bluuebunny/crossref_metadata_2025 huggingface dataset:
A climate network‐based index to discriminate different types of El Niño and La Niña
Authors: Wiedermann Marc , Radebach Alexander , Donges Jonathan F. , Kurths Jürgen , Donner Reik V.
Published: May 2016

El Niño exhibits distinct Eastern Pacific (EP) and Central Pacific (CP) types which are commonly, but not always consistently, distinguished from each other by different signatures in equatorial climate variability. Here we propose an index based on evolving climate networks to objectively discriminate between both flavors by utilizing a scalar‐valued measure that quantifies spatial localization and dispersion in global teleconnections of surface air temperature. Our index displays a sharp peak (high localization) during EP events, whereas during CP events (larger dispersion) it remains close to the values observed during normal periods. In contrast to previous classification schemes, our approach specifically accounts for El Niño's global impacts. We confirm recent El Niño classifications for the years 1951 to 2014 and assign types to those cases where former works yielded ambiguous results. Ultimately, we demonstrate that our index provides a similar discrimination of La Niña episodes into two distinct types.
Interpretation of the zebra pattern in the Jovian kilometric radiation
Authors: Zlotnik E. Ya. , Shaposhnikov V. E. , Zaitsev V. V.
Published: May 2016

The origin of a fine structure as quasi‐harmonic parallel drifting stripes of enhanced brightness (zebra pattern) in the dynamic spectrum of Jovian kilometric radiation is discussed. A possible interpretation of the observed structure based on the effect of double plasma resonance (DPR) in the Jupiter magnetosphere is analyzed. It is shown that the observed features of the zebra pattern cannot be attributed to the DPR effect at electron cyclotron harmonics. The proposed scheme consists of excitation of ion cyclotron waves at the low hybrid frequency in the ion DPR regions and succeeding coalescence of these waves with a longitudinal wave at the upper hybrid frequency. The source parameters necessary for matching the expected and observed properties of the Jupiter zebra pattern are discussed.
A Smart Superhydrophobic Coating on AZ31B Magnesium Alloy with Self‐Healing Effect
Authors: Zhang Jialei , Gu Changdong , Tong Yueyu , Yan Wei , Tu Jiangping
Published: May 2016

Superhydrophobic coatings with Cassie state can physically isolate the coating/substrate from the corrosive medium by virtue of their entrapped air‐pockets, thus providing corrosion protection. Self‐healing coatings are of interest for their ability in self‐repairing local damage caused by external factors. Such coatings with dual corrosion inhibiting function, i.e., superhydrohpobicity and self‐healing, are seldom produced. In this study, a novel chemical conversion coating (CCC) on the AZ31B magnesium alloy with dual function of superhydrophobicity and self‐healing is successfully fabricated from a Cr (III) containing deep eutectic solvent. The Cr(III) CCC is mainly composed of Cr2O3. Superhydrophobicity is achieved for the Cr(III) CCC by stearic acid modification due to its hierarchically microstructure. The smart Cr(III) CCC on the Mg alloy exhibits a great enhancement of corrosion resistance in the NaCl solution due to the proposed dual corrosion inhibiting function. The superhydrophobic effect of the coating provides the first corrosion barrier for the substrate. The second corrosion barrier can be stimulated when the superhydrophobicity is collapsed in the corrosion medium, i.e., the realization of self‐healing behavior of the coating. The formation of Cr‐based oxides or compounds caused by external factors is suggested as being responsible for the self‐healing mechanism of the smart coating.
Molten Zinc Alloys for Lower Temperature, Lower Cost Liquid Metal Batteries
Authors: Holubowitch Nicolas E. , Manek Stephen E. , Landon James , Lippert Cameron A. , Odom Susan A. , Liu Kunlei
Published: May 2016

A nontraditional liquid metal battery (LMB) is devised to address the drawbacks of molten salt‐based batteries with a simple design that does not require fragile membranes and is not limited to materials of specific densities. This battery contains coaxial, coplanar liquid Sn and Bi electrodes and a ZnCl2:KCl eutectic electrolyte. Molten Sn serves as a high‐capacity host material for depositing and stripping active Zn. In cells operating at 320 °C, the molten salt blankets the molten electrodes, isolating the half reactions while balancing charge with mobile Cl– ions. Even under exposure to ambient air and moisture, minimal capacity fade occurs during 30 days of cycling. The results indicate ZnCl2:KCl to be an excellent LMB electrolyte that functions without hermetic sealing when used at elevated temperatures. The findings contribute to the increasing interest in Zn‐based electrical energy storage with a design concept that opens the door to many unexplored materials for use in lower temperature liquid metal batteries.
Clinical characteristics of non‐convulsive status epilepticus diagnosed by simplified continuous electroencephalogram monitoring at an emergency intensive care unit
Authors: Egawa Satoshi , Hifumi Toru , Kawakita Kenya , Manabe Arisa , Nakashima Ryuta , Matsumura Hikari , Okazaki Tomoya , Hamaya Hideyuki , Shinohara Natsuyo , Shishido Hajime , Takano Koshiro , Abe Yuko , Hagiike Masanobu , Kubota Yuichi , Kuroda Yasuhiro
Published: May 2016

Aim

The present study aimed to elucidate the clinical characteristics of non‐convulsive status epilepticus (NCSE) in patients with altered mental status (AMS).

Methods

This single‐center retrospective study comprised 149 patients who were hospitalized between March 1, 2015 and September 30, 2015 at the emergency intensive care unit (ICU) of the Kagawa University Hospital (Kagawa, Japan). The primary outcome was NCSE incidence. The secondary outcome was the comparison of duration of ICU stay, hospital stay, and a favorable neurological outcome, as assessed using the modified Rankin Scale score, at discharge from our hospital between patients with and without NCSE. Favorable neurological outcome and poor neurological outcome were defined as modified Rankin Scale scores of 0–2 and 3–6, respectively.

Results

Simplified continuous electroencephalogram was used to monitor 36 patients (median age, 68 years; 69.4% males) with acute AMS; among them, NCSE was observed in 11 (30.1%) patients. Rates of favorable neurological outcome, duration of ICU stay, and hospital stay were not significantly different between the NCSE and non‐NCSE groups (P = 0.45, P = 0.30, and P = 0.26, respectively).

