bluuebunny/crossref_metadata_2025_split huggingface dataset:
Asymmetric Mixed‐Valence Complexes that Consist of Cyclometalated Ruthenium and Ferrocene: Synthesis, Characterization, and Electronic‐Coupling Studies
Authors: Wu Si‐Hai , Shen Jun‐Jian , Yao Jiannian , Zhong Yu‐Wu 
Published: October 2012

AbstractThree bis‐tridentate ferrocene‐containing cyclometalated ruthenium complexes, [(Fcdpb)Ru(tpy)]+ (1+), [(Fctpy)Ru(dpb)]+ (2+), and [(Fcdpb)Ru(Fctpy)]+ (3+), have been prepared and characterized, where Fcdpb is the 2‐deprotonated form of 1,3‐di(2‐pyridyl)‐5‐ferrocenylbenzene, tpy is 2,2′:6′,2“‐terpyridine, dpb is the 2‐deprotonated form of 1,3‐di(2‐pyridyl)benzene, and Fctpy is 4′‐ferrocenyl‐2,2′:6′,2”‐terpyridine. Single crystals of compounds 2+ and 3+ have been studied by X‐ray analysis. Complexes 1+ and 2+ displayed two anodic redox waves, whilst three well‐separated redox couples were observed for compound 3+. A combined experimental and computational study suggested that the ferrocene unit on the Fcdpb moiety in compounds 1+ and 3+ was oxidized first. In contrast, the order of the oxidation of ruthenium and ferrocene in complex 2+ was reversed. Metal‐to‐metal‐charge‐transfer transitions (MM′CT) have been observed for the singly oxidized states 12+, 22+, and 32+ in the near‐infrared region. Hush analysis showed that the metal–metal electronic couplings in compounds 12+ and 32+ were much stronger than those in compound 22+.
Regional gastrointestinal delivery of remogliflozin etabonate in humans
Authors: O'Connor‐Semmes Robin L. , Sandefer Erik P. , Hussey Elizabeth K. , Tao Wenli , Doll Walter J. , Page Richard C. , Dobbins Robert 
Published: October 2012

ABSTRACTRemogliflozin etabonate (RE) is the prodrug of remogliflozin (R), an inhibitor of renal glucose transport designed to reduce blood glucose concentrations for the treatment of type 2 diabetes. This open‐label, randomized, single‐dose, four‐way crossover study, (with one add‐on arm) in eight healthy men evaluated the regional gastrointestinal absorption of RE, the systemic appearance of the active entity R, and an active metabolite, GSK279782. The InteliSite® Companion Capsule was used to administer a single dose of RE 100 mg to the mid‐small intestine or cecum/colon. Oral administration of the IR tablet of RE showed similar bioavailability of R compared with small intestine delivery with both suspension and solution. The lowest bioavailability of remogliflozin was found with large intestine delivery and therefore not a suitable region for prodrug delivery. Although both lower permeability and decreased ester hydrolysis of remogliflozin etabonate in the colon can explain reduced plasma exposures of remogliflozin, the data suggest relatively limited remogliflozin etabonate hydrolysis in the colon and provides evidence for a diminishing gradient of esterase activity from small to large intestine. Copyright © 2012 John Wiley & Sons, Ltd.
Metabolism of 7‐ethoxycoumarin, safrole, flavanone and hydroxyflavanone by cytochrome P450 2A6 variants
Authors: Uno Tomohide , Obe Yuichiro , Ogura Chika , Goto Tatsushi , Yamamoto Kohei , Nakamura Masahiko , Kanamaru Kengo , Yamagata Hiroshi , Imaishi Hiromasa 
Published: October 2012

