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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96条记录   Copper-Catalyzed Synthesis of 2, 4-Disubstituted Allenoates from alpha-Diazoesters [作者：HASSINK MATTHEW; LIU XIAOZHONG; FOX JOSEPH M,期刊：Organic Letters, 页码：2388-2391 , 文章类型： Article，,卷期：2011年13-9] A Cu-catalyzed method for coupling alpha-substituted-alpha-diazoesters with terminal alkynes to give substituted allenoates is described. Key to the development of a selective method was the recognition that an adventito... A Practical and Convenient Fluorination of 1,3-Dicarbonyl Compounds Using Aqueous HF in the Presence of Iodosylbenzene [作者：KITAMURA TSUGIO; KURIKI SATOSHI; MORSHED MOHAMMAD HASAN; HORI YUJI,期刊：Organic Letters, 页码：2392-2394 , 文章类型： Article，,卷期：2011年13-9] A simple, practical, and convenient fluorination of 1,3-dicarbonyl compounds was achieved by direct use of aqueous hydrofluoric acid and iodosylbenzene (PhIO). The reaction of ethyl benzoylacetate with the reagent system... Copper-Catalyzed Annulative Amination of ortho-Alkynylphenols with Hydroxylamines: Synthesis of 3-Aminobenzofurans by Umpolung Amination Strategy [作者：HIRANO KOJI; SATOH TETSUYA; MIURA MASAHIRO,期刊：Organic Letters, 页码：2395-2397 , 文章类型： Article，,卷期：2011年13-9] A room temperature copper-catalyzed annulative amination of ortho-alkynylphenols with electrophilic amination reagents, O-acylated hydroxylamines, proceeds efficiently to provide the corresponding 3-aminobenzofurans of b... Low Pressure Ethenolysis of Renewable Methyl Oleate in a Microchemical System [作者：PARK CHAN PIL; VAN WINGERDEN MATTHEW M; HAN SOYEOP; KIM DONGPYO; GRUBBS ROBERT H,期刊：Organic Letters, 页码：2398-2401 , 文章类型： Article，,卷期：2011年13-9] A microchemical system for ethenolysis of renewable methyl oleate was developed, in which the dual-phase, microfluidic design enabled efficient diffusion of ethylene gas into liquid methyl oleate through an increased con... Ligand-Free Ag(I)-Catalyzed Carboxylation of Terminal Alkynes with CO2 [作者：ZHANG XIAO; ZHANG WENZHEN; REN XIANG; ZHANG LINLIN; LU XIAOBING,期刊：Organic Letters, 页码：2402-2405 , 文章类型： Article，,卷期：2011年13-9] A convenient approach to selectively prepare a wide range of functionalized propiolic acids was developed by Agl-catalyzed carboxylation of terminal alkynes using carbon dioxide as carboxylative agent under ligand-free c... Investigating the Rate of Photoreductive Glucosyl Radical Generation [作者：ANDREWS R STEPHEN; BECKER JENNIFER J; GAGNE MICHEL R,期刊：Organic Letters, 页码：2406-2409 , 文章类型： Article，,卷期：2011年13-9] The photoreduction of glucosyl halides to generate glucosyl radicals has been investigated to probe the nature of the photoredox cycle. Amine (the reductant) and catalyst concentration affect the reaction rate at low con... Aggregates of Cucurbituril Complexes in the Gas Phase [作者：DA SILVA JOSE P; JAYARAJ NITHYANANDHAN; JOCKUSCH STEFFEN; TURRO NICHOLAS J; RAMAMURTHY V,期刊：Organic Letters, 页码：2410-2413 , 文章类型： Article，,卷期：2011年13-9] The self-organization of cucurbit[n]uril (n = 7 and 8, CBs) complexes was probed by electrospray mass spectrometry. The self-association of CB complexes is a general phenomenon but shows some dependence on the absence, p... Benzotrithiophene - A Planar, Electron-Rich Building Block for Organic Semiconductors [作者：NIELSEN CHRISTIAN B; FRASER JAMIE M; SCHROEDER BOB C; DU JUNPING; WHITE ANDREW J P; ZHANG WEIMIN; MCCULLOCH IAIN,期刊：Organic Letters, 页码：2414-2417 , 文章类型： Article，,卷期：2011年13-9] Several functionalized benzo[1,2-b:3,4-b':5,6-d']trithiophenes have been synthesized and characterized. The fully planar and highly electron-rich material shows great promise as