Conclusion

Approximately 30% of the patients with AMS admitted to emergency ICUs developed NCSE. The outcomes of AMS patients with and without NCSE did not differ significantly when appropriate medical attention and antiepileptic drugs were initiated. Simplified continuous electroencephalogram monitoring may be recommended in patients with AMS in emergency ICU to obtain early detection of NCSE followed by appropriate intervention.
Melt rheological studies of polypropylene filled with coconut water treated and untreated fly ash
Authors: Radhakrishnan S. , Kulkarni M. B. , Samarth Nikesh , Mahanwar P. A.
Published: May 2016

The melt rheology of polypropylene (PP) filled with fly ash (FA) before and after treatment with coconut water (CW) was studied for different concentration of the filler. The fly ash after coconut water treatment clearly showed additional peaks in the infrared (IR) spectra corresponding to the hydroxyl and carbonyl groups indicating good adsorption of CW on FA. The X‐ray diffraction of melt compounded PP filled with CW‐treated (CWT) FA showed large reduction of the main silica peak of FA and considerable broadening of Mullite and hematite peaks suggesting formation of fine particles by this treatment. Scanning electron microscopy (SEM) confirmed the drastic reduction of particle size in these composites. The melt rheological studies for these composites indicated considerable increase in viscosity at low filler loading for CW treated FA. The concentration dependence of melt viscosity did not follow any of the theoretical equations suggested in literature. Although, the behavior was similar to nanoparticle‐filled polymers, there were some differences especially above the critical concentration of 4.5% by volume. The frequency dependence of storage and loss modulus indicated crossover point clearly, which was greatly affected by CW treatment. The Cole–Cole plots of real and imaginary part of melt viscosity brought out the broad distribution of relaxation time for the CW treated FA. The CW treated FA melt compounded with PP gave rise to nanocomposites with uniform dispersion. However, above 4.5% by volume, there appears to be agglomerate formation along with a thin interfacial layer, which assists the melt flow even at high filler loading. © 2016 Wiley Periodicals, Inc. J. Appl. Polym. Sci. 2016, 133, 43900.
A miRNAs panel promotes the proliferation and invasion of colorectal cancer cells by targeting GABBR1
Authors: Longqiu Yang , Pengcheng Luo , Xuejie Fei , Peng Zhang
Published: May 2016

MicroRNAs (miRNAs) have been implicated in the regulation of colorectal cancer. Despite the expression of miR‐17‐92 cluster in cancer has been gradually revealed, the role of each individual miRNAs in colorectal cancer still remains unclear. We studied the impact of miR‐106a/b, miR‐20a/b, and miR‐17 of miR‐17‐92 cluster on colorectal cancer cells. Real‐time quantitative polymerase chain reactions (RT‐PCR) were used to test these five miRNAs expression in colorectal cancer cell line HCT116. 3‐(4,5‐dimethyl‐2‐thiazolyl)‐2,5‐diphenyl‐2‐H‐tetrazolium bromide (MTT) assays, Bromodeoxyuridine (BrdU), and Transwell invasion assays were used to explore the effects of these five miRNAs in colorectal cancer cells. Luciferase reporter assay, RT‐PCR, and western blotting were performed to validate the interaction of these five miRNAs with the gamma‐amino‐butyric acid type B receptor 1(GABBR1). We found that these five miRNAs were significantly upregulated in colorectal cancer samples compared with normal tissues. Forced expression of these five miRNAs significantly promoted HCT116 and HT‐29 cells proliferation and invasion. We further found that these five miRNAs function as oncogenes in colorectal cancer by specifically binding to the 3‐untranslated regions (3′UTR) of GABBR1.Furthermore, inhibition of GABBR1 could mimic the function of miRNAs in HCT116 cells, while overexpression of GABBR1 blocked the function of miRNAs‐promoted proliferation and invasion. In conclusion, miR‐106a/b, miR‐20a/b, and miR‐17 contribute to the proliferation and invasion of colorectal cancer by targeting their common target gene, GABBR1, and played a critical role in the proliferation and invasion of colorectal cancer.
ChemInform Abstract: Ion Implantation and Annealing Effects on the Superconductivity and Microstructure of BiSrCaCuO Superconducting Films.
Authors: LIN W. T. , LIN H. S. , CHU Y. L. , FANG Y. K. , WU P. T.
Published: May 2016

It is found that the superconducting onset temp., Tc (onset), of Bi2Sr2CaCu2O8 (2212) films, prepared by dc sputtering and subsequent annealing, decreases progressively with increasing ion dose (140 keV B+ implantation).
ChemInform Abstract: Electrocatalysis of Anodic Oxygen Transfer Reactions: Oxidation of Cyanide at Electrodeposited Copper Oxide Electrodes in Alkaline Media.
Authors: WELS B. , JOHNSON D. C.
Published: May 2016

CuO films are readily deposited on a rotating disk electrode (Pt/stainless steel) from alkaline solutions containing Na3Cu(CN)4.
ChemInform Abstract: Effect of Additives on Catalytic Activity of 12‐Molybdophosphoric Acid for Methacrolein Oxidation.
Authors: EGUCHI K. , YAMAMOTO S. , YAMAZOE N. , SEIYAMA T.
Published: May 2016

It is found that the addition of As5+ to H3PMo12O40 improves the selectivity to methacrylic acid (MAA) but lowers the conversion efficiency of the catalyst, whereas addition of Cu2+ improves the catalytic activity but lowers the MAA selectivity.
ChemInform Abstract: Synthesis and Characterization of Cesium Tetrachlorouranate(III) Tetrahydrate.
Authors: KARBOWIAK M. , DROZDZYNSKI J.
Published: May 2016

The new title compound (IV) crystallizes in the monoclinic system, space group P2 or Pm, Z=2.
ChemInform Abstract: Superconducting Cuprates and Related Oxides. Part 1. Solid State Preparation and X‐Ray Characterization of Selected Binary, Ternary and Quaternary Oxides
Authors: CHRISTENSEN A. N.
Published: May 2016

(e.g.
ChemInform Abstract: Competitive Pathways in Palladium‐Catalyzed Reactions of ortho‐Halogenophenols. New Syntheses of Heterocyclic Compounds.
Authors: AN Z.‐W. , CATELLANI M. , CHIUSOLI G. P.
Published: May 2016

Pd‐catalyzed reactions of ortho‐halogenophenols (I), (VI), (IX) take a different course, depending on competition between O‐H and C‐Hal bonds for the initial step, leading either to the products (IV) + (V) or (VII), (X).
ChemInform Abstract: Studies on as‐Triazine Derivatives. Part 15. Intramolecular Reverse‐Electron Demand Diels‐Alder Reaction of 1,2,4‐Triazine Derivatives.
Authors: SAGI M. , WADA K. , KONNO S. , YAMANAKA H.
Published: May 2016

The triazinecarboxylic acid (I) is converted into the acetylenic esters (IV) and (VII) which release nitrogen upon thermolysis, forming the fused pyridines (V) and (VIII) respectively.
ChemInform Abstract: 5‐8 Fused Ring Compounds. Part 5. The Conformations of Eight‐Membered Rings in 5‐8‐5 Fused Ring Compounds and Their cis‐trans Isomerization.
Authors: UMEHARA M. , HISHIDA S. , OKUDA M. , OHBA S. , ITO M. , SAITO Y. , ZEN S.
Published: May 2016

The photocycloadduct (I) of appropriate bicyclononanedione to cyclopentene undergoes isomerization under basic conditions to give (II) ( P21/n, Z=2) and (III) (P21/a, Z=4).
ChemInform Abstract: Reactions of Azo and Azoxy Sulfones with Transition Metal Complexes. Part 8. Reactions of Arylazoxy Aryl Sulfones with α,β‐Unsaturated Esters and Nitriles in the Presence of a Palladium(0) Catalyst.
Authors: KAMIGATA N. , SATOH M. , FUKUSHIMA T.
Published: May 2016