ABSTRACTCYP 2A6 is a human enzyme that metabolizes many xenobiotics including coumarin, indole, nicotine and carcinogenic nitrosamines. The gene for CYP2A6 is polymorphic. There are few data available to clarify the relationship between P450 genetic variants and the metabolism of materials in food. The CYP 2A6 wild‐type protein and 13 mutants (CYP2A6.1, CYP2A6.2, CYP2A6.5, CYP2A6.6, CYP2A6.7, CYP2A6.8, CYP2A6.11, CYP2A6.15, CYP2A6.16, CYP2A6.17, CYP2A6.18, CYP2A6.21, CYP2A6.23 and CYP2A6.25) were co‐expressed with NADPH‐cytochrome P450 reductase in E. coli. The hydroxylase activities toward 7‐ethoxycoumarin, coumarin, safrole, flavanone and hydroxyflavanone were examined. Ten types of CYP2A6 variants except for CYP2A6.2, CYP2A6.5 and CYP2A6.6 showed Soret peaks (450 nm) typical of P450 in the reduced CO‐difference spectra and had 7‐ethoxycoumarin O‐deethylase activities. CYP2A6.15 and CYP2A6.18 showed higher activities for safrole 1′‐hydroxylation than CYP2A6.1. CYP2A6.25 and CYP2A6.7 had lower safrole 1′‐hydroxylase activities. CYP2A6.7 had lower flavanone 6‐ and 2′‐hydroxylase activities, whereas CYP2A6.25 had higher 6‐hydroxylase activity and lower 2′‐hydroxylase activity. Hydroxyflavanone was metabolized by CYP2A6.25, but was not metabolized by wild‐type CYP2A6.1. These results indicate that CYP2A6.25 possessed new substrate specificity toward flavonoids. Copyright © 2012 John Wiley & Sons, Ltd.
Mechanistic Studies on the Catalytic Oxidative Amination of Alkenes by Rhodium(I) Complexes with Hemilabile Phosphines
Authors: Jiménez M. Victoria , Bartolomé M. Isabel , Pérez‐Torrente Jesús J. , Gómez Daniel , Modrego F. Javier , Oro Luis A. 
Published: October 2012

AbstractCationic rhodium(I) complexes with P,O‐functionalised arylphosphine ligands are efficient catalysts for the regioselective anti‐Markovnikov oxidative amination of styrene with piperidine. The mechanism of the catalytic reaction has been investigated by spectroscopic means under stoichiometric and catalytic conditions. In the presence of piperidine, the catalyst precursor [Rh{κ2‐P,O‐Ph2P(CH2)3OEt}2]+ (5) gave the piperidine complex [Rh{κ1‐P‐Ph2P(CH2)3OEt}2(HNC5H10)2]+ (8) that was transformed into the neutral amido–piperidine species [Rh{κ1‐P‐Ph2P(CH2)3OEt}2(NC5H10)(HNC5H10)] (9) under thermal conditions. NMR studies performed in the presence of styrene under catalytic conditions showed that 9 is a key species in the catalytic oxidative amination of styrene. Related cyclooctadiene‐containing catalyst precursors [Rh(cod){κ1‐P‐Ph2P(CH2)3OEt}n]+ (n=1, 2) also gave 9 under the same conditions. The proposed catalytic cycle has been established by a series of DFT calculations including the transition states of the key steps that have been identified and characterised. These studies have shown that, after elimination of the enamine, regeneration of catalytic active species takes place by direct transfer of the proton of a piperidine ligand to the alkyl group resulting from the insertion of styrene into the RhH bond and formation of ethylbenzene. Against the expectations, the formation of a dihydride intermediate by NH oxidative addition is a highly energy‐demanding process. Catalyst 5 has also been applied for the oxidative amination of substituted vinylarenes with several secondary cyclic and acyclic amines.
Chirality and Template‐Mediated Induction of Helical Preferences in Achiral β‐Peptides
Authors: Sharma Gangavaram V. M. , Kodeti Srinivas Reddy , Dutta Samit K. , Velaparthi Subash , Narsimulu Kongari , Anjaiah Gonuguntla , Basha Shaik Jeelani , Kunwar Ajit C. 
Published: October 2012

