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文章名     作者     期刊名     摘要     卷     期         如果没有找到您所需要的文献，请点击 ——此处申请     共42条记录   Kingianin A: A New Natural Pentacyclic Compound from Endiandra kingiana [作者：LEVERRIER AURELIE; DAU MARIE ELISE TRAN HUU; RETAILLEAU PASCAL; AWANG KHALIJAH; GUERITTE FRANCOISE; LITAUDON MARC,期刊：Organic Letters, 页码：3638-3641 , 文章类型： Article，,卷期：2010年12-16] A new natural pentacyclic compound, named kingianin A, was isolated as a racemic mixture from the barks of Endiandra kingiana (Lauraceae). Its structure was elucidated by comprehensive analysis of NMR spectroscopic data,... One-Step Synthesis of Quinazolino[3,2-a]quinazolinones via Palladium-Catalyzed Domino Addition/Carboxamidation Reactions [作者：ZENG FANLONG; ALPER HOWARD,期刊：Organic Letters, 页码：3642-3644 , 文章类型： Article，,卷期：2010年12-16] A highly efficient palladium-catalyzed domino process has been developed for the synthesis of quinazolino[3,2-a]quinazolinones by forming five new bonds in a single step. Despite the high density and variety of functiona... Direct Aerobic Photo-Oxidative Synthesis of Aromatic Methyl Esters from Methyl Aromatics via Dimethyl Acetals [作者：HIRASHIMA SHINICHI; NOBUTA TOMOYA; TADA NORIHIRO; MIURA TSUYOSHI; ITOH AKICHIKA,期刊：Organic Letters, 页码：3645-3647 , 文章类型： Article，,卷期：2010年12-16] A useful method for facile synthesis of aromatic methyl esters from methyl aromatics via dimethyl acetals by aerobic photo-oxidation using inexpensive and easily handled CBr4 as catalyst is reported. This is the first ex... Preparation of Primary Amides from Functionalized Organozinc Halides [作者：SCHADE MATTHIAS A; MANOLIKAKES GEORG; KNOCHEL PAUL,期刊：Organic Letters, 页码：3648-3650 , 文章类型： Article，,卷期：2010年12-16] Organozinc halides, which are prepared either by direct zinc insertion or halogen magnesium exchange and subsequent transmetalation with ZnCl2, react smoothly with commercially available trichloroacetyl isocyanate to giv... Designed Molecular Switches: Controlling the Conformation of Benzamido-diphenylacetylenes [作者：JONES IAN M; HAMILTON ANDREW D,期刊：Organic Letters, 页码：3651-3653 , 文章类型： Article，,卷期：2010年12-16] With the goal of creating a molecular switch, the hydrogen-bonded diphenylacetylene structure has been modified such that an equilibrium now exists between two intramolecular H-bonded states. Through X-ray crystallograph... Synthesis of Polysubstituted Dihydropyridines by Four-Component Reactions of Aromatic Aldehydes, Malononitrile, Arylamines, and Acetylenedicarboxylate [作者：SUN JING; XIA ERYAN; WU QUN; YAN CHAOGUO,期刊：Organic Letters, 页码：3678-3681 , 文章类型： Article，,卷期：2010年12-16] A practical and efficient procedure for the preparation of the polysubstituted dihydropyridines was developed through a unique four-component reaction of aromatic aldehydes, malononitrile, arylamines, and acetylenedicarb... Copper-Catalyzed Synthesis of Phenanthridine Derivatives under an Oxygen Atmosphere Starting from Biaryl-2-carbonitriles and Grignard Reagents [作者：ZHANG LINE; ANG GIM YEAN; CHIBA SHUNSUKE,期刊：Organic Letters, 页码：3682-3685 , 文章类型： Article，,卷期：2010年12-16] A copper-catalyzed synthesis of phenanthridine derivatives was developed starting from biaryl-2-carbonitriles and Grignard reagents. The present transformation is carried out by a sequence of nucleophilic addition of Gri... beta-Selective Arabinofuranosylation Using a 2,3-O-Xylylene-Protected Donor [作者：IMAMURA AKIHIRO; LOWARY TODD L,期刊：Organic Letters, 页码：3686-3689 , 文章类型： Article，,卷期：2010年12-16] Reported is a novel stereoselective beta-arabinofuranosylation that makes use of a conformationally restricted 2,3-O-zylylene-protected arabinofuranosyl donor. Optimization of the reaction conditions showed that factors ... Acyclic Stereocontrol in the Catalytic