Aryl‐substituted compounds such as (III) are prepared selectively.
ChemInform Abstract: Synthesis and Chemical Transformations of 4,5‐Homosnoutene Derivatives: An Attempted New Access onto the (CH)12 Energy Hypersurface.
Authors: KIRCHMEYER S. , DE MEIJERE A.
Published: May 2016

The syntheses of the new 4,5‐homosnoutene (III) and some of its derivatives are described and their reactions towards ring enlargement to the skeleton of (IV) are investigated.
ChemInform Abstract: Chemistry of Indole Glucosinolates. Intermediacy of Indol‐3‐ylmethyl Isothiocyanates in the Enzymic Hydrolysis of Indole Glucosinolates.
Authors: HANLEY A. B. , PARSLEY K. R. , LEWIS J. A. , FENWICK G. R.
Published: May 2016

The hydrolysis of (I) proceeds via the isothiocyanate (II) yielding (III) and (IV).
ChemInform Abstract: An Approach Toward the Synthesis of 4‐Phenyl‐5‐arylimino‐δ2‐1,2,3,4‐thiatriazolines.
Authors: L'ABBE G. , FRANEK W. , TOPPET S. , DELBEKE P.
Published: May 2016

The desired title compounds (III) are unstable and decompose in situ to give the benzothiazole (IV) and the benzothiazoline (V) which results from further phenylation of (IV).
ChemInform Abstract: Thienylpyridines as a New Fluorescent Reagent. Part 1. Determination of Primary Alkylamines with 5‐(4‐Pyridyl)‐2‐thiophenecarbaldehyde Using HPLC.
Authors: NAKAJIMA R. , YAMAMOTO A. , HARA T.
Published: May 2016

The fluorescent aldehyde (III) forms non‐fluorescent Schiff bases when prim. amines such as (IV) are used.
ChemInform Abstract: Chemistry of 3‐Hydroxypyridine. Part 3. Synthesis of Substituted 3‐(Fluoro(chloro)alkoxy)pyridines from Halo‐ or Amino‐3‐hydroxypyridines.
Authors: FUSS A. , KOCH V.
Published: May 2016

Halogenated 3‐hydroxypyridines such as (I) or (IV) undergo base‐catalyzed addition reaction with fluoro olefines such as (II) to yield fluorochloroalkoxy derivatives such as (III) or (V).
ChemInform Abstract: Synthesis of Tetraleno(3,4‐c)isocoumarins and Tetraleno(3,4‐c)isoquinolones.
Authors: SRIVASTAVA J. N. , KUMAR P. , THAKUR S. N. , SAHAY L. K. , SRIVASTAVA S.
Published: May 2016

The condensation of benzoic acids such as (I) with 2‐bromo‐α‐tetralone (II) yields the ester (III) which undergoes ring‐closure to form the isocoumarin (IV).
ChemInform Abstract: Synthesis of Some Quinones of Relevance to a Synthetic Approach to Amphimedine. Crystal Structure Determination of 1‐Methylpyrido(4,3‐g)quinoline‐4,5,10‐trione 5‐N,N‐Diisopropylhydrazone.
Authors: MEGHANI P. , MILLS O. S. , JOULE J. A.
Published: May 2016

Treatment of the carboxybenzoylpyridone (I) with concentrated sulfuric acid produces the methylbenzoquinolinetrione (II).
ChemInform Abstract: Stereocontrolled Conversion of 1‐(3‐Hydroxyprop‐1‐enyl)uracil Isomers into Polyfunctional 3,9‐Propano‐ and 3,9(9,3)‐Propeno‐aza‐9H‐xanthines.
Authors: JOKIC M. , SKARIC V.
Published: May 2016

The new title compounds, such as (XI) and (XII), are prepared via the key intermediate (VIII), which undergoes two types of intramolecular cyclisation reaction yielding the cis‐compound (IX) and the trans‐product (VIII) which is elaborated to (XI) and (XII).
ChemInform Abstract: Synthesis and Heteroannulation of 3,4‐Dibenzoyl‐1‐phenyl‐2a,5‐diazabenz(cd)azulene.
Authors: ABE N. , UENO T.
Published: May 2016

Reaction of (I) with the diester (II) gives a complex mixture from which the product (IIIa) is isolated in a low yield.
ChemInform Abstract: Synthesis and Anticonvulsive Activity of Propranolol Derivatives with a Tertiary Nitrogen Atom.
Authors: LOHMANN D. , LEHMANN D. , MORGENSTERN E. , FAUST G.
Published: May 2016

The title compounds (III) and (V), synthesized by condensation of 1‐(1‐naphthoxy)‐2,3‐epoxypropane (I) with the cyclic amines, e.g. (II) or (IV), show anticonvulsive activity.
ChemInform Abstract: Disubstituted Acetaldehydes with a Phosphoryl Group in the Japp‐Klingemann Reaction.
Authors: BUZYKIN B. I. , SOKOLOV M. P. , PAVLOV V. A. , IVANOVA V. N. , CHERTANOVA L. F. , ZYABLIKOVA T. A.
Published: May 2016

The dialkoxyphosphorylhaloacetaldehydes (I) are coupled with diazonium salts, prepared in situ from the anilines (II), to give the phosphorylhydrazonoyl halides (IV).
ChemInform Abstract: Prototropic and Phosphorotropic Migration in Phosphorylated 2‐Azaallylic Systems. Part 6. Reaction of N‐Benzyl‐4‐nitrobenzimidoyl‐ and 4‐(4‐Nitrobenzyl)benzimidoyl Chloride with Triphenylphosphine and Amidophosphites.
Authors: ONYS'KO P. P. , KIM T. V. , KISELEVA E. I. , PROKOPENKO V. P. , SINITSA A. D.
Published: May 2016

Both benzimidoyl chlorides (I) and (V) react with triphenylphosphine (II) to give a mixture of the isomeric phosphonium salts (III) and (IV).
ChemInform Abstract: Reaction of P(III) Acid tert‐Butyl Esters and Ester Amides with Phenyl Isothiocyanate.
Authors: GAZIZOV T. KH. , CHUGUNOV YU. V. , SAL'KEEVA L. K.
Published: May 2016

Reaction of the phosphites (I) with phenyl isothiocyanate (II) under mild conditions leads to the formation of the thiocarbamoylphosphonates (III).
ChemInform Abstract: Reaction of Alkinylthiophosphinous and Phosphonous Acid S‐Esters with Nitrilimines.
Authors: NAMESTNIKOV V. I. , TRISHIN YU. G. , TAMM L. A. , CHISTOKLETOV V. N.
Published: May 2016

The phosphinites (I) and (IV) or the phosphonites (VI) and (VIII) are coupled with nitrilimines, generated in situ from hydrazonyl halides such as (II), to give the diazaphosphorines (III), (V), (VII), and (IX) respectively.
ChemInform Abstract: Direct Approaches to Zinc Polychalcogenide Chemistry: ZnS6(N‐MeIm)2 and ZnSe4(N‐MeIm)2.
Authors: DEV S. , RAMLI E. , RAUCHFUSS T. B. , STERN C. L.
Published: May 2016