AbstractThis study describes chirality‐ or template‐mediated helical induction in achiral β‐peptides for the first time. A strategy of end capping β‐peptides derived from β‐hGly (the smallest achiral β‐amino acid) with a chiral β‐amino acid that possesses a carbohydrate side chain (β‐Caa; C‐linked carbo β‐amino acid) or a small, robust helical template derived from β‐Caas, was adopted to investigate folding propensity. A single chiral (R)‐β‐Caa residue at the C‐ or N‐terminus in these oligomers led to a preponderance of right‐handed 12/10‐helical folds, which was reiterated more strongly in peptides capped at both the C‐ and N‐terminus. Likewise, the presence of a template (a 12/10‐helical trimer) at both the C‐ and N‐terminus resulted in a very robust helix. The propagation of the helical fold and its sustenance was found in a homo‐oligomeric sequence with as many as seven β‐hGly residues. In both cases, the induction of helicity was stronger from the N terminus, whereas an anchor at the C terminus resulted in reduced helical propensity. Although these oligomers have been theoretically predicted to favor a 12/10‐mixed helix in apolar solvents, this study provides the first experimental evidence for their existence. Diastereotopicity was found in both the methylene groups of the β‐hGly moieties due to chirality. Additionally, the β‐hGly units have shown split behavior in the conformational space to accommodate the 12/10‐helix. Thus, end capping to assist chiralty‐ or template‐mediated helical induction and stabilization in achiral β‐peptides is a very attractive strategy.
Visible‐Light Photocatalytic Hydrogen Generation by Using Dye‐Sensitized Graphene Oxide as a Photocatalyst
Authors: Latorre‐Sánchez Marcos , Lavorato Cristina , Puche Marta , Fornés Vicente , Molinari Raffaele , Garcia Hermenegildo 
Published: October 2012

AbstractDye‐sensitized graphene oxide is able to generate hydrogen from water/methanol mixtures (80:20) by using visible or solar light. The most efficient photocatalyst tested contained a tris(2,2‐bipyridyl) ruthenium(II) complex incorporated in the interlayer spaces of a few layers of graphene oxide with a moderate degree of oxidation. The graphene oxide‐based photocatalyst does not contain noble metals and we have determined that it is two orders of magnitude more active than catalysts based on conventional titania.
Far‐Infrared‐Assisted Preparation of a Graphene–Nickel Nanoparticle Hybrid for the Enrichment of Proteins and Peptides
Authors: Qu Weidong , Bao Huimin , Zhang Luyan , Chen Gang 
Published: October 2012

AbstractA new approach based on far infrared‐assisted in situ reduction was developed for the facile one‐step preparation of graphene–nickel nanoparticle hybrid by refluxing a mixture solution containing graphene oxide, nickel(II) sulfate, and hydrazine over an far‐infrared heater. The reduction time was as short as 20 min. The structure of the material was investigated by transmission electron microscopy, scanning electron microscopy, X‐ray diffraction, energy dispersive spectroscopy, vibrating sample magnetometery, and Fourier transform infrared spectroscopy. Magnetic investigations indicate that the grapheme–nickel nanoparticle hybrid exhibits ferromagnetic behavior at room temperature. Meanwhile, the hybrid was successfully employed in the enrichment and identification of proteins and peptides in combination with matrix‐assisted laser desorption/ionization time‐of‐flight mass spectrometry based on its excellent magnetic responsibility, high dispersibility, large surface area, and hydrophobicity, indicating great promise for a wide range of applications.
Multilayer Films with Nanocontainers: Redox‐Controlled Reversible Encapsulation of Guest Molecules
Authors: Zhang Jiawei , Liu Yiliu , Yuan Bin , Wang Zhiqiang , Schönhoff Monika , Zhang Xi 
Published: October 2012

AbstractStable multilayer films with cucurbit[8]uril have been fabricated on the basis of the alternating layer‐by‐layer assembly of a novel side‐chain pseudopolyrotaxane and a photoreactive polyanion. The as‐prepared multilayer films exhibit good properties as surface‐imprinted multilayers, because cucurbit[8]uril molecules that are locked inside the multilayers can act as nanocontainers with specific binding to certain guest molecules, and the loading and release of the guest is redox‐controllable and reversible.
ChemInform Abstract: Copper Bismuth Chalcogenide Halogenides with Extensively Disordered and Mobile Copper(I) Cations.
Authors: Heerwig Andreas , Mueller Ulrike , Nitsche Fabian , Ruck Michael 
Published: October 2012

