrams are nearly identical.
ChemInform Abstract: Boron Fluoride Promoted Cleavage of Acetals by Organocopper Reagents. Application to Asymmetric Synthesis.
Authors: NORMANT J. F. , ALEXAKIS A. , GHRIBI A. , MANGENEY P. 
Published: May 2016

AbstractIn the presence of BF3, organocopper and cuprate reagents such as (II) promote the substitution of one alkoxy group of acetals such as (I).
ChemInform Abstract: Novel Stereoselective Route to cis‐Chrysanthemic Acid.
Authors: KRIEF A. , SURLERAUX D. , FRAUENRATH H. 
Published: May 2016

Abstract2,2,5,5‐Dimethylcyclohexane‐1,3‐dione (I), prepared from dimedone and methyl iodide, reacts consecutively with potassium tert‐butoxide and bromine to form the bicyclo(3.1.0)hexanedione (II).
ChemInform Abstract: Cycloaddition of Perfluorovinyl Ethers to Dienes.
Authors: GLAZKOV A. A. , IGNATENKO A. V. , KRUKOVSKII S. P. , PONOMARENKO V. A. 
Published: May 2016

AbstractCycloaddition reaction of the perfluorovinyl ethers (I) with butadiene (II) produces the cyclobutane derivatives (III) as a mixture of stereoisomers.
ChemInform Abstract: The Synthesis of 2,3‐Disubstituted Cyclopentenones Using the Ramberg‐Baecklund Reaction in Conjunction with Organocopper Chemistry.
Authors: CASY G. , TAYLOR R. J. K. 
Published: May 2016

AbstractAn improved synthetic procedure for the preparation of 2,3‐dialkylated 2,3‐dihydrothiin‐4‐ones such as (III) is described.
ChemInform Abstract: The Chemistry of Benzotriazole. Part 9. A Conceptually New Approach to the Synthesis of Secondary Amides and Thioamides.
Authors: KATRITZKY A. R. , DREWNIAK M. , LUE P. 
Published: May 2016

AbstractThe benzotriazolyl (thio)amides (I), prepared by condensation reaction of benzotriazole (IV), aldehydes, and (thio)amides, undergo substitution reaction with the Grignard reagents (II), producing the secondary (thio)amides (III).
ChemInform Abstract: Synthesis of Aryl‐Substituted Pyridines by Liquid‐Phase Condensation of Aldehydes with Urea Catalyzed by Transition Metal Complexes.
Authors: DZHEMILEV U. M. , SELIMOV F. A. , AKHMETOV A. ZH. , FATYKHOV A. A. 
Published: May 2016

AbstractCocondensation of the (het)aromatic aldehydes (I) with butyraldehyde (II) in the presence of urea (III) and a Co(II)/triethylaluminum catalytic system gives the (het)arylpyridines (IV), together with the diethylpropylpyridine (V).
ChemInform Abstract: Preparation of New Nitrogen‐Bridged Heterocycles. Part 19. Smooth Syntheses of Thieno(3,2‐a)‐ and Thieno(2,3‐b)indolizine Derivatives.
Authors: KAKEHI A. , ITO S. , FUJII T. , MORIMOTO Y. , MATSUMOTO S. , SHIOHARA M. 
Published: May 2016

AbstractThe cyclization of the indolizines (III), having an acyl and/or cyano group at the 1‐ and 3‐positions, is examined under several alkaline conditions to yield the title compounds (IV)‐(VII) in fairly good yields.
ChemInform Abstract: Benzimidazole Condensed Ring Systems. Part 3. Synthesis of Some Substituted 2,3‐Dihydrocyclopenta‐1H‐(4′,5′:2,3)pyrido(1,2a)benzimidazole‐11‐carbonitriles.
Authors: BADAWEY E.‐S. A. M. , RIDA S. M. , SOLIMAN F. S. G. , KAPPE T. 
Published: May 2016

AbstractThe compound (III) is prepared in order to have a ring system of potential biological significance.