N‐Methylimidazole suspensions of zinc exhibit particularly well behaved reactivity toward sulfur yielding the hexasulfide (III) (space group P1, Z=2).
ChemInform Abstract: Reactions of Coordinated Ligands. Part 6. Stabilization of RP(OH)2, RPHNEt2, and RPHCl as Ligands in (CO)5ML.
Authors: DIEMERT K. , HINZ A. , KUCHEN W. , LORENZEN D.
Published: May 2016

Starting with Cr complexes of the type (I) new complexes of the type (II), (III), (IV), and (V) are obtained according to the scheme.
ChemInform Abstract: Oxidative Addition of Organic Halides to (η‐C5H5)3U(THF) (THF: Tetrahydrofuran). A Convenient New Synthesis of Triscyclopentadienyl Uranium(IV) Hydrocarbyl Complexes.
Authors: VILLIERS C. , EPHRITIKHINE M.
Published: May 2016

The THF title complex (I) reacts with organic halides e.g. (II) to give equimolar mixture of organyl U(IV) compounds and U(IV) halides such as (III) and (IV).
ChemInform Abstract: Synthesis, Structure, and Electrochemical Properties of Mixed‐Ligand Iron‐Sulfur Cubane Clusters with Two Cp* and Two Dithiolene Ligands (Cp* = η‐C5H5, η‐C5Me5).
Authors: INOMATA S. , TOBITA H. , OGINO H.
Published: May 2016

The reaction of the complexes (I) with S8 and the acetylene (II) leads to the first synthesis of new mixed‐ligand, homometallic metal‐chalcogen cubane clusters such as (III).
ChemInform Abstract: Redox Regulation Based on the pH‐Dependent Hydrolysis of 2‐Pyridinecarboxaldehyde Coordinated to Ruthenium(II).
Authors: BLAHO J. K. , GOLDSBY K. A.
Published: May 2016

The reversible hydrolysis of 2‐pyridinecarboxaldehyde coordinated to Ru(II) (cf.
ChemInform Abstract: Comparative Studies on Reactions of α,β‐ and β,γ‐Unsaturated Amides and Acids with Nickel(0), Palladium(0), and Platinum(0) Complexes. Preparation of New Five‐ and Six‐Membered Nickel‐ and Palladium‐Containing Cyclic Amide and Ester Complexes.
Authors: YAMAMOTO T. , SANO K. , OSAKADA K. , KOMIYA S. , YAMAMOTO A. , KUSHI Y. , TADA T.
Published: May 2016

The zerovalent Ni complex (I) forms with α,β‐unsaturated amides and acids nickel‐containing five‐membered cyclic amide and ester complexes, which are mainly polymeric.
ChemInform Abstract: Solubilizing the Thallium‐Platinum Unit of Tl2Pt(CN)4. Preparation and Use of a New Crown Ether/Phosphine Hybrid Ligand for Linking Main‐Group and Transition‐Metal Ions.
Authors: BALCH A. L. , ROWLEY S. P.
Published: May 2016

The pseudooctahedral monomeric complex Tl2Pt(CN)4 containing monocoordinate Tl+ dissociates into Tl+ and Pt(CN)42‐ when dissolved in polar solvents (H2O, DMSO).
ChemInform Abstract: Effect of a Neighbouring Methoxy Group upon the Course of Acid‐Catalysed Cleavage of a Steroidal Epoxyketone.
Authors: MORRISON G. A. , TIDESWELL J. A. , WILKINSON J. B.
Published: May 2016

It is shown, that the 3‐methoxy group has a profound effect upon the cleavage of the oxirane ring in steroids.
ChemInform Abstract: Synthesis and in vivo Antitumor and Antiviral Activities of 2′‐Deoxyribofuranosyl and Arabinofuranosyl Nucleosides of Certain Purine‐6‐sulfenamides, ‐sulfinamides and ‐sulfonamides.
Authors: REVANKAR G. R. , HANNA N. B. , RAMASAMY K. , LARSON S. B. , SMEE D. F. , FINCH R. A. , AVERY T. L. , ROBINS R. K.
Published: May 2016

The amination products (III) from the thiopurines (I) are oxidized to the corresponding (R,S)‐sulfoxides (IV) or sulfones (V).
ChemInform Abstract: The Synthesis of Carbapenem and Carbacephem Derivatives by a Combination of 4CC with the Chemistry of Oxazoles and N‐Boc Carbonamides.
Authors: NEYER G. , ACHATZ J. , DANZER B. , UGI I.
Published: May 2016

The diphenyloxazolylaminopentanoic acid (VIII), prepared from the propionic acid (I), is cyclized to give the azetidinone (XI).
ChemInform Abstract: Synthesis of Marine Toxins. A Biomimetic Approach to the Novel Spirobenzoquinonefuran Stypoldione.
Authors: BEGLEY M. J. , FISH P. V. , PATTENDEN G. , HODGSON S. T.
Published: May 2016

The spiro unit (VI), present in the natural product stypoldione (VII), shows growth inhibition of mouse leukaemia cells as well as (VII).
ChemInform Abstract: Silicon Dioxide Deposition by Atmospheric Pressure and Low‐Temperature CVD Using TEOS and Ozone.
Authors: FUJINO K. , NISHIMOTO Y. , TOKUMASU N. , MAEDA K.
Published: May 2016

It is demonstrated that high quality SiO2 films can be deposited on thermally grown oxide, silicon, and aluminum steps by atmospheric CVD at 400 °C using a mixture of (EtO)4Si and O3 as the source.
ChemInform Abstract: Comparative Study of the Passivity and the Breakdown of Passivity of Polycrystalline Iron in Different Alkaline Solutions.
Authors: ALBANI O. A. , GASSA L. M. , ZERBINO J. O. , VILCHE J. R. , ARVIA A. J.
Published: May 2016

Combined voltammetric and ellipsometric measurements in 0.04 M NaOH and saturated Ca(OH)2 solutions with addition of chloride salt of concentrations up to 1 M indicate that the initial reactions of Fe(OH)2 formation at the inner part of the passive layer level (Fe3O4) are only slightly influenced by either the cation or the presence of Cl‐ in solution, whereas at the outer part of the passive layer (hydrous FeOOH), where Fe2+/F3+ redox reactions take place, a large influence of Na+, Ca2+, and Cl‐ is observed.
ChemInform Abstract: Hydrogenation Activity and Surface Composition of Perovskite‐Type Mixed Rhenium Oxides.
Authors: RYASHENTSEVA M. A. , DULOV A. A. , ABRAMOVA L. A. , TKACHENKO O. P. , FOMICHEV V. V. , VETROV A. E.
Published: May 2016

Perovskite‐type compounds of composition A4MRe2□O12 (A: Ba, Sr; M: Co, Ni; □: vacancy in the cation lattice) are prepared (solid state reaction of metallic Re and the corresponding carbonates or oxides, ≦ 1100 °C) and shown to have high catalytic activity for the hydrogenation of benzene.
ChemInform Abstract: Structure and Reactivity of Ammonia Synthesis Catalysts Derived from CeRu2 Precursors: A Study by in situ X‐Ray Absorption Spectroscopy.
Authors: WALKER A. P. , RAYMENT T. , LAMBERT R. M. , OLDMAN R. J.
Published: May 2016

In the two systems studied, CeH2+x/Ru and CeO2/Ru (both derived from CeRu2).
ChemInform Abstract: The Influence of TiO2 on the Speciation and Hydrogenation Activity of Co/Al2O3 Catalysts
Authors: STRANICK M. A. , HOUALLA M. , HERCULES D. M.
Published: May 2016

is studied by means of XRD, ESCA, and Raman spectroscopy.
ChemInform Abstract: Transport Properties of Anion‐Selective Membranes Based on Cobyrinates and Metalloporphyrin Complexes as Ionophores.
Authors: HUSER M. , MORF W. E. , FLURI K. , SEILER K. , SCHULTHESS P. , SIMON W.
Published: May 2016

Zero‐current counter‐transport studies as well as electrodialytic transport experiments on solvent polymeric membranes doped with ionophores for anions are carried out and compared with potentiometric measurements on the same membranes.
ChemInform Abstract: Oxidative Organic Electrochemistry: A Novel Intramolecular Coupling of Electron‐Rich Olefins.
Authors: MOELLER K. D. , MARZABADI M. R. , NEW D. G. , CHIANG M. Y. , KEITH S.
Published: May 2016

The anodic oxidation of electron‐rich enol ethers and olefinic nucleophiles such as (I) or (VII) under constant‐current conditions represents a new class of potentially useful carbon‐carbon bond forming reactions which leads to cyclized products such as (III)‐(VI) or (VIII) and (IX) with a moderate degree of diastereoselectivity.
ChemInform Abstract: Carbometallation of 1,4‐Bis(trimethylsilyl)butadiyne with Trimethylaluminum Using a Bis(cyclopentadienyl)metal Dichloride Catalyst.
Authors: KUSUMOTO T. , NISHIDE K. , HIYAMA T.
Published: May 2016

Carbometallation of (I) in the presence of 1.3 mol% of Zr catalyst affords products such as (IV) and (V) with (E)‐configuration after treatment of the intermediate (III) with an electrophile like H2O or NCS.
ChemInform Abstract: Hydrogen Atom Transfer in Photolyzed (S,S)‐Bis(13‐bromo‐2‐deuteriotridecanoyl) Peroxide: Control of Regiospecificity by Crystal Chirality.
Authors: FENG X. W. , MCBRIDE J. M.
Published: May 2016

In order to study factors that influence reactions in structured environments, it is shown that prim. radical pairs derived from (I) (space group P43212) undergo transfer of "equatorial" α‐hydrogen.
ChemInform Abstract: Carbenes and the O‐H Bond: Spectroscopic Evidence for Protonation of Diarylcarbenes to Give Diarylcarbenium Ions.
Authors: KIRMSE W. , KILIAN J. , STEENKEN S.
Published: May 2016

Corroboration is provided by time‐resolved conductivity for the formation of the carbenium ion (III) via protonation of the carbene (II).
ChemInform Abstract: Inert Solvent for Catalytic C‐H Activation. Achievement of High Conversion in Dehydrogenation of Alkane.
Authors: SAKAKURA T. , ISHIDA K. , TANAKA M.
Published: May 2016

Cyclooctane (I) is dehydrogenated in the presence of rhodium catalysts to give cyclooctene (II) and hydrogen (III).
ChemInform Abstract: Selenium‐Catalyzed Debromination of vic‐Dibromides to Alkenes with Cysteine or Glutathione.
Authors: YANADA K. , YANADA R. , MEGURI H.
Published: May 2016

Reductive debromination of the vic‐dibromides (I) and (IV) is achieved by treatment with cysteine in the presence of sodium selenite as the catalyst, producing the alkenes (II), (III), or (V).
ChemInform Abstract: Cathodic Synthesis of Cyclopropane Derivatives by Electrolysis of Activated Methylene Compounds in 1,2‐Dichloroethane Solution.
Authors: VASIL'EV A. A. , TATARINOVA V. I. , PETROSYAN V. A.
Published: May 2016

Electrolysis of the activated methylene compounds (Ia) ‐ (If) in the presence of 1,2‐dichloroethane (II) gives the cyclopropane derivatives (IIIa) ‐ (IIIg).
ChemInform Abstract: A Ring Contraction of 6‐Alkoxy‐2,3‐dihydro‐6H‐pyran‐3‐ones to Polyfunctionalized Cyclopentenones.
Authors: KOLB H. C. , HOFFMANN H. M. R.
Published: May 2016

The ring contraction of the title pyranones such as (I), (IV) or (VI) to the cyclopentenones (II), (V) or (VII) is described under optimized (→ (II), (VII)) and two‐phase (→ (V)) conditions.
ChemInform Abstract: Synthetic Studies on Transition‐Metal‐Mediated Higher Order Cycloaddition Reactions: Highly Stereoselective Construction of Substituted Bicyclo(4.4.1)undecane Systems.
Authors: RIGBY J. H. , ATEEQ H. S.
Published: May 2016

Higher order cycloaddition reactions are characterized by a high level of stereoselectivity and low chemical efficiency.
ChemInform Abstract: General and Highly Efficient Syntheses of m‐Fluoro Arenes Using Potassium Fluoride‐Exchange Method.
Authors: SUZUKI H. , YAZAWA N. , YOSHIDA Y. , FURUSAWA O. , KIMURA Y.
Published: May 2016

Title compounds such as (II), (IV) and (VI) are prepared in order to test their biological properties.
ChemInform Abstract: Synthesis of 2‐(Aminomethylene)‐2H,3H‐1‐benzothiophene‐3‐one from 3‐Bromo‐4H‐1‐benzothiopyran‐4‐one as a New Donor‐Acceptor Chromophore.
Authors: NAKAZUMI H. , WATANABE S. , MAEDA K. , KITAO T.
Published: May 2016

3‐Bromo‐4H‐1‐benzothiopyran‐4‐one (I) reacts with the amines (II) in ethanol to give the ring contracted (aminomethylene)benzothiophenes (III) or (IV), together with the dimer (V).
ChemInform Abstract: β‐Lithiated Enol Ethers as Enolate Equivalents. Application to N‐Substituted Pyrrolidin‐3‐ones.
Authors: GILES M. , HADLEY M. S. , GALLAGHER T.
Published: May 2016

Treatment of the gem‐dimethoxypyrrolidines (I) with tert‐butyllithium or lithium diisopropylamide yields the methoxypyrrolines (II) which are lithiated and then coupled with the aldehydes (III) or methyl iodide (VII), forming the alcohols (IV) and the methyl derivative (VIII) respectively.
ChemInform Abstract: A New Approach to 4‐(2‐Aminoethyl)indoles via Claisen ortho‐Amide Rearrangement of 3‐Hydroxy‐2‐methoxyindolines.
Authors: KAWASAKI T. , OHTSUKA H. , SAKAMOTO M.
Published: May 2016

The hydroxyindolines (I) react with the amide acetal (II) in o‐dichlorobenzene to produce a mixture of the aromatic N,N‐dimethylacetamides (III) and (IV).
ChemInform Abstract: Azo Coupling of 5(6)‐Hydroxybenzimidazole and Its Derivatives.
Authors: KUZNETSOV YU. V. , STOLYAROVA L. G. , LEZINA V. P. , SMIRNOV L. D.
Published: May 2016

The 5‐hydroxybenzimidazoles (I) are coupled with the diazonium salts (II) to give the 4‐arylazobenzimidazoles (III).
ChemInform Abstract: 1,3‐Dipolar Cycloaddition Reactions of 2‐Phenyl‐4‐arylideneoxazol‐5(4H)‐ones with Nitrile Imines. A Reinvestigation of the Regiochemistry of the 1,3‐Dipolar Cycloaddition Reactions of 2‐Phenyl‐4‐arylideneoxazol‐5(4H)‐ones with Nitrile Oxides.
Authors: COUTOULI‐ARGYROPOULOU E. , ARGYROPOULOS N. G. , THESSALONIKEOS E.
Published: May 2016

By this reaction some compounds such as (III) and (VII) are isolated regioselectively.
ChemInform Abstract: A Convenient Synthesis of 2,4′‐Bipyridine.
Authors: SHIAO M.‐J. , TARNG K.‐Y.
Published: May 2016

N‐Ethoxycarbonylpyridinium chloride (I) is coupled with the lithiated 2‐alkoxy‐6‐bromopyridines (II) to yield unstable 1,4‐dihydropyridines which are converted into the 2,4'‐bipyridines (III) upon treatment with oxygen.
ChemInform Abstract: The Synthesis and Antibacterial Activities of Quinolones Containing Five‐ and Six‐Membered Heterocyclic Substituents at the 7‐Position.
Authors: COOPER C. S. , KLOCK P. L. , CHU D. T. W. , FERNANDES P. B.
Published: May 2016

Starting with o‐fluoroacetophenone (I), the quinolinecarboxylate (VI) is prepared via ring closure of the aniline (IV) with the ethoxymethylenemalonate (V).
ChemInform Abstract: Synthesis and Pharmacological Evaluation of 6,8‐Diaryl‐1,2,4‐triazolo‐(4,3‐b)‐ and ‐1,2,3,4‐tetrazolo(1,5‐b)pyridazines.
Authors: RUBAT C. , COUDERT P. , COUQUELET J. M. , TRONCHE P. , BASTIDE J. , BASTIDE P.
Published: May 2016

Reaction of the chloropyridazines (I) with the azide (II) and the hydrazinecarboxylate (IV) gives the tetrazolo‐ (III) and the triazolopyridazines (V) respectively.
ChemInform Abstract: A Novel Reaction of Thiirane Cation Radicals in Solution: The Formation of 5,6‐Diphenyl‐1,2,3,4‐tetrathianes Through Trisulfurated Thiirane Cation Radical Intermediates.
Authors: KAMATA M. , MURAYAMA K. , SUZUKI T. , MIYASHI T.
Published: May 2016

Treatment of the 2,3‐diphenylthiiranes (I) with the radical cation salt tris(p‐bromophenyl)aminium hexachloroantimonate in dichloromethane produces the diphenyltetrathianes (II) and (III), together with the stilbenes (IV) and (V) and sulfur (VI).
ChemInform Abstract: Synthesis and Metal‐Binding Properties of Polybipyridine Ligands Derived from Acyclic and Macrocyclic Polyamines.
Authors: ZIESSEL R. , LEHN J.‐M.
Published: May 2016

As shown for (III), synthetic procedures are developed for the preparation of ligands such as (III)‐(VI) bearing up to six 2,2'‐bipyridine groups attached to acyclic and macrocyclic polyamines.
ChemInform Abstract: Synthetic Methods. Part 33. Versatile Methods of Synthesis of 5 to 8‐Membered Ring N‐Heterocycles via Intramolecular Cycloadditions of Allylamines.
Authors: RAI K. M. L. , HASSNER A.
Published: May 2016

The unsaturated N‐allyl‐N‐nitroalkylsulfonamides (V) and (X), prepared from the sulfonamides (I) and (VII) as outlined in the reaction scheme, are cyclized upon treatment with phenyl isocyanate to give the fused isoxazolines (VI) or (XI).
ChemInform Abstract: Amination Reaction of Allylic Chlorides with Silver Iodide/Lithium N,N‐Disilylamide Mixed Reagents.
Authors: MURAI T. , YAMAMOTO M. , KATO S.
Published: May 2016

The allylic chlorides (I) are coupled with lithium hexamethyldisilazide (II) in the presence of silver iodide to produce the allyl‐N,N‐disilylamines (III).
ChemInform Abstract: P‐H Insertion of Carbenes. Part 3. Structure of the Compounds Obtained by Thermocatalytic Reaction of 2‐Diazo‐1,3‐diphenyl‐1,3‐propanedione with Dimethyl Phosphite ‐ Dimethyl 1,3‐Dioxo‐1,3‐diphenyl‐2‐propylphosphonate and 1,3‐Diphenyl‐1,2,3‐propanetrione (N‐Dimethoxyphosphorylhydrazone).
Authors: KATAEVA O. N. , LITVINOV I. A. , NAUMOV V. A. , POLOZOV A. M. , POLEZHAEVA N. A.
Published: May 2016

The diazodiketone (I) reacts with excess dimethyl phosphite (II) in the presence of cupric sulfate to give predominantly the oxopropanoate (III), together with dibenzoylmethane (IV), the phosphonate (V), and the dimethoxyphosphorylhydrazone (VI).
ChemInform Abstract: Preparation and Characterization of Selenium Compounds with the 2,4,6‐Tris(trifluoromethyl)phenyl Substituent.
Authors: BERTEL N. , ROESKY H. W. , EDELMANN F. T. , NOLTEMEYER M. , SCHMIDT H. G.
Published: May 2016

The synthesized diaryl diselenide (III) (space group P212121, Z=4) is used for synthesis of the bis(arylselenyl)methane (V), the bis(arylselenyl)‐Pt(II) complex (VI) (yield 74% from Pt(PPh3)2(CH2=CH2)), and the selenyl halides (VII).
ChemInform Abstract: Synthesis and Cycloadditions of Monomeric Selenobenzophenone.
Authors: ERKER G. , HOCK R. , KRUEGER C. + , WERNER S. , KLAERNER F.‐G. + , ARTSCHWAGER‐PERL U.
Published: May 2016

The title compound (III) prepared from (I) and Se (II) is monomeric in solution and dimeric (IV) in the solid state.
ChemInform Abstract: Preparation of Activated Calcium, Strontium, and Barium Powders by Reduction of Alkaline Earth Diiodides.
Authors: MCCORMICK M. J. , MOON K. B. , JONES S. R. , HANUSA T. P.
Published: May 2016

Trityl chloride (I) reacts with the metals (II), obtained by reduction of the corresponding diiodides with metallic potassium, in tetrahydrofuran (III) to yield the triphenylmethylmetal chlorides (IV).
ChemInform Abstract: Chemistry of Organo‐Transition‐Metal Compounds. Part 55. Preparation and Properties of Niobocenium and Tantalocenium Salts ‐ Crystal and Molecular Structure of ((C5H5)2NbCl2)(BF4)·CH3CN.
Authors: THIELE K.‐H. , KUBAK W. , SIELER J. , BORRMANN H. , SIMON A.
Published: May 2016

The cationic Nb(V) and Ta(V) compounds (II) and (IV) are obtained by oxidation reactions shown.
ChemInform Abstract: Ruthenium‐Tungsten and Iron‐Tungsten Complexes with Ethynyl and Ethynediyl Bridges.
Authors: FRANK K. G. , SELEGUE J. P.
Published: May 2016

As possible models for low‐coordinate surface carbides the shown examples of heterometallic complexes with bridging ethynyl and ethynediyl ligands are prepared.
ChemInform Abstract: Novel Chelates of Pd(II) Dithiocarbamates. Spectroscopic Studies and Thermal Behavior.
Authors: CRIADO J. J. , FERNANDEZ I. , MACIAS B. , SALAS J. M. , MEDARDE M.
Published: May 2016

Novel chelates such as (III) are synthesized also with dithiocarbamates derived from DL‐alanine, DL‐valine, L‐valine and DL‐leucine.
ChemInform Abstract: Diels‐Alder Adducts of Vinylporphyrins: Synthesis and in vivo Photodynamic Effect against a Rat Bladder Tumor.
Authors: MORGAN A. R. , GARBO G. M. , KECK R. W. , MILLER R. A. , SELMAN S. H. , SKALKOS D.
Published: May 2016

The porphorins (I) are subjected to Diels‐Alder reaction with dimethyl acetylenedicarboxylate (II) or tetracyanoethylene (IV) to yield the cycloadducts (III) and (V).
ChemInform Abstract: Chemistry of α‐Aminonitriles. Part 4. Aldomerization of Glycolaldehyde Phosphate to rac‐Hexose 2,4,6‐Triphosphates and (in Presence of Formaldehyde) rac‐Pentose 2,4‐Diphosphates: rac‐Allose 2,4,6‐Triphosphate and rac‐Ribose 2,4‐Diphosphate are the Main Reaction Products.
Authors: MUELLER D. + , PITSCH S. , KITTAKA A. , WAGNER E. , WINTNER C. E. , ESCHENMOSER A.
Published: May 2016

Glycolaldehyde phosphate (I), for which a structural relationship with members of the C3H4N2 ensemble of aminonitriles has been found to exist via O3‐phosphoserinenitrile in the preceding papers, is subjected to a series of aldolization reactions.
ChemInform Abstract: Synthesis of the Repeating Unit of the Capsular Antigen of Neisseria meningitidis Serogroup H.
Authors: METTEN K.‐H. , WELZEL P.
Published: May 2016

Starting with (D)‐mannitol (I) the synthesis of the common intermediate (VIIIa) is described, which can be converted via a series of deprotection and phosphorylation steps into the phosphates (VIIIb) and (VIIIc), one of which represents the repeating unit of the title capsular antigen.
ChemInform Abstract: Monoterpenic Alkaloids. Part 2. Stereospecific Synthesis of (.+‐.)‐δ7,7a‐4aβH‐Isotecomanine.
Authors: BRAYER J. L. , ALAZARD J. P. , THAL C.
Published: May 2016

The title compound (IV), an unnatural isomer of tecomanine (V), is synthesized from the pyridine derivative (I) via a hydroboration/oxidation/isomerization/protonation sequence.
ChemInform Abstract: Antimicrobial Activity of Onychine and Related Compounds.
Authors: KOYAMA J. , TAGAHARA K. , KONOSHIMA T. , KOZUKA M. , YANO Y. , TANIGUCHI M.
Published: May 2016

Onychine (Ia) has been isolated from Cleistopholis patens as anticandidal compound.
ChemInform Abstract: Fluoronaphthyridines and Quinolones as Antibacterial Agents. Part 2. Synthesis and Structure‐Activity Relationships of New 1‐tert‐Butyl 7‐Substituted Derivatives.
Authors: BOUZARD D. , DI CESARE P. , ESSIZ M. , JACQUET J. P. , KIECHEL J. R. , REMUZON P. , WEBER A. , OKI T. , MASUYOSHI M. , KESSLER R. E. , FUNG‐TOMC J. , DESIDERIO J.
Published: May 2016

A series of 7‐substituted 1‐tert‐butyl‐6‐fluoro‐1,8‐naphthyridine‐3‐carboxylic acids, e.g. (III), and related oxoquinolinecarboxylic acids, e.g. (VI), are prepared from the corresponding 7‐halo derivatives (I) or (IV) by substitution reaction with the amines (II) or (V).
ChemInform Abstract: Influence of Magnesium‐Aluminum Spinel on the Directed Oxidation of Molten Aluminum Alloys.
Authors: SINDEL M. , TRAVITZKY N. A. , CLAUSSEN N.
Published: May 2016

The directed oxidation of some molten Al alloys is studied (1050 °C and 1150 °C, ambient atmosphere, 8‐12 h).
ChemInform Abstract: Properties of Sm2O3‐Al2O3‐SiO2 Glasses for in vivo Applications.
Authors: ERBE E. M. , DAY D. E.
Published: May 2016

Sm2O3‐Al2O3‐SiO2 (SmAS) glasses are investigated in order to assess their usefulness as radiotherapeutic agents.
ChemInform Abstract: Nitridation of the Sol‐Gel‐Derived Titanium Oxide Films by Heating in Ammonia Gas.
Authors: KAMIYA K. , NISHIJIMA T. , TANAKA K.
Published: May 2016

Sol‐gel‐derived TiO2 films on alumina substrates (dip‐coating) are converted to nonstoichiometric titanium nitride, TiNx with x ≤ 1 by heating in NH3 atmosphere at ∼1000 °C. It is found that TiO2 films derived from (iPrO)4Ti solutions containing diethanolamine as stabilizer are more easily nitrided than those prepared from sols containing HCl as a deflocculant reagent.
ChemInform Abstract: Chemistry in the Polar Intermetallic Host Zr5Sb3. Fifteen Interstitial Compounds.
Authors: GARCIA E. , CORBETT J. D.
Published: May 2016

The syntheses of single‐phase samples of Zr5Sb3Z with Z: C, O, Al, Si, P, S, Co, Ni, Cu, Zn, Ge, As, Se, Ru, and Ag are described and single crystal XRD data are reported for two metal‐flux products, Zr5Sb3Si and Zr5Sb3Zn (space group P63/mcm, Z=2).
ChemInform Abstract: Inverse Experiments with Fluorine Detection.
Authors: BOURDONNEAU M. , BREVARD C.
Published: May 2016

The inverse (19F‐183W) 2D correlation of (H2W12FO39)H5 (0.3 M in D2O) is found to easily detect the existence of a second tungstate species (probably the β‐isomer), which is scarcely detectable by the direct tungsten 1D spectrum.
ChemInform Abstract: Vapor Pressures of Hydroxides. Part 2. TeO(OH)2.
Authors: KONINGS R. J. M. , CORDFUNKE E. H. P. , SMIT‐GROEN V.
Published: May 2016

