bluuebunny/crossref_metadata_2025 huggingface dataset:
ChemInform Abstract: Efficient Stereoselective Synthesis of Nitrocyclopropanes by the Oxidative Cyclization of Michael Adducts of Nitroolefins with Activated Methylene Compounds.
Authors: Fan Renhua , Ye Yang , Li Weixun , Wang Lingfei
Published: February 2009

ChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 200 leading journals. To access a ChemInform Abstract of an article which was published elsewhere, please select a “Full Text” option. The original article is trackable via the “References” option.
ChemInform Abstract: Magnesium—Cadmium Chloride, a Bimetallic Catalyst System for the Allylation of Aldehydes with Allyl Bromide: An Efficient Protocol for the Synthesis of Homoallylic Alcohols
Authors: Narsaiah A. Venkat , Reddy A. Ramesh , Rao Y. Gopala , Kumar E. Vijay , Prakasham R. S. , Reddy Basi V. Subba , Yadav Jhillu S.
Published: February 2009

ChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 200 leading journals. To access a ChemInform Abstract of an article which was published elsewhere, please select a “Full Text” option. The original article is trackable via the “References” option.
ChemInform Abstract: Silver‐Catalyzed, Manganese‐Mediated Allylation and Benzylation Reactions of Aldehydes and Ketones.
Authors: Barczak Nicholas T. , Jarvo Elizabeth R.
Published: February 2009

ChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 200 leading journals. To access a ChemInform Abstract of an article which was published elsewhere, please select a “Full Text” option. The original article is trackable via the “References” option.
ChemInform Abstract: Nickel‐Catalyzed Reductive Carboxylation of Styrenes Using CO2.
Authors: Williams Catherine M. , Johnson Jeffrey B. , Rovis Tomislav
Published: February 2009

ChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 200 leading journals. To access a ChemInform Abstract of an article which was published elsewhere, please select a “Full Text” option. The original article is trackable via the “References” option.
ChemInform Abstract: Suzuki—Miyaura Coupling Reaction of Boronic Acids and Ethyl Glyoxylate: Synthetic Access to Mandelate Derivatives.
Authors: Francesco Irene Notar , Wagner Alain , Colobert Francoise
Published: February 2009

ChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 200 leading journals. To access a ChemInform Abstract of an article which was published elsewhere, please select a “Full Text” option. The original article is trackable via the “References” option.
ChemInform Abstract: Solvent‐Free Synthesis of α‐Aminonitriles from Aldehydes, Amines and Trimethylsilyl Cyanide Catalyzed by Thallium(III) Chloride Tetrahydrate.
Authors: Majhi Anjoy , Kim Sung Soo , Kadam Santoshi T.
Published: February 2009

ChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 200 leading journals. To access a ChemInform Abstract of an article which was published elsewhere, please select a “Full Text” option. The original article is trackable via the “References” option.
ChemInform Abstract: Unsymmetrical Biaryls by Palladium‐Catalyzed Coupling of Aryl Halides with Internal Reduction.
Authors: Satyanarayana Gedu , Maier Martin E.
Published: February 2009

ChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 200 leading journals. To access a ChemInform Abstract of an article which was published elsewhere, please select a “Full Text” option. The original article is trackable via the “References” option.
ChemInform Abstract: Synthesis of Chiral (Sulfinyl)furyl Oxazoline Ligands and Application to Enantioselective Palladium‐Catalyzed Allylic Alkylation.
Authors: Bunya Yusuke , Sengoku Takaaki , Imamura Yoko , Arai Yoshitsugu
Published: February 2009

ChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 200 leading journals. To access a ChemInform Abstract of an article which was published elsewhere, please select a “Full Text” option. The original article is trackable via the “References” option.
ChemInform Abstract: Ligand‐Free Iron/Copper Cocatalyzed Alkynylation Coupling Reactions.
Authors: Mao Jincheng , Xie Guanlei , Wu Minyan , Guo Jun , Ji Shunjun
Published: February 2009

ChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 200 leading journals. To access a ChemInform Abstract of an article which was published elsewhere, please select a “Full Text” option. The original article is trackable via the “References” option.
ChemInform Abstract: Cross‐Coupling Reactions of Aryl Pivalates with Boronic Acids.
Authors: Quasdorf Kyle W. , Tian Xia , Garg Neil K.
Published: February 2009

ChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 200 leading journals. To access a ChemInform Abstract of an article which was published elsewhere, please select a “Full Text” option. The original article is trackable via the “References” option.
ChemInform Abstract: Polymer‐Supported Sulfonic Acid Catalyzed Three‐Component One‐Pot Synthesis of α‐Amidoalkyl‐β‐naphthols.
Authors: An Li‐Tao , Lu Xiao‐Hua , Ding Fei‐Qing , Jiang Wen‐Qing , Zou Jian‐Ping
Published: February 2009

ChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 200 leading journals. To access a ChemInform Abstract of an article which was published elsewhere, please select a “Full Text” option. The original article is trackable via the “References” option.
ChemInform Abstract: Development of Bifunctional Acyclic Hydroxyl‐guanidine Organocatalyst: Application to Asymmetric Nucleophilic Epoxidation.
Authors: Shin Bongki , Tanaka Shinji , Kita Tetsuya , Hashimoto Yuichi , Nagasawa Kazuno
Published: February 2009

ChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 200 leading journals. To access a ChemInform Abstract of an article which was published elsewhere, please select a “Full Text” option. The original article is trackable via the “References” option.
ChemInform Abstract: A New Chiral Organosulfur Catalyst for Highly Stereoselective Synthesis of Epoxides.
Authors: Gui Yuan , Li Jian , Guo Chang‐Shan , Li Xin‐Liang , Lu Zhi‐Feng , Huang Zhi‐Zhen
Published: February 2009

ChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 200 leading journals. To access a ChemInform Abstract of an article which was published elsewhere, please select a “Full Text” option. The original article is trackable via the “References” option.
ChemInform Abstract: Trans‐Selective Asymmetric Aziridination of Diazoacetamides and N‐Boc Imines Catalyzed by Axially Chiral Dicarboxylic Acid.
Authors: Hashimoto Takuya , Uchiyama Nanase , Maruoka Keiji
Published: February 2009

ChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 200 leading journals. To access a ChemInform Abstract of an article which was published elsewhere, please select a “Full Text” option. The original article is trackable via the “References” option.
ChemInform Abstract: Dicobalt Hexacarbonyl Complexes of Alkynyl Imines in a Sequential Staudinger/Pauson—Khand Process. A Route to New Fused Tricyclic β‐Lactams.
Authors: Olier Clarisse , Azzi Nadia , Gil Gerard , Gastaldi Stephane , Bertrand Michele P.
Published: February 2009

ChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 200 leading journals. To access a ChemInform Abstract of an article which was published elsewhere, please select a “Full Text” option. The original article is trackable via the “References” option.
ChemInform Abstract: Extension of the Library of Biologically Active γ‐Alkylidene Butenolides.
Authors: Novak Petr , Pour Milan , Spulak Marcel , Votruba Ivan , Kotora Martin
Published: February 2009

ChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 200 leading journals. To access a ChemInform Abstract of an article which was published elsewhere, please select a “Full Text” option. The original article is trackable via the “References” option.
ChemInform Abstract: A Straightforward Synthesis of 2,3,4,5‐Tetrasubstituted Tetrahydrofuran Derivatives.
Authors: Aljarilla Ana , Plumet Joaquin
Published: February 2009

ChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 200 leading journals. To access a ChemInform Abstract of an article which was published elsewhere, please select a “Full Text” option. The original article is trackable via the “References” option.
ChemInform Abstract: Highly Stereoselective Synthesis of β,γ‐Disubstituted and α,β,γ‐Trisubstituted Butyrolactones.
Authors: Wu Xiaoyu , Cao Weiguo , Zhang Hui , Chen Jie , Jiang Haiyan , Deng Hongmei , Shao Min , Zhang Jiaping , Chen Huiyun
Published: February 2009

ChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 200 leading journals. To access a ChemInform Abstract of an article which was published elsewhere, please select a “Full Text” option. The original article is trackable via the “References” option.
ChemInform Abstract: Imine Allylation Using 2‐Alkoxycarbonyl Allylboronates as an Expedient Three‐Component Reaction to Polysubstituted α‐exo‐Methylene‐γ‐lactams
Authors: Elford Tim G. , Hall Dennis G.
Published: February 2009

ChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 200 leading journals. To access a ChemInform Abstract of an article which was published elsewhere, please select a “Full Text” option. The original article is trackable via the “References” option.
ChemInform Abstract: Synthesis of Highly Functionalized Pyrrolidines via a Selective Iodide‐Mediated Ring Expansion of Methylenecyclopropyl Amides.
Authors: Scott Mark E. , Lautens Mark
Published: February 2009

ChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 200 leading journals. To access a ChemInform Abstract of an article which was published elsewhere, please select a “Full Text” option. The original article is trackable via the “References” option.
ChemInform Abstract: Organocatalytic Asymmetric Diels—Alder Reactions of 3‐Vinylindoles.
Authors: Gioia Claudio , Hauville Agnes , Bernardi Luca , Fini Francesco , Ricci Alfredo
Published: February 2009

ChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 200 leading journals. To access a ChemInform Abstract of an article which was published elsewhere, please select a “Full Text” option. The original article is trackable via the “References” option.
ChemInform Abstract: The First Chemoselective Tandem Acylation of the Blaise Reaction Intermediate: A Novel Method for the Synthesis of α‐Acyl‐β‐Enamino Esters, Key Intermediate for Pyrazoles.
Authors: Chun Yu Sung , Lee Ki Kon , Ko Young Ok , Shin Hyunik , Lee Sang‐gi
Published: February 2009

ChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 200 leading journals. To access a ChemInform Abstract of an article which was published elsewhere, please select a “Full Text” option. The original article is trackable via the “References” option.
ChemInform Abstract: Microwave‐Assisted Highly Diastereoselective Synthesis of Oxazolidines Derived from Ketones and Amino Alcohols.
Authors: Page Philip C. Bulman , Parkes Genna A. , Buckley Benjamin R. , Heaney Harry , Gholizadeh Mostafa , Wailes J. Steven
Published: February 2009

ChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 200 leading journals. To access a ChemInform Abstract of an article which was published elsewhere, please select a “Full Text” option. The original article is trackable via the “References” option.
ChemInform Abstract: Efficient Synthesis of 2‐Thioxo‐1,3‐thiazolanes from Primary Amines, CS2, and Ethyl Bromopyruvate.
Authors: Yavari Issa , Seyfi Samereh , Hossaini Zinatossadat , Sabbaghan Maryam , Shirgahi‐Talari Faezah
Published: February 2009

ChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 200 leading journals. To access a ChemInform Abstract of an article which was published elsewhere, please select a “Full Text” option. The original article is trackable via the “References” option.
ChemInform Abstract: Trimethylsilyl‐1,3,4‐oxadiazoles — New Useful Synthons for the Synthesis of Various 2,5‐Disubstituted‐1,3,4‐oxadiazoles.
Authors: Zarudnitskii Evgenij V. , Pervak Igor I. , Merkulov Anatolij S. , Yurchenko Aleksandr A. , Tolmachev Andrej A.
Published: February 2009

ChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 200 leading journals. To access a ChemInform Abstract of an article which was published elsewhere, please select a “Full Text” option. The original article is trackable via the “References” option.
ChemInform Abstract: A Highly Efficient Biomimetic Aromatization of Hantzsch‐1,4‐dihydropyridines with t‐Butylhydroperoxide, Catalyzed by Iron(III) Phthalocyanine Chloride.
Authors: Filipan‐Litvic Mirela , Litvic Mladen , Vinkovic Vladimir
Published: February 2009

ChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 200 leading journals. To access a ChemInform Abstract of an article which was published elsewhere, please select a “Full Text” option. The original article is trackable via the “References” option.
ChemInform Abstract: Straightforward Strategy for the Stereoselective Synthesis of Spiro‐Fused (C‐5)Isoxazolino‐ or (C‐3)Pyrazolino‐(C‐3)quinolin‐2‐ones from Baylis—Hillman Adducts by 1,3‐Dipolar Cycloaddition and Reductive Cyclization.
Authors: Singh Virender , Singh Vijay , Batra Sanjay
Published: February 2009

ChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 200 leading journals. To access a ChemInform Abstract of an article which was published elsewhere, please select a “Full Text” option. The original article is trackable via the “References” option.
ChemInform Abstract: Palladium‐Catalyzed Cyclization/Carbonylation as a Direct Route to 4‐[(Methoxycarbonyl)methyl]‐3,4‐dihydroisoquinolinones (IV), (VI).
Authors: Ardizzoia G. Attilio , Beccalli Egle M. , Borsini Elena , Brenna Stefano , Broggini Gianluigi , Rigamonti Micol
Published: February 2009

ChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 200 leading journals. To access a ChemInform Abstract of an article which was published elsewhere, please select a “Full Text” option. The original article is trackable via the “References” option.
ChemInform Abstract: Palladium‐Catalyzed Synthesis of Selectively Substituted Phenanthridine Derivatives.
Authors: Della Ca Nicola , Motti Elena , Catellani Marta
Published: February 2009

ChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 200 leading journals. To access a ChemInform Abstract of an article which was published elsewhere, please select a “Full Text” option. The original article is trackable via the “References” option.
ChemInform Abstract: Syntheses of Tetrahydro‐β‐carbolines via a Tandem Hydroformylation—Pictet—Spengler Reaction. Scope and Limitations.
Authors: Bondzic Bojan P. , Eilbracht Peter
Published: February 2009

ChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 200 leading journals. To access a ChemInform Abstract of an article which was published elsewhere, please select a “Full Text” option. The original article is trackable via the “References” option.
ChemInform Abstract: The First Example of Tetrahydrothieno[3,2‐d]azocines Synthesis.
Authors: Voskressensky Leonid G. , Listratova Anna V. , Borisova Tatiana N. , Kovaleva Svetlana A. , Borisov Roman S. , Varlamov Alexey V.
Published: February 2009

ChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 200 leading journals. To access a ChemInform Abstract of an article which was published elsewhere, please select a “Full Text” option. The original article is trackable via the “References” option.
ChemInform Abstract: An Eco‐Friendly Procedure for the Efficient Synthesis of Dialkyl α‐Aminophosphonates in Aqueous Media.
Authors: Sobhani Sara , Safaei Elham , Asadi Mozaffar , Jalili Fariba
Published: February 2009

ChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 200 leading journals. To access a ChemInform Abstract of an article which was published elsewhere, please select a “Full Text” option. The original article is trackable via the “References” option.
ChemInform Abstract: Synthesis and Characterization of 2,7‐Bis(pentafluorophenylethynyl)hexafluoroheterofluorenes: New Materials with High Electron Affinities.
Authors: Geramita Katharine , McBee Jennifer , Tao Yuefei , Segalman Rachel A. , Tilley T. Don
Published: February 2009

ChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 200 leading journals. To access a ChemInform Abstract of an article which was published elsewhere, please select a “Full Text” option. The original article is trackable via the “References” option.
ChemInform Abstract: Enantioselective Strecker‐Type Reaction of Phosphinoyl Ketimines Catalyzed by a Chiral Zr‐Bipyridyldiol Catalyst.
Authors: Chen Yi‐Jing , Chen Chinpiao
Published: February 2009

ChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 200 leading journals. To access a ChemInform Abstract of an article which was published elsewhere, please select a “Full Text” option. The original article is trackable via the “References” option.
ChemInform Abstract: The First Stereospecific Arylation of (Z)‐Germyl(stannyl)ethenes with an Aryl Halide or Heteroaryl Halide under Palladium‐Catalysis.
Authors: Nakano Taichi , et al. et al.
Published: February 2009

ChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 200 leading journals. To access a ChemInform Abstract of an article which was published elsewhere, please select a “Full Text” option. The original article is trackable via the “References” option.
ChemInform Abstract: Competition Between Planar and Central Chiral Control Elements in Nucleophilic Addition to Ferrocenyl Imine Derivatives.
Authors: Joly Kevin M. , Wilson Claire , Blake Alexander J. , Tucker James H. R. , Moody Christopher J.
Published: February 2009

ChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 200 leading journals. To access a ChemInform Abstract of an article which was published elsewhere, please select a “Full Text” option. The original article is trackable via the “References” option.
ChemInform Abstract: Total Synthesis of Ciliatamides A—C: Stereochemical Revision and the Natural Product‐Guided Synthesis of Unnatural Analogues.
Authors: Lewis Jana A. , Daniels R. Nathan , Lindsley Craig W.
Published: February 2009

ChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 200 leading journals. To access a ChemInform Abstract of an article which was published elsewhere, please select a “Full Text” option. The original article is trackable via the “References” option.
ChemInform Abstract: Et3N‐Promoted Reaction of Acetylenic Ketones with N‐(Diphenylmethylene)glycinates: An Efficient Synthesis of α,β‐Dehydroamino Acid Derivatives.
Authors: Zhou Qing‐Fa , Wu Quan‐Ping , Xue Song
Published: February 2009

ChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 200 leading journals. To access a ChemInform Abstract of an article which was published elsewhere, please select a “Full Text” option. The original article is trackable via the “References” option.
ChemInform Abstract: Total Synthesis of (.+‐.)‐Protoemetinol (I).
Authors: Chang Jung‐Kai , Chang Bo‐Rui , Chuang Yu‐Hsiu , Chang Nein‐Chen
Published: February 2009

ChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 200 leading journals. To access a ChemInform Abstract of an article which was published elsewhere, please select a “Full Text” option. The original article is trackable via the “References” option.
ChemInform Abstract: Synthesis of the Reported Structure of the Bisbenzoquinone Lanciaquinone, Isolated from Maesa lanceolata.
Authors: Guillonneau Loic , Taddei David , Moody Christopher J.
Published: February 2009

ChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 200 leading journals. To access a ChemInform Abstract of an article which was published elsewhere, please select a “Full Text” option. The original article is trackable via the “References” option.
ChemInform Abstract: A General and Highly Efficient Synthesis of Novel Nonactic Acid Analogues.
Authors: Coutable Ludovic , Saluzzo Christine
Published: February 2009

ChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 200 leading journals. To access a ChemInform Abstract of an article which was published elsewhere, please select a “Full Text” option. The original article is trackable via the “References” option.
ChemInform Abstract: Activity of a Hydroxybibenzyl Bryophyte Constituent Against Leishmania spp. and Trypanosoma cruzi: In silico, in vitro and in vivo Activity Studies.
Authors: Pandolfi Enrique , et al. et al.
Published: February 2009

ChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 200 leading journals. To access a ChemInform Abstract of an article which was published elsewhere, please select a “Full Text” option. The original article is trackable via the “References” option.
ChemInform Abstract: First Synthesis of (+)‐Myxothiazol A.
Authors: Iwaki Yuki , Kaneko Masahiro , Akita Hiroyuki
Published: February 2009

ChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 200 leading journals. To access a ChemInform Abstract of an article which was published elsewhere, please select a “Full Text” option. The original article is trackable via the “References” option.
ChemInform Abstract: Synthesis and Self‐Assembly of Dibenzo[jk,mn]naphtho[2,1,8‐fgh]thebenidinium Derivatives.
Authors: Wu Dongqing , Feng Xinliang , Takase Masayoshi , Haberecht Monika C. , Muellen Klaus
Published: February 2009

ChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 200 leading journals. To access a ChemInform Abstract of an article which was published elsewhere, please select a “Full Text” option. The original article is trackable via the “References” option.
ChemInform Abstract: Upon the Intrinsic Optical Properties of Oligo(p‐phenyleneethynylene)s (OPEs). Synthesis of OPE3 for Experimental Gas‐Phase Absorption Studies.
Authors: Ryhding Torben , Kirketerp Maj‐Britt Suhr , Kadhane Umesh , Lykkegaard Morten Koecks , Panja Subhasis , Nielsen Steen Broensted , Nielsen Mogens Broensted
Published: February 2009

ChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 200 leading journals. To access a ChemInform Abstract of an article which was published elsewhere, please select a “Full Text” option. The original article is trackable via the “References” option.
ChemInform Abstract: Studying Nanoscale Magnetism and Its Dynamics with Soft X‐Ray Microscopy
Authors: Fischer Peter
Published: February 2009

ChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 200 leading journals. To access a ChemInform Abstract of an article which was published elsewhere, please select a “Full Text” option. The original article is trackable via the “References” option.
ChemInform Abstract: Spin Fluctuation Driven Structural Phase Transitions in Itinerant Electron Magnets. γ→α Transition in Ce‐Based Compounds
Authors: Solontsov A. , Mirmelstein A.
Published: February 2009

ChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 200 leading journals. To access a ChemInform Abstract of an article which was published elsewhere, please select a “Full Text” option. The original article is trackable via the “References” option.
ChemInform Abstract: Immobilization of Transition Metal Complexes and Their Application to Enantioselective Catalysis
Authors: Crosman Adrian , Schuster Carmen , Wagner Hans‐Hermann , Batorfi Melinda , Cubillos Jairo , Hoelderich Wolfgang
Published: February 2009

ChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 200 leading journals. To access a ChemInform Abstract of an article which was published elsewhere, please select a “Full Text” option. The original article is trackable via the “References” option.
ChemInform Abstract: Catalytic Asymmetric Synthesis: Chemical Methods. Sulfoximines as Ligands in Asymmetric Metal Catalysis
Authors: Bolm Carsten
Published: February 2009

ChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 200 leading journals. To access a ChemInform Abstract of an article which was published elsewhere, please select a “Full Text” option. The original article is trackable via the “References” option.
ChemInform Abstract: The “Daniphos” Ligands: Synthesis and Catalytic Applications
Authors: Salzer Albrecht , Braun Wolfgang
Published: February 2009

ChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 200 leading journals. To access a ChemInform Abstract of an article which was published elsewhere, please select a “Full Text” option. The original article is trackable via the “References” option.
ChemInform Abstract: Asymmetric Synthesis Based on Sulfonimidoyl‐Substituted Allyltitanium Complexes
Authors: Gais Hans‐Joachim
Published: February 2009

ChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 200 leading journals. To access a ChemInform Abstract of an article which was published elsewhere, please select a “Full Text” option. The original article is trackable via the “References” option.
ChemInform Abstract: The New Versatility of Boronic Acids
Authors: Graening Timm
Published: February 2009

ChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 200 leading journals. To access a ChemInform Abstract of an article which was published elsewhere, please select a “Full Text” option. The original article is trackable via the “References” option.
ChemInform Abstract: Selecting and Controlling API Crystal Form for Pharmaceutical Development: Strategies and Processes
Authors: Yin Shawn X. , Grosso John A.
Published: February 2009

ChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 200 leading journals. To access a ChemInform Abstract of an article which was published elsewhere, please select a “Full Text” option. The original article is trackable via the “References” option.
ChemInform Abstract: Advances in Automatic, Manual and Microwave‐Assisted Solid‐Phase Peptide Synthesis
Authors: Sabatino Giuseppina , Papini Anna M.
Published: February 2009

ChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 200 leading journals. To access a ChemInform Abstract of an article which was published elsewhere, please select a “Full Text” option. The original article is trackable via the “References” option.
ChemInform Abstract: Platinum Dichloride Promoted Cycloisomerization of Unsaturated Propargylic Compounds
Authors: Marco‐Contelles Jose
Published: February 2009

ChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 200 leading journals. To access a ChemInform Abstract of an article which was published elsewhere, please select a “Full Text” option. The original article is trackable via the “References” option.
ChemInform Abstract: Solid/Liquid Separation Through Cake Filtration
Authors: Anlauf H.
Published: February 2009

ChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 200 leading journals. To access a ChemInform Abstract of an article which was published elsewhere, please select a “Full Text” option. The original article is trackable via the “References” option.
NMR studies of dextromethorphan in both isotropic and anisotropic states
Authors: Swarbrick James D. , Ashton Trent D.
Published: February 2009

Herein, we present the solution‐state NMR studies on dextromethorphan (1) under both isotropic and anisotropic conditions. From the measurement of 22 residual dipolar couplings using a stretched polystyrene gel (PS), we show that accurate and detailed structural information is readily determined including the relative stereochemical assignments of chiral centers, validation of diastereomer configuration, and the stereospecific assignment of the seven pairs of prochiral protons. This utility of PS gels is thus showcased to obtain rapid, accurate conformational, and relative configuration information in this important class of compounds without recourse to X‐ray analysis. Chirality 2010. © 2009 Wiley‐Liss, Inc.
Spin Multiplicity Dependence of Nonlinear Optical Properties
Authors: Jha Prakash Chandra , Rinkevicius Zilvinas , Ågren Hans
Published: February 2009

Spin‐restricted time‐dependent DFT for open‐shell systems is used to study the spin multiplicity dependence of nonlinear optical coefficients. Calculations are performed for various spin states of the pyrrole radical (see figure). The results indicate a substantial dependence on spin multiplicity of the NLO properties, which are sensitive to the basis set compared to closed shells at the DFT level of theory.

