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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57条记录   Absolute Configurations of Unique Harziane Diterpenes from Trichoderma Species [作者：MIAO FENGPING; LIANG XIAORUI; YIN XIULI; WANG GANG; JI NAIYUN,期刊：Organic Letters, 页码：3815-3817 , 文章类型： Article，,卷期：2012年14-15] Harzianone (2), a new harziane diterpene, was isolated from an alga-endophytic isolate of Trichoderma longibrachiatum. The structure and absolute configuration of 2 were unambiguously identified by NMR and mass spectrome... Highly Efficient Asymmetric Synthesis of Enantiopure Dihydro-1,2-oxazines: Dual-Organocatalyst-Promoted Asymmetric Cascade Reaction [作者：LIN HUE; TAN YU; SUN XINGWEN; LIN GUOQIANG,期刊：Organic Letters, 页码：3818-3821 , 文章类型： Article，,卷期：2012年14-15] A one-pot dual-organocatalyst-promoted asymmetric alpha-aminoxylation/aza-Michael/aldol consendation cascade reaction is presented. The targeted optically active 1,2-oxazine derivatives are synthesized in moderate yields... Synthesis, Isomer Count, and Nuclear Spin Relaxation of H2O@Open-C-60 Nitroxide Derivatives [作者：LI YONGJUN; LEI XUEGONG; LAWLER RONALD G; MURATA YASUJIRO; KOMATSU KOICHI; TURRO NICHOLAS J,期刊：Organic Letters, 页码：3822-3825 , 文章类型： Article，,卷期：2012年14-15] H2O@C-60 derivatives covalently linked to a nitroxide radical were synthesized. The H-1 NMR of the guest H2O revealed the formation of many isomers with broad signals. Reduction to the diamagnetic hydroxylamines sharpene... Amphiphiles Based on D-Glucose: Efficient Low Molecular Weight Gelators [作者：NANDI SUKHENDU; ALTENBACH HANSJOSEF; JAKOB BERND; LANGE KARSTEN; IHIZANE RACHID; SCHNEIDER MANFRED P; GUEN UEMIT; MAYER ANDRE,期刊：Organic Letters, 页码：3826-3829 , 文章类型： Article，,卷期：2012年14-15] A series of novel amphiphiles were synthesized based entirely on renewable resources. Besides their efficacy as supramolecular gelators in a wide variety of organic solvents and also water, their surface properties as su... Reductive Eliminations from lambda(3)-lodanes: Understanding Selectivity and the Crucial Role of the Hypervalent Bond [作者：DE MAGALHAES HALUA PINTO; LUETHI HANS PETER; TOGNI ANTONIO,期刊：Organic Letters, 页码：3830-3833 , 文章类型： Article，,卷期：2012年14-15] This computational study investigates the factors governing the selectivity of the reductive eliminations from rapidly equilibrating isomeric lambda(3)-iodanes derived from a diaryl iodonium salt and a nucleophile. The c... Formal Syntheses of Naturally Occurring Welwitindolinones [作者：FU TSUNGHAO; MCELROY WILLIAM T; SHAMSZAD MARIAM; MARTIN STEPHEN F,期刊：Organic Letters, 页码：3834-3837 , 文章类型： Article，,卷期：2012年14-15] The formal syntheses of N-methylwelwitindolinone C isothiocyanate, N-methylwelwitindolinone C isonitrile, N-methylwelwitindolinone D isonitrile, 3-hydroxy-N-methylwelwitindolinone C isothiocyanate, and 3-hydroxy-N-methyl... Investigation of the Reaction of Dithiocarbamic Acid Salts with Aromatic Aldehydes [作者：HALIMEHJANI AZIM ZIYAEI; SHAYEGAN MOJTABA HAJILOO; HASHEMI MOHAMMAD MAHMOODI; NOTASH BEHROOZ,期刊：Organic Letters, 页码：3838-3841 , 文章类型： Article，,卷期：2012年14-15] A reaction of dithiocarbamic acid salts with carbonyl compounds was investigated for the first time In the presence of BF3 center dot OEt2. The reaction is temperature dependent and gives gem-bis(dithiocarbamates) at 35-... Intermolecular Radical Reaction of O,Se-Acetals Generated via Seleno-Pummerer Rearrangement [作者：URABE DAISUKE; YAMAGUCHI HIROKI; SOMEYA AYUMI; INOUE MASAYUKI,期刊：Organic Letters, 页码：3842-3845 , 文章类型： Article，,卷期：2012年14-15] A new general protocol for the synthesis of O,Se-acetals using the seleno-Pummerer reaction has been developed, and their radical-based two-and