The results of a reinvestigation of the volatilization of TeO2 in the presence of steam using the gas‐saturation method confirm previous findings that a gaseous hydroxide of the formula TeO(OH)2 is formed in the vapor.
ChemInform Abstract: Local Chemistry and Growth of Single Corrosion Pits in Aluminum.
Authors: WONG K. P. , ALKIRE R. C.
Published: May 2016

The local chemical environment in naturally occurring and artificial corrosion pits on pure Al in 1 M NaCl at pH 11 is studied.
ChemInform Abstract: Stepwise Hydrolysis Kinetics of Tetrachloroplatinate(II) in Base.
Authors: WU L. , SCHWEDERSKI B. E. , MARGERUM D. W.
Published: May 2016

The 195Pt NMR study of the hydrolysis of PtCl42‐ in 1 M NaOH shows that the hydrolysis proceeds via the four irreversible reactions outlined in the scheme (the four individual pseudo‐first‐order rate constants are given).
ChemInform Abstract: Comparative Study of the Catalytic Properties and Deactivation of Supported and Unsupported Nickel for Liquid Phase Hydrogenation.
Authors: ALPHONSE P. , MOYEN F. , RAMALANJAONA M. , MAURET P.
Published: May 2016

Ni/Al2O3 catalysts are prepared by impregnation of alumina with a solution of anhydrous NiBr2 in THF followed by reduction with EtMgBr at 20 °C. The catalytic activity of these catalysts for liquid phase hydrogenation (hexene‐1, cyclohexene, hexyne, benzene) is found to be higher than that of unsupported Ni prepared by the same method.
ChemInform Abstract: Layered Titanate Pillared with Alumina.
Authors: ANDERSON M. W. , KLINOWSKI J.
Published: May 2016

Pillaring of layered Na2Ti3O7 is achieved by heating ground Na2Ti3O7 in a solution containing the polymeric (Al13O4(OH)24+x(H2O)12x)(7‐x)+ Keggin‐type cation (prepared by hydrolysis of aluminum chlorohydrate) at 80 °C for 1 h and subsequent calcination of the colloidal product at 500 °C in air.
ChemInform Abstract: Further Studies of Os2X2‐ 8 Ions: (PMePh3)2Os2Cl8 with Eclipsed, Disordered Anions and the First Os2I2‐ 8 Compound.
Authors: COTTON F. A. , VIDYASAGAR K.
Published: May 2016

The title compound (PMePh3)2Os2Cl8 crystallizes in space group P21/n with Z=2 and contains an eclipsed Os2Cl82‐ ion with an Os‐Os unit disordered unequally in two orientations.
ChemInform Abstract: Stereoconvergent Crotylstannane Addition to nor‐Ephedrine‐Derived 2‐Methoxy Oxazolidines. A Clue Towards a Synclinal Transition State Geometry.
Authors: PASQUARELLO A. , POLI G. , POTENZA D. , SCOLASTICO C.
Published: May 2016

The BF3‐promoted addition of the crotyl stannane (II) to the nor‐ephedrine derived oxazolidine (I) takes place with opposite stereochemistry with respect to the analogous silylketenethioacetal addition to give the adduct (III) as the only product.
ChemInform Abstract: Stereoselective Preparation of Ethyl 2,3‐Dihydroxy‐4,4,4‐trifluorobutyrates via Enzymatic Optical Resolution.
Authors: YAMAZAKI T. , OKAMURA N. , KITAZUME T.
Published: May 2016

Both anti enantiomers (IV) of the title compound are accessible from (±)‐(I), whereas only (+)‐(VII) can be isolated in the case of the syn isomers.
ChemInform Abstract: Aromatic Nitro‐Group Displacement Reactions. Part 2. The Synthesis of Diarylamines and Some Heteroaromatic Analogues.
Authors: GORVIN J. H.
Published: May 2016

In dipolar aprotic solvents, activated aromatic nitro groups can usually be displaced by anilines such as (I).
ChemInform Abstract: Trapping of a Carbocationic Intermediate in the Spontaneous Hydrolysis Reaction of 7β,8α‐Dihydroxy‐9β,10β‐epoxy‐7,8,9,10‐tetrahydrobenzo(a)py# rene: Mechanism of the Spontaneous and General Acid Catalyzed Hydrolysis Reactions of Bay‐Region Benzo(a)pyrene 7,8‐Diol 9,10‐Epoxides.
Authors: ISLAM N. B. , GUPTA S. C. , YAGI H. , JERINA D. M. , WHALEN D. L.
Published: May 2016

The carbocation (II) is formed in the spontaneous hydrolysis of (I) and is trapped by N3‐ and N‐acetylcysteine anions.
ChemInform Abstract: Octachlorofulvalene as a Diene in the Diels‐Alder Reaction.
Authors: FRAY G. I. , JONES C. B. , PETTS J. C.
Published: May 2016

Cyclopentadiene (II) behaves predominantly as a dienophile in Diels‐Alder reactions.
ChemInform Abstract: Palladium Catalyzed Polycyclization ‐ Anion Capture Processes.
Authors: GRIGG R. , DORRITY M. J. R. , MALONE J. F. , SRIDHARAN V. , SUKIRTHALINGAM S.
Published: May 2016

The N,N‐dialkenyl‐o‐iodobenzamide (I), the related benzyl ether (V), and the sulfonamide (VIII) undergo Pd‐catalyzed twofold ring closure in the presence of hydride or phenyl anions, yielding heterotricycles.
ChemInform Abstract: Electroorganic Chemistry. Part 123. Electroreductive Intramolecular Coupling of γ‐ and δ‐Cyano Ketones.
Authors: SHONO T. , KISE N.
Published: May 2016

The 2‐(cyanoalkyl)cycloalkanones (I) are cyclized upon electrochemical reduction at a tin cathode to form the bicyclic ketones (II) and/or (III).
ChemInform Abstract: Preparation of Fluorinated Allyl Alcohols.
Authors: DUBUFFET T. , BIDON C. , MARTINET P. , SAUVETRE R. , NORMANT J.‐F.
Published: May 2016

Starting from chlorotrifluoroethylene difluoroalkenes, e.g. (I), are available which are transformed to pure (Z)‐ or (E)‐α,β‐difluoroallyl alcohols such as (IV) and (VI), respectively.
ChemInform Abstract: Is 1,3‐Dihydroxypropanenitronic Acid Really Stable?
Authors: EREMENKO L. T. , ORESHKO G. V. , LAGODZINSKAYA G. V. , ZABRODIN V. A.
Published: May 2016

Condensation reaction of nitromethane (I) with paraformaldehyde (II) in the presence of potassium fluoride and tetrabutylammonium bromide does not give the nitronic acid mentioned in the title but the nitro compounds (III) and (IV) are formed.
ChemInform Abstract: The endo (I) to exo (II) Isomerisation of Dicyclopentadiene.
Authors: BAKKE J. M. , LUNDQUIST M.
Published: May 2016

Neither of the acidic catalysts tested in condensed phase (toluene, 100 °C) affords the desired isomer (II).