magnified image

Open‐shell spin‐restricted time‐dependent density functional theory is applied to explore the spin multiplicity dependence of linear and nonlinear optical properties. An open‐shell neutral conjugated system, the C4H4N radical in the doublet X2A2, quartet X4A2, and sextet X6A1 states, is chosen as a model system to illustrate various aspects of the theory. It is found that irrespective of the exchange‐correlation functional employed, the components of the polarizability α(−ω,ω) and first hyperpolarizability β(−2 ω,ω,ω) show very different dependency with respect to the multiplicity, with an increasing trend for higher spin states. This is rationalized by the decrease in conjugation and stability of the system with increasing multiplicity, and by the way the interaction between unpaired electrons and the external field is shielded by remaining electrons of the molecule. The study suggests the applicability of open‐shell systems for frequency‐dependent nonlinear optical properties and for the possibility of spin control for such properties.
Relationship between the Molecular Structure of Cyanine Dyes and the Vibrational Fine Structure of their Electronic Absorption Spectra
Authors: Mustroph Heinz , Reiner Knut , Mistol Jürgen , Ernst Steffen , Keil Dietmar , Hennig Lothar
Published: February 2009

Vibronic sub‐bandsin the electronic absorption spectra of symmetrical cyanine dyes (see picture) are attributed to the symmetric CC valence vibration of the polymethine chain in the excited state. The3J(H,H) coupling constants in the polymethine chain can be used to characterize the bond localization within the chain in the ground state and thus to explain the intensity distribution of the sub‐bands.

magnified image

Electronic absorption spectra of symmetrical cyanine dyes show vibronic sub‐bands, attributed to the symmetric CC valence vibration of the polymethine chain in the electronic excited state. Displacements in the equilibrium configuration between electronic ground and excited states of cyanine dyes lead to longer CC bonds in the excited state. Additionally, in the electronic ground state, a small degree of bond localisation always remains in the chain depending on the different heterocyclic terminal groups. Our investigations suggest that we can use3J(H,H) coupling constants in the polymethine chain to characterise the bond localisation within the chain. Based on these values and the Franck–Condon principle, the intensity distribution among the vibrational sub‐bands can be explained.
Therapist characteristics influencing the quality of alliance in long‐term psychotherapy
Authors: Hersoug Anne Grete , Høglend Per , Havik Odd , von der Lippe Anna , Monsen Jon
Published: February 2009

This study explored therapist characteristics associated with the development of working alliance in long‐term therapies, up to 120 sessions. The quality of working alliance was rated by both patients (n = 201) and therapists (n = 61) at sessions 3, 12, 20 and every 20th successive session. Therapists' self‐reported scores on the ‘cold/detached’ dimension of Inventory of Interpersonal Problems‐64 tapping therapists' interpersonal style, such as being distanced, disconnected or indifferent, had a negative impact on the working alliance as rated both by patients and therapists. More professional training was associated with poorer quality of working alliance, as rated by patients. A trend indicated that more experienced therapists rated the alliance lower at all sessions. Therapists' report of better maternal care up to their adolescence had a positive impact on patients' rating of alliance. Clinical implications are discussed. Copyright © 2009 John Wiley & Sons, Ltd.
The use of the repertory grid technique to examine staff beliefs about clients with dual diagnosis
Authors: Ralley Catriona , Allott Rory , Hare Dougal Julian , Wittkowski Anja
Published: February 2009

Aim: This paper reports a study exploring how individual psychiatric staff construes clients with psychosis who misuse substances.

Background: A dual diagnosis of substance misuse is common in clients with psychosis. Previous studies have suggested that psychiatric staff feel ill‐equipped to work with these clients, and hold negative views of them, affecting client care and recovery. Understanding staff attitudes can inform training and practice.

Method: Twelve psychiatric nursing staff working in an inpatient service for adults with enduring mental health difficulties in England were interviewed. Using a repertory grid technique, staff were asked to describe clients and acquaintances who did and did not misuse substances, themselves and colleagues.

Findings: All staff made critical judgements of some clients, particularly clients with dual diagnosis, but were less judgemental towards acquaintances who misused substances. Staff who used fewer dimensions to construe people appeared to make a clear distinction between clients and non‐clients. This distinction was not apparent for staff with more cognitively complex construct systems. Specific factors that could be implicated in the organization of individuals' construct systems included personal experience of services as a carer; these staff made less distinction between clients and non‐clients.

Conclusion: Further training is needed for staff working with clients with a dual diagnosis. Training packages need to consider the personal experiences and views of staff. Reducing the boundaries between staff and clients might enable staff to better understand the actions of clients and improve client care. Copyright © 2009 John Wiley & Sons, Ltd.
The post‐traumatic embitterment disorder Self‐Rating Scale (PTED Scale)
Authors: Linden Michael , Baumann Kai , Lieberei Barbara , Rotter Max
Published: February 2009