AbstractThe compounds Cu3.58Bi4.42Se6.84Cl3.16 (I), Cu4.52Bi3.48Se4.96Br5.04 (II), and Cu3.33Bi2S3.33I2.67 (III) are obtained by slow cooling of high temperature melts and characterized by single crystal XRD.
ChemInform Abstract: Gd13Fe10C13: Indications of Fe—Fe Multiple Bonding Emerging from Chemical Frustration.
Authors: Hadler Amelia B. , Fredrickson Daniel C. 
Published: October 2012

AbstractThe title compound is synthesized by arc‐melting of stoichiometric mixtures of the elements followed by annealing at 900 °C for 350 h.
ChemInform Abstract: Differentiating Between Trivalent Lanthanides and Actinides.
Authors: Polinski Matthew J. , Grant Daniel J. , Wang Shuao , Alekseev Evgeny V. , Cross Justin N. , Villa Eric M. , Depmeier Wulf , Gagliardi Laura , Albrecht‐Schmitt Thomas E. 
Published: October 2012

AbstractThe reaction products of LnCl3 (Ln: Y, La—Lu) and AnCl3 (An: Pu, Am, Cm) with molten boric acid are characterized by single crystal XRD, UV/VIS/NIR spectroscopy, and DFT quantum chemical calculations.
ChemInform Abstract: Formation of LiBH4 Hydrate with Dihydrogen Bonding.
Authors: Yamawaki Hiroshi , Fujihisa Hiroshi , Gotoh Yoshito , Nakano Satoshi 
Published: October 2012

AbstractLiBH4·H2O, obtained by exposing LiBH4 to air with about 5% relative humidity at room temperature is characterized by powder XRD, IR transmission spectroscopy, and DFT calculations.
ChemInform Abstract: Enhanced Luminescence of Sr2SiO4:Dy3+ by Sensitization (Ce3+/Bi3+) and Its Composition‐Induced Phase Transition.
Authors: Zhang Le , Han Pengde , Wang Kun , Lu Zhou , Wang Lixi , Zhu Yunfeng , Zhang Qitu 
Published: October 2012

AbstractCe3+/Bi3+ codoped Sr2SiO4:Dy3+ phosphors are prepared by solid state reactions of Dy2O3, SrCO3, SiO2, Ce(NO3)3, Bi2O3, and Li2CO3 using NH4Cl as a flux (1000 °C, 4 h).
ChemInform Abstract: Synthesis, Structure and Photoluminescence Properties of Fine Yellow‐Orange Ca‐α‐SiAlON: Eu2+ Phosphors.
Authors: Yang Zhigang , Wang Yuhua , Zhao Zhengyan 
Published: October 2012

AbstractCa0.8Si9.2Al2.8O1.2 N14.8:xEu2+ (x = 0—0.24) phosphors are prepared by the carbothermal reduction and nitridation method starting with stoichiometric mixtures of CaCO3, Al2O3, Si3N4, Eu2O3, and high purity activated charcoal (alumina crucible, N2 gas flow, 1600 °C, 4 h).
ChemInform Abstract: Synthesis, Structural Characterization, and Physical Properties of the Type‐I Clathrates A8Zn18As28 (A: K, Rb, Cs) and Cs8Cd18As28.
Authors: He Hua , Zevalkink Alex , Gibbs Zachary M. , Snyder G. Jeffrey , Bobev Svilen 
Published: October 2012

AbstractThe new title clathrates are synthesized in high yields by reacting mixtures of As and Zn or Cd in alumina crucibles at 720 °C for 2 d followed by reaction of the obtained precursors with the alkali metals (sealed Nb tube, 550 °C, 3—5 d).
ChemInform Abstract: A New Al‐MOF Based on a Unique Column‐Shaped Inorganic Building Unit Exhibiting Strongly Hydrophilic Sorption Behavior.
Authors: Reinsch Helge , Marszalek Bartosz , Wack Julia , Senker Juergen , Gil Barbara , Stock Norbert 
Published: October 2012

