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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   Unexpected Multiple Electrophilic Addition Reaction of (Z)-Alk-2-en-4-ynoates with N,N-Dibromo-p-toluenesulfonamide (TsNBr2): A Highly Diastereoselective Synthesis of Densely Functionalized Aziridines [作者：SHEN RUWEI; HUANG XIAN,期刊：Organic Letters, 页码：5698-5701 , 文章类型： Article，,卷期：2009年11-24] ;A novel electrophilic addition reaction of (Z)-alk-2-en-4-ynoates and TsNBr2 is reported, providing a facile and highly stereoselective synthesis of densely functionalized aziridine derivatives. The Trichloromethide and Bromodichloromethide Carbanions [作者：MOSS ROBERT A; ZHANG MIN; KROGHJESPERSEN KARSTEN,期刊：Organic Letters, 页码：5702-5704 , 文章类型： Article，,卷期：2009年11-24] Reactions of photochemically generated dichlorocarbene with chloride or bromide ions afford trichloromethide or bromodichloromethide carbanions, the central intermediates in the classical base-catalyzed generation of dic... Microwave-Assisted Domino and Multicomponent Reactions with Cyclic Acylketenes: Expeditious Syntheses of Oxazinones and Oxazindiones [作者：PRESSET MARC; COQUEREL YOANN; RODRIGUEZ JEAN,期刊：Organic Letters, 页码：5706-5709 , 文章类型： Article，,卷期：2009年11-24] The microwave-assisted Wolff rearrangement of cyclic 2-diazo-1,3-diketones In the presence of aldehydes and primary amines provides a straightforward access to functionalized bi- and pentacyclic oxazinones following an u... Silver-Catalyzed Protodecarboxylation of Heteroaromatic Carboxylic Acids [作者：LU PENGFEI; SANCHEZ CAROLINA; CORNELLA JOSEP; LARROSA IGOR,期刊：Organic Letters, 页码：5710-5713 , 文章类型： Article，,卷期：2009年11-24] A simple and highly efficient protodecarboxylation procedure for a variety of heteroaromatic carboxylic acids catalyzed by Ag2CO3 and AcOH in DMSO is described. This methodology can also perform the selective monoprotode... Highly Enantioselective Ketone-Ene Reactions of Trifluoropyruvate: Significant Counterion Effect of the In(III)-PyBox Complex [作者：ZHAO JUNFENG; TJAN TEGUHBUDIONO W; TAN BOONHONG; LOH TECKPENG,期刊：Organic Letters, 页码：5714-5716 , 文章类型： Article，,卷期：2009年11-24] A chiral indium(III)-pybox complex catalyzed asymmetric ketone-ene reaction of trifluoropyruvate is described. Both aromatic and aliphatic 1,1-disubstituted alkenes reacted smoothly to give the enantioenriched tertiary h... Alasmontamine A, A First Tetrakis Monoterpene Indole Alkaloid from Tabernaemontana elegans [作者：HIRASAWA YUSUKE; MIYAMA SAORI; HOSOYA TAKAHIRO; KOYAMA KOICHIRO; RAHMAN ABDUL; KUSUMAWATI IDHA; ZAINI NOOR CHOLIES; MORITA HIROSHI,期刊：Organic Letters, 页码：5718-5721 , 文章类型： Article，,卷期：2009年11-24] A novel tetrakis monoterpene indole alkaloid, alasmontamine A (1) consisting of bis-vobtusine-type skeletons, was isolated from the leaves of Tabernaemontana elegans. The structure including the relative stereochemistry ... Suppressed beta-Effect of Silicon in 3-Silylated Monocyclic beta-Lactams: The Role of Antiaromaticity [作者：BAG SUBHENDU SEKHAR; KUNDU RAJEN; BASAK AMIT; SLANINA ZDENEK,期刊：Organic Letters, 页码：5722-5725 , 文章类型： Article，,卷期：2009年11-24] The beta-stabilizing effect of silicon substituent at C-3 on a C-4 cation and a radical in the 2-azetidinone systems is studied using NMR kinetics. While the beta-effect is virtually nonexistent in the case of a cation, ... Palladium-Catalyzed Aryl C-H Bonds Activation/Acetoxylation Utilizing a Bidentate System [作者：GOU FARONG; WANG XIANGCHUAN; HUO PENGFEI; BI HAIPENG; GUAN ZHENGHUI; LIANG YONGMIN,期刊：Organic Letters, 页码：5726-5729 , 文章类型： Article，,卷期：2009年11-24] A palladium-catalyzed aryl C-H bonds activation/acetoxylation reaction utilizing a bidentate system has been explored. This transformation has been applied to a wide array of pyridine and 8-aminoquinoline derivatives and... Synthesis of the Macrocyclic Core of Iriomoteolide 3a [作者：REDDY CHADA RAJI; DHARMAPURI GAJULA; RAO NAGAVARAM NARSIMHA,期刊：Organic Letters, 页码：5730-5733 , 文章类型： Article，,卷期：2009年11-24] The asymmetric synthesis of the fully functionalized macrocyclic core of iriomoteolide 3a, a cytotoxic 15-membered macrolide, Is disclosed. The key steps involve Sharpless asymmetric dihydroxylation, Sharpless asymmetric... Cooperativity of Regiochemistry Control Strategies in Reductive Couplings of Propargyl Alcohols and Aldehydes [作者：MALIK HASNAIN A; CHAULAGAIN MANI RAJ; MONTGOMERY JOHN,期刊：Organic Letters, 页码：5734-5737 , 文章类型： Article，,卷期：2009年11-24] The nickel-catalyzed reductive coupling of propargyl alcohols and alkynes proceeds with excellent regiochemical control with an underlying electronic preference that can be supplemented by ligand size effects. The produc...