The present study introduces the Post‐Traumatic Embitterment Disorder Self‐Rating Scale (PTED Scale), which asks for prolonged and disabling embitterment reactions in the aftermath of negative life events. The PTED Scale was administered to four independent samples of patients and normals. Internal consistency and test–retest reliability were high. Factor analysis indicated a two‐factor solution, accounting for 55.25% of the total variance. The PTED Scale discriminated significantly between patients who had been classified according to clinical judgement as suffering from pathological embitterment. Correlations with related instruments demonstrated good convergent validity. Data obtained from a non‐clinical sample indicated a prevalence of clinically relevant embitterment in the general population of about 2.5%. The PTED Scale is a reliable and valid measure for embitterment as an emotional reaction to a negative life event. Furthermore, results demonstrate that reactive embitterment in connection to a negative life event is a prevalent phenomenon among clinical and non‐clinical populations. Copyright © 2009 John Wiley & Sons, Ltd.
Design of high‐gain wide‐band harmonic self‐oscillating mixers
Authors: Fernández M. , Ver Hoeye S. , Herrán L. F. , Las Heras F.
Published: February 2009

In this work, a new design method is presented for the design of wide‐band harmonic self‐oscillating mixers (HSOM) with high conversion gain. The optimum design for the HSOM circuit is obtained using bifurcation analysis‐ and control‐techniques in combination with nonlinear optimization techniques based on the use of an auxiliary generator. The design method is illustrated through the design of an 11.25–1.5 GHz third harmonic self‐oscillating mixer (3HSOM) with a 6.5 dB down‐conversion gain over a 1.6 GHz bandwidth. It is also demonstrated how the frequency variation of the conversion gain can be shaped by means of the use of bifurcation control techniques. A good agreement between the simulated and experimental results has been found. Copyright © 2009 John Wiley & Sons, Ltd.
Allylic Amination Using Well‐Defined [(NHC)Pd(η3‐allyl)Cl] Complexes and PPh3
Authors: Roland Sylvain , Cotet William , Mangeney Pierre
Published: February 2009

The allylic amination reaction catalyzed by [(NHC)Pd(allyl)Cl] complexes has been studied, and the presence of PPh3 found to be essential for the catalytic system to be active.[(1‐Mesityl‐3‐methylimidazol‐2‐ylidene)Pd(η3‐C3H5)Cl] has been used to optimize the conditions of the reaction with (E)‐1,3‐diphenylprop‐3‐enyl acetate and benzylamine under biphasic conditions (aqueous base/CH2Cl2). The best yields of isolated product (98 %) were obtained using aqueous 1 M K2CO3. The influence of the NHC ligand and the allyl fragment on the pre‐catalyst was also examined. Two new neutral [(NHC)Pd(η3‐1‐RC3H4)Cl] complexes [NHC = 1‐mesityl‐3‐methylimidazol‐2‐ylidene or 1‐(2,6‐diisopropylphenyl)‐3‐methylimidazol‐2‐ylidene; R = H or Ph] have been prepared and a decrease of the reaction time observed with the former. NMR studies have shown that this pre‐catalyst is more easily activated than its η3‐allyl analogue and that the predominant activation pathway involves attack of the amine at the allyl fragment. This reaction occurs exclusively in the presence of PPh3, thus suggesting that cationic [(NHC)Pd(allyl)(PPh3)]+ complexes, which are more electrophilic, are formed in situ and allow the amine to react with the allyl fragment. A tetrafluoroborate cationic complex has therefore been prepared from [(NHC)Pd(allyl)Cl], PPh3, and AgBF4 and fully characterized. This complex is an active pre‐catalyst in the allylic amination reaction. The scope of the reaction was examined under the optimized reaction conditions with several different nitrogen nucleophiles and allylic acetates. The amination products were obtained in yields ranging from 73 to >98 %, except for that from cyclohexenyl acetate and dibenzylamine. Finally, the reaction performed directly with the allylic alcohol and benzylamine led to a mixture of allylic amines in 9 % yield. (© Wiley‐VCH Verlag GmbH & Co. KGaA, 69451 Weinheim, Germany, 2009)
Enantioseparation of amino acid amides on an (S)‐N‐(3,5‐dinitrobenzoyl)leucine‐N‐phenyl‐N‐propylamide‐bonded silica in normal phase CEC
Authors: Kim In Whan , Hyun Myung Ho , Gwon Jurim , Jin Juhyeon , Park Jung Hag
Published: February 2009

(S)‐N‐(3,5‐Dinitrobenzoyl)leucine‐N‐phenyl‐N‐propylamide‐bonded silica was used as a chiral stationary phase for separation of enantiomers of some racemic π‐acidic and π‐basic amino acid amides in normal phase capillary LC (CLC) and CEC. For generation of EOF in CEC, different amounts of water were added to n‐hexane–isopropanol (IPA) eluents. Influences of added water and composition of polar modifier on retention, enantioselectivity and resolution were studied. Generally better separation was obtained in the eluents of lower water content. Shorter retention and better enantioselectivities were observed in the eluents of higher IPA content, whereas resolution became lower as IPA content was increased. Enantioselectivities were comparable but resolutions were much better in CEC than CLC.
Rapid determination of superoxide free radical in hepatocellular carcinoma cells by MCE with LIF
Authors: Liu Xin , Li Qingling , Gong Xiaocong , Li Hongmin , Chen Zhenzhen , Tong Lili , Tang Bo
Published: February 2009