AbstractThe new metal‐organic framework [Al13(OH)27(H2O)6 (bdc‐NH2)3Cl6(iPrOH)6] (H2bdc‐NH2: 2‐aminoterephthalic acid) is solvothermally synthesized from a mixture of H2bdc‐NH2 and a large excess of AlCl3 in i‐PrOH (autoclave, 120 °C, 12 h).
ChemInform Abstract: Structural, Optical, and Transport Properties of α‐ and β‐Ag3VO4.
Authors: Poeppelmeier K. R. , et al. et al. 
Published: October 2012

AbstractSingle crystals of α‐Ag3VO4 are hydrothermally prepared from aqueous mixtures of Ag2O, V2O5, and HF as a mineralizer (autoclave, 150 °C, 24 h).
ChemInform Abstract: Organocatalyzed Michael—Henry Reactions: Enantioselective Synthesis of Cyclopentanecarbaldehydes via the Dienamine Organocatalysis of a Succinaldehyde Surrogate.
Authors: Hong Bor‐Cherng , Chen Po‐Yuan , Kotame Prakash , Lu Pei‐Ying , Lee Gene‐Hsiang , Liao Ju‐Hsiou 
Published: October 2012

AbstractFormal [3 + 2]cycloaddition of 4‐hydroxybut‐2‐enal, a succinaldehyde surrogate, with nitroalkenes in the presence of Jorgensen—Hayashi catalyst provides cyclopentanecarbaldehydes containing 4 consecutive stereogenic centers with excellent enantioselectivities.
ChemInform Abstract: Asymmetric Dehydrative C‐, N‐, and O‐Allylation Using Naph‐diPIM‐dioxo‐i‐Pr—CpRu/p‐TsOH Combined Catalyst.
Authors: Miyata Kengo , Kitamura Masato 
Published: October 2012

AbstractThe combined catalyst which contains either (I) or its enantiomer is found to be significantly active for intermolecular and intramolecular versions.
ChemInform Abstract: Organocatalytic Enantioselective Substitution of MBH Carbonates by 2‐Fluoromalonates.
Authors: Wang Bing , Companyo Xavier , Li Jing , Moyano Albert , Rios Ramon 
Published: October 2012

AbstractA practical asymmetric allylic substitution of Baylis—Hillman carbonates (I) with 2‐fluoromalonate (II) is achieved in the presence of β‐isocupreidine as organocatalyst.
ChemInform Abstract: The Use of New Chiral Phosphite and Amidophosphite Ligands in the Rh‐Catalyzed Hydrogenation of Dehydro‐β‐amino Acid Derivatives.
Authors: Lyubimov S. E. , Rastorguev E. A. , Petrovskii P. V. , Davankov V. A. 
Published: October 2012

AbstractThe ligands show high enantioselectivity up to 75% e.e.
ChemInform Abstract: Asymmetric Direct Vinylogous Michael Reaction Catalyzed by Self‐Assembled Organocatalyst.
Authors: Chen Wei‐Yi , Ouyang Luo , Chen Rui‐Ye , Li Xin‐Sheng 
Published: October 2012

AbstractThe 1:1 mixture of a quinidine‐derived thiourea and L‐proline can catalyze direct vinylogous Michael reactions of nitroolefins with alkylidenemalononitriles in absolute diastereo‐ and high enantioselectivities.
ChemInform Abstract: Enantiopure 3‐Methyl‐3,4‐dihydroisocoumarins and 3‐Methyl‐1,2,3,4‐tetrahydroisoquinolines via Chemoenzymatic Asymmetric Transformations.
Authors: Mangas‐Sanchez Juan , Busto Eduardo , Gotor‐Fernandez Vicente , Goto Vicente 
Published: October 2012

AbstractA new asymmetric synthetic route for the synthesis of enantiomerically pure isocoumarin and isoquinoline derivatives employs stereoselective formation of hydroxypropyl benzonitriles ((S)‐III) as the key step.
ChemInform Abstract: Preparation of Functional Benzofurans and Indoles via Chemoselective Intramolecular Wittig Reactions.
Authors: Lee Yu‐Ting , Jang Yeong‐Jiunn , Syu Siang‐en , Chou Shu‐Chi , Lee Chia‐Jui , Lin Wenwei 
Published: October 2012