C-H Amination of Benzylic Methylene Groups [作者：NOERDER ANIKE; HERRMANN PAVEL; HERDTWECK EBERHARD; BACH THORSTEN,期刊：Organic Letters, 页码：3690-3692 , 文章类型： Article，,卷期：2010年12-16] Diastereotopos-differentiation is the key feature of the catalytic C-H amination at the benzylic position of substrate 1. Essentially independent of the functional group X (X = COOMe, PO(OEt)(2), SO2Ph, NO2, CN, OAc), th... Enantioselective Synthesis of SSR 241586 by Using an Organo-Catalyzed Henry Reaction [作者：COCHI ANNE; METRO THOMASXAVIER; PARDO DOMINGO GOMEZ; COSSY JANINE,期刊：Organic Letters, 页码：3693-3695 , 文章类型： Article，,卷期：2010年12-16] An organo-catalyzed Henry reaction, applied to an alpha-keto ester, has allowed the enantioselective synthesis of SSR 241586, a 2,2-disubstituted morpholine active in the treatment of schizophrenia and irritable bowel sy... Use of N-Allylidene-1,1-diphenylethanamine as a Latent Acrolein Synthon in the Double Nucleophilic Addition Reaction of Ketene Silyl (Thio)acetals and Allylborolanes [作者：SHIMIZU MAKOTO; KAWANISHI MAMI; MIZOTA ISAO; HACHIYA IWAO,期刊：Organic Letters, 页码：3571-3573 , 文章类型： Article，,卷期：2010年12-16] In the presence of silica gel and water, a mixture of ketene silyl acetals and 2-allyl-4,4,5,5-tetramethyl-1,3,2-dioxaborolane underwent 1,4- and subsequently 1,2-addition with N-allylidene-1,1-diphenylethanamine to give... Practical Synthesis of Quinoxalinones via Palladium-Catalyzed Intramolecular N-Arylations [作者：LUO XUEHONG; CHENARD ETIENNE; MARTENS PETER; CHENG YUNXING; TOMASZEWSKI MIROSLAW J,期刊：Organic Letters, 页码：3574-3577 , 文章类型： Article，,卷期：2010年12-16] A practical and highly efficient route to the synthesis of pharmaceutically interesting quinoxalinone scaffolds is reported. The key step involves an intramolecular palladium-catalyzed N-arylation under microwave irradia... Highly Regioselective Palladium-Catalyzed Direct Arylation of Oxazole at C-2 or C-5 with Aryl Bromides, Chlorides, and Triflates [作者：STROTMAN NEIL A; CHOBANIAN HARRY R; GUO YAN; HE JIAFANG; WILSON JONATHAN E,期刊：Organic Letters, 页码：3578-3581 , 文章类型： Article，,卷期：2010年12-16] Complementary palladium-catalyzed methods for direct arylation of oxazole with high regioselectivity (>100:1) at both C-5 and C-2 have been developed for a wide range of aryl and heteroaryl bromides, chlorides, iodides, ... Bronsted Acid Catalyzed Asymmetric Aldol Reaction: A Complementary Approach to Enamine Catalysis [作者：POUSSE GUILLAUME; LE CAVELIER FABIEN; HUMPHREYS LUKE; ROUDEN JACQUES; BLANCHERT JEROME,期刊：Organic Letters, 页码：3582-3585 , 文章类型： Article，,卷期：2010年12-16] A syn-enantioselective aldol reaction has been developed using Bronsted acid catalysis based on H-8-BINOL-derived phosphoric acids. This method affords an efficient synthesis of various beta-hydroxy ketones, some of whic... Nitrophenylacetonitriles as Versatile Nucleophiles in Enantioselective Organocatalytic Conjugate Additions [作者：BELEN CID M; DUCE SARA; MORALES SARA; RODRIGO EDUARDO; GARCIA RUANO JOSE LUIS,期刊：Organic Letters, 页码：3586-3589 , 文章类型： Article，,卷期：2010年12-16] Arylacetonitriles are able to participate in organocatalytic Michael additions to alpha,beta-unsaturated aldehydes by incorporating a nitro group at the phenyl ring, which acts as a temporary activating group in a remote... A Flexible, Stereoselective Dimethylzinc-Mediated Radical-Anionic Cascade: Dramatic Influence of Additional Lewis Acids [作者：MAURY JULIEN; FERAY LAURENCE; PERFETTI PATRICIA; BERTRAND MICHELE P,期刊：Organic Letters, 页码：3590-3593 , 文章类型： Article，,卷期：2010年12-16] Dimethylzinc-mediated addition of acyloxymethyl radicals to diethyl fumarate led to the highly stereoselective formation of disubstituted gamma-lactones in mean to good yields; this cascade provides a new example of a on...