three-component coupling reactions were studied. The three-component couplin... Sequential Allenylidene/Vinylidene Cyclization for Stereoselective Construction of Bicyclic Carbocycles from Propargyl Alcohol [作者：MA HAOWEI; LIN YINGCHIH; HUANG SHOULING,期刊：Organic Letters, 页码：3846-3849 , 文章类型： Article，,卷期：2012年14-15] Consecutive cyclization reactions of phenyl propargyl alcohols 1 and 2 are catalyzed by [Ru]NCCH3+ ([Ru] = Cp(PPh3)(2)Ru) in cosolvent CHCl3/MeOH at 60 degrees C, to afford the fused cyclic compounds 11a (R = Me) and 10a... Reactivity of Alkynyl Metal Carbenoids: DFT Study on the Pt-Catalyzed Cyclopropanation of Propargyl Ester Containing 1,3-Diynes [作者：HUANG GENPING; XIE KELEI; LEE DAESUNG; XIA YUANZHI,期刊：Organic Letters, 页码：3850-3853 , 文章类型： Article，,卷期：2012年14-15] DFT/M06 calculations were performed to investigate the mechanism of the Pt-catalyzed intermolecular cyclopropanation of propargyl ester containing diynes with styrene. The results show that the alkynyl Pt-carbenoid forme... Copper(II)-Mediated Dehydrogenative Cross-Coupling of Heteroarenes [作者：MAO ZHIFENG; WANG ZHE; XU ZHAOQING; HUANG FEI; YU ZHENGKUN; WANG RUI,期刊：Organic Letters, 页码：3854-3857 , 文章类型： Article，,卷期：2012年14-15] Cu(OAc)(2)-mediated dehydrogenative cross-coupling between two heteroarenes has been realized in the absence of any other additive. A mechanism involving a formal Cu(II) to Cu(0) route by convergent disproportionation of... Domino Carbopalladation-Cross-Coupling for the Synthesis of 3,3-Disubstituted Oxindoles [作者：SEASHORELUDLOW BRINTON; SOMFAI PETER,期刊：Organic Letters, 页码：3858-3861 , 文章类型： Article，,卷期：2012年14-15] This study examines a domino carbopalladation-cross-coupling reaction for the formation of valuable oxindole scaffolds. Furthermore, the reaction sequence forges vicinal stereocenters In a stereospecific manner through t... Mild Construction of 3-Methyl Tetramic Acids Enabling a Formal Synthesis of Palau'imide [作者：BAI WENJU; JACKSON STEPHEN K; PETTUS THOMAS R R,期刊：Organic Letters, 页码：3862-3865 , 文章类型： Article，,卷期：2012年14-15] A general method to construct 3-methyl-4-O-methylated tetramic acids displaying a C-5 stereocenter is presented. The synthetic sequence employs a Sml(2)-mediated cyclization, whereby the chirality of the emerging tetrami... A Bidirectional S-E ' Strategy for 1,5-syn and 1,5-anti Stereocontrol toward the Synthesis of Complex Polyols [作者：WILLIAMS DAVID R; CLAEBOE CHRISTOPHER D; LIANG BO; ZORN NICOLAS; CHOW NICHOLAS S C,期刊：Organic Letters, 页码：3866-3869 , 文章类型： Article，,卷期：2012年14-15] Studies report a bidirectional S-E' strategy applicable for the stereocontrolled synthesis of nonracemic 1,5-syn and 1,5-anti diols and their derivatives. Nonracemic 1,3,2-diazaborolidine auxiliaries are incorporated by ... A One-Pot-Three-Step Route to Triazolotriazepinoindazolones from Oxazolino-2H-indazoles [作者：CONRAD WAYNE E; RODRIGUEZ KEVIN X; NGUYEN HUY H; FETTINGER JAMES C; HADDADIN MAKHLUF J; KURTH MARK J,期刊：Organic Letters, 页码：3870-3873 , 文章类型： Article，,卷期：2012年14-15] A one-pot-three-step method has been developed for the conversion of oxazolino-2H-indazoles into triazolotriazepinoindazolones with three points of diversity. Step one of this process involves a propargyl bromide-initiat... Efficient Aziridine Synthesis in Metastable Crystalline Phases by Photoinduced Denitrogenation of Crystalline Triazolines [作者：DE LOERA DENISSE; GARCIAGARIBAY MIGUEL A,期刊：Organic Letters, 页码：3874-3877 , 文章类型： Article，,卷期：2012年14-15] The solid-state photodenitrogenation of crystalline triazolines proceeds with high efficiency to form the corresponding aziridines in high chemical yields upon selection of the proper irradiation wavelength. It was shown...