AbstractThe reaction is conducted under mild conditions.
ChemInform Abstract: The Hydration of Nitriles Catalyzed by Simple Transition Metal Salt of the Fourth Period with the Aid of Acetaldoxime.
Authors: Ma Xiaoyun , He Ying , Wang Pengcheng , Lu Ming 
Published: October 2012

AbstractThe present new method for the selective hydration of nitriles into amides employs acetaldoxime and a simple transition‐metal catalyst.
ChemInform Abstract: Ti(Oi‐Pr)4‐Promoted Regio‐ and Stereoselective Aminolysis of 2,3‐Epoxy Amides.
Authors: Righi Giuliana , Mantineo Agnese , Suber Lorenza , Mari Alessandra 
Published: October 2012

AbstractA novel simple protocol allows the preparation of highly functionalized vicinal amino alcohols under mild conditions.
ChemInform Abstract: Intercepted Decarboxylative Allylations of Nitroalkanoates.
Authors: Schmitt Meghan , Grenning Alexander J. , Tunge Jon A. 
Published: October 2012

AbstractIt is demonstrated that Pd‐π‐allyl complexes derived from allyl nitronates can undergo decarboxylative allylation through Michael addition/Tsuji—Trost cascades and Tsuji—Trost/decarboxylative protonation.
ChemInform Abstract: Mild and Efficient PtO2‐Catalyzed One‐Pot Reductive Mono‐N‐Alkylation of Nitroarenes.
Authors: Sreedhar Bojja , Rawat Vikas S. 
Published: October 2012

AbstractThe reaction proceeds with a wide variety of aromatic and aliphatic aldehydes to give aromatic amines (III) and (V) in high yields.
ChemInform Abstract: Regio‐ and Stereoselective Multicomponent Coupling Reaction of Alkynes and Dimethylzinc Involving Allylnickelacycles.
Authors: Mori Takamichi , Nakamura Toshiyuki , Onodera Gen , Kimura Masanari 
Published: October 2012

AbstractThe process affords mixtures of E/Z‐isomeric alcohols or (E)‐configurated dicarboxylic esters.
ChemInform Abstract: Efficient Solvent‐Free Aminolysis of Epoxides under (C4H12N2)2 [BiCl6]Cl·H2O Catalysis.
Authors: Lu Hong‐Fei , Sun Lei‐Lei , Le Wen‐Jun , Yang Fei‐Fei , Zhou Jun‐Tao , Gao Yu‐Hua 
Published: October 2012

AbstractIt is demonstrated that BCA is an efficient catalyst for the ring‐opening of epoxides with various amines.
ChemInform Abstract: Rhodium‐Catalyzed Acyl‐Transfer Reaction Between Benzyl Ketones and Thioesters: Synthesis of Unsymmetric Ketones by Ketones CO—C Bond Cleavage and Intermolecular Rearrangement.
Authors: Arisawa Mieko , Kuwajima Manabu , Toriyama Fumihiko , Li Guangzhe , Yamaguchi Masahiko 
Published: October 2012

AbstractThe desired products are obtained together with the esters which result from the acyl transfer (for example Ph‐CO‐S‐Me or Oct‐CO‐O‐Pcp).
ChemInform Abstract: Oxidative Ring Opening of 1,3‐Diarylbenzo[c]heterocycles Using m‐CPBA: Preparation of 1,2‐Diaroylbenzenes.
Authors: Nandakumar Meganathan , Sivasakthikumaran Ramakrishnan , Mohanakrishnan Arasambattu K. 
Published: October 2012

AbstractThe reaction proceeds at room temperature and tolerates a wide range or aromatic and heteroaromatic substituents.
ChemInform Abstract: Palladium‐Catalyzed Esterification of Aryl Halides Using Aryl Formates Without the Use of External Carbon Monoxide.
Authors: Fujihara Tetsuaki , Hosoki Tomoya , Katafuchi Yuko , Iwai Tomohiro , Terao Jun , Tsuji Yasushi 
Published: October 2012