the donor constituent in donor-acceptor ty... Asymmetic Organocatalytic 1,3-Dipolar Cycloaddition of Azomethine Ylide to Methyl 2-(2-Nitrophenyl)acrylate for the Synthesis of Diastereoisomers of Spirotryprostatin A [作者：CHANG MOUNUO; WANG HAO; GONG LIUZHU,期刊：Organic Letters, 页码：2418-2421 , 文章类型： Article，,卷期：2011年13-9] The total synthesis of two diastereomers of spirotryprostatin A has been established starting with an asymmetric 1,3-dipolar cycloaddition of methyl 2-(2-nitrophenyl)acrylate with azomethine ylides catalyzed by a Bronste... On the Role of CO2 in NHC-Catalyzed Oxidation of Aldehydes [作者：CHIANG PEICHEN; BODE JEFFREY W,期刊：Organic Letters, 页码：2422-2425 , 文章类型： Article，,卷期：2011年13-9] NHC-catalyzed oxidations using carbon dioxide as the stoichiometric oxidant have been carefully investigated. These studies support a secondary role of CO2 in suppressing side reactions and exogenous oxygen as the actual... Asymmetric Synthesis of alpha-Keto Esters via Cu(II)-Catalyzed Aerobic Deacylation of Acetoacetate Alkylation Products: An Unusually Simple Synthetic Equivalent to the Glyoxylate Anion Synthon [作者：STEWARD KIMBERLY M; JOHNSON JEFFREY S,期刊：Organic Letters, 页码：2426-2429 , 文章类型： Article，,卷期：2011年13-9] A simple and efficient method for the preparation of beta-stereogenic alpha-keto esters is described using a copper(II)-catalyzed aerobic deacylation of substituted acetoacetate esters. The substrates for the title proce... Asymmetric Vinylogous Mukaiyama Aldol Reaction of Aldehyde-Derived Dienolates [作者：GIESELER MARC T; KALESSE MARKUS,期刊：Organic Letters, 页码：2430-2432 , 文章类型： Article，,卷期：2011年13-9] Unsaturated aldehydes are exquisite building blocks for further transformations in polyketide synthesis. Besides standard transformations that take advantage of the aldehyde functionality, the conjugate addition of hydri... Tandem Metathesis Reactions of Oxabicyclo[2.2.1]heptenes: Studies on the Spirocyclic Core of Cyclopamine [作者：OBLAK E ZACHARY; GDAYANANDAN NARENDRAN; WRIGHT DENNIS L,期刊：Organic Letters, 页码：2433-2435 , 文章类型： Article，,卷期：2011年13-9] A rapid approach to the spirocyclic core of cyclopamine was achieved in four steps from 2-pentenyl-furan. A furan Diels-Alder reaction followed by a one-pot dehalogenation/amination sequence provides the oxabicyclic trie... A Repetitive One-Step Method for Oligoarene Synthesis Using Catalyst-Controlled Chemoselective Cross-Coupling [作者：MANABE KEI; OHBA MAI; MATSUSHIMA YUJI,期刊：Organic Letters, 页码：2436-2439 , 文章类型： Article，,卷期：2011年13-9] A method far oligoarene synthesis involving chemoselective cross-coupling as the key reaction was developed. Boronic acids with a chloro or trifluoromethanesulfonyloxy group were used as the monomer precursors with eithe... Angustimine and Angustifolimine: Two New Alkaloids from Daphniphyllum angustifolium [作者：ZHANG CHUANRUI; FAN CHENGQI; DONG SHIHUI; LIU HONGBING; ZHOU WENBIN; WU YAN; YUE JIANMIN,期刊：Organic Letters, 页码：2440-2443 , 文章类型： Article，,卷期：2011年13-9] Two new alkaloids, angustimine (1) featuring an unprecedented skeleton, and angustifolimine (2) being a rare diamino Daphniphyllum alkaloid, were isolated from Daphniphyllum angustifolium. Their structures were elucidate... Carbonylative Heck Reactions Using CO Generated ex Situ in a Two-Chamber System [作者：HERMANGE PHILIPPE; GOGSIG THOMAS M; LINDHARDT ANDERS T; TAANING ROLF H; SKRYDSTRUP TROELS,期刊：Organic Letters, 页码：2444-2447 , 文章类型： Article，,卷期：2011年13-9] A carbonylative Heck reaction of aryl iodides and styrene derivatives employing a two-chamber system using a stable, crystalline, and nontransition metal based carbon monoxide source is reported. By applying near-stoichi...