A method for determination of superoxide free radical (O2–•) based on MCE with LIF was developed. Fluorescent reagent 2‐chloro‐1, 3‐dibenzothiazolinecyclohexene, which was synthesized in our laboratory, was employed as the labeling reagent, the highest derivatization efficiency was obtained in 20 mM HEPES buffer (pH 7.4) for 10 min at 37°C. Optimal determination of O2–• was achieved on a glass microchip, using 50 mM HEPES buffer (pH 7.4). Under the optimized conditions, linearity of response was obtained in the range of 4.0×10−7–1.0×10−5 M, the detection limit (S/N=3) was 0.15 μM, the RSDs of migration time and peak area were 2.6 and 3.8%, respectively. Interference experiment was investigated and the result indicates that 1000‐fold molar excess of hydrogen peroxide does not interfere with the determination of O2–• in complex system. Finally, the method has been successfully applied to determine O2–• in hepatocellular carcinoma cells as well as phorbol 12‐myristate 13‐acetate stimulated RAW264.7 macrophages. The average recoveries were 97.3 and 98.6%, respectively.
Three‐dimensional behavior of a spherical self‐centering precast prestressed pile isolator
Authors: Jünemann Rosita , de la Llera Juan C. , Besa Jaime , Almazán José L.
Published: February 2009

A 3D analytical formulation of a precast prestressed pile (PPP) seismic isolator with top and bottom spherical rolling kinematic constraints is proposed. The PPP isolator was initially conceived as a low‐cost seismic isolation (and foundation) system for housing units of low‐income people. Since these structures are usually located at sites with poor soil conditions, the PPP isolator also works as a foundation pile by connecting the superstructure with more competent soil layers. The non‐holonomic nature of the rolling constraint is dealt with by a structural formulation. The proposed 3D formulation is validated by numerical results obtained from a previously proposed formulation for the 2D problem, and a contact finite element model in ANSYS (www.ansys.com). Other issues associated with the dynamic response of isolated structures with the PPP are also examined, such as expected response reductions, variation in the axial force of the central prestressed cable, and torsional response amplifications. Finally, guidelines to estimate the actual 3D response using 2D analysis results are investigated. Copyright © 2009 John Wiley & Sons, Ltd.
Improving the inverse compensation method for real‐time hybrid simulation through a dual compensation scheme
Authors: Chen Cheng , Ricles James M.
Published: February 2009

Real‐time hybrid simulation combines experimental testing of physical substructure(s) and numerical simulation of analytical substructure(s), and thus enables the complete structural system to be considered during an experiment. Servo‐hydraulic actuators are typically used to apply the command displacements to the physical substructure(s). Inaccuracy and instability can occur during a real‐time hybrid simulation if the actuator delay due to servo‐hydraulic dynamics is not properly compensated. Inverse compensation is a means to negate actuator delay due to inherent servo‐hydraulic actuator dynamics during a real‐time hybrid simulation. The success of inverse compensation requires the use of a known accurate value for the actuator delay. The actual actuator delay however may not be known before the simulation. An estimation based on previous experience has to be used, possibly leading to inaccurate experimental results. This paper presents a dual compensation scheme to improve the performance of the inverse compensation method when an inaccurately estimated actuator delay is used in the method. The dual compensation scheme modifies the predicted displacement from the inverse compensation procedure using the actuator tracking error. Frequency response analysis shows that the dual compensation scheme enables the inverse compensation method to compensate for actuator delay over a range of frequencies when an inaccurately estimated actuator delay is utilized. Real‐time hybrid simulations of a single‐degree‐of‐freedom system with an elastomeric damper are conducted to experimentally demonstrate the effectiveness of the dual compensation scheme. Exceptional experimental results are shown to be achieved using the dual compensation scheme without the knowledge of the actual actuator delay a priori. Copyright © 2009 John Wiley & Sons, Ltd.
Steady‐state heat flux measurements in radiative and mixed radiative–convective environments
Authors: Lam Cecilia S. , Weckman Elizabeth J.
Published: February 2009

The steady‐state responses of four heat flux gauges (Schmidt–Boelter, Gardon, directional flame thermometer (DFT) and hemispherical heat flux gauge (HFG)) were examined under various radiative and convective heating conditions. In radiative environments, Gardon measurements were up to 8% higher than Schmidt–Boelter measurements, but in mixed radiative–convective environments, Gardon measurements were 8–18% below those of the Schmidt–Boelter gauge. This difference increased as the convective portion of the total heat transfer increased, due to discrepancies between the radiation‐based calibration environment and the application environment. The DFT data in radiative environments were comparable with the Schmidt–Boelter and Gardon values (within 12%), with the difference largely attributed to natural convection losses from the DFT. In mixed environments, the DFT values were significantly lower than those of the Schmidt–Boelter gauge due to differences in the surface temperatures of the gauges, resulting in the convective flow cooling, rather than heating, the DFT. The HFG heat flux estimates were 35–48% lower than the Schmidt–Boelter measurements under radiative conditions, influenced by large conduction losses from the sensor plate to the gauge housing. Lateral conduction due to a mismatch between the experimental convective flow outlet diameter and the gauge width also affected results from the DFT and HFG. Copyright © 2009 John Wiley & Sons, Ltd.