AbstractAryl iodides are also suitable as starting materials.
ChemInform Abstract: Palladium‐Catalyzed Desulfitative Addition of Sodium Sulfinates with α,β‐Unsaturated Carbonyl Compounds.
Authors: Chen Wen , Zhou Xianya , Xiao Fuhong , Luo Jiaying , Deng Guo‐Jun 
Published: October 2012

AbstractThe optimized conditions allow the use of various sodium sulfinates as aryl source in C—C bond formation with α,β‐unsaturated ketones and aldehydes.
ChemInform Abstract: Synthesis of tetra‐Substituted Pyrroles, a Potential Phosphodiesterase 4B Inhibitor, Through Nickel(II) Chloride Hexahydrate Catalyzed One‐Pot Four‐Component Reaction.
Authors: Khan Abu T. , Lal Mohan , Bagdi Prasanta Ray , Basha R. Sidick , Saravanan Parameswaran , Patra Sanjukta 
Published: October 2012

AbstractOne‐pot four‐component condensation of β‐diketo compounds, aldehydes, amines, and nitroalkanes provides access to a wide variety of highly substituted pyrroles.
ChemInform Abstract: 1‐Arylideneamino‐2,2,2‐trichloroethanols as Synthetic Equivalents of Arylideneimines in the Reaction with Cyclopropenone Derivatives.
Authors: Lozinskaya N. A. , Sosonyuk S. E. , Firsova Yu. N. , Proskurnina M. V. , Zefirov N. S. 
Published: October 2012

AbstractThe title compounds (III) and (VII) react regiospecifically with cyclopropanones to give 2,2′‐diaryl‐tetrahydrobipyrrole‐3,3′‐dione derivatives.
ChemInform Abstract: A Novel Approach of Utilizing Quaternized Chitosan as a Catalyst for the Eco‐Friendly Cycloaddition of Epoxides with CO2.
Authors: Tharun Jose , Hwang Yeseul , Roshan Roshith , Ahn Sohyun , Kathalikkattil Amal Cherian , Park Dae‐Won 
Published: October 2012

AbstractQuaternized chitosan is used for the cycloaddition of allyl glycidyl ethers (I) with carbon dioxide under solvent‐free conditions giving cyclic carbonates in high yields.
ChemInform Abstract: Straightforward Copper‐Catalyzed Synthesis of Pyrrolopyrazoles from Halogenated Pyrazolecarbaldehydes.
Authors: Nayak Maloy , Batchu Harikrishna , Batra Sanjay 
Published: October 2012

AbstractDifferent types of halogenated pyrazoles can be used as substrates to produce the desired heterocyclic skeleton in comparable yields.
ChemInform Abstract: A Facile Protocol for the Preparation of 5‐Alkylidene and 5‐Imino Substituted Hydantoins from N,N′‐Disubstituted Parabanic Acids.
Authors: Uengoeren Sevket Hakan , Kani Ibrahim , Guenay Ahmet 
Published: October 2012

AbstractThe title transformation is based on Wittig and aza‐Wittig reaction of parabanic acid derivatives (I) and (IV) with phosphonium ylides.
ChemInform Abstract: Synthesis and Thermogravimetric Studies of 5‐Amino‐2‐ethoxycarbonylaminothiazoles.
Authors: Ray Sibdas , Ray Prabhat Kumar 
Published: October 2012

AbstractThermogravimetric experiments on compounds (I), (III), (IV), and (V) show elimination of EtOH from the ‐NH‐E substituent.
ChemInform Abstract: Reformatsky Reaction Promoted by an Ionic Liquid ([Bmim]Cl) in the Synthesis of β‐Hydroxyl Ketone Derivatives Bearing a Coumarin Unit.
Authors: Zhao Bing , Fan Meng‐jiao , Liu Zhuo , Hu Li‐feng , Song Bo , Wang Li‐yan , Deng Qi‐gang 
Published: October 2012

AbstractThe ionic liquid can be reused at least five times without significant loss of activity.