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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113条记录   Silanediols: A New Class of Hydrogen Bond Donor Catalysts [作者：SCHAFER ANDREW G; WIETING JOSHUA M; MATTSON ANITA E,期刊：Organic Letters, 页码：5228-5231 , 文章类型： Article，,卷期：2011年13-19] Silanediols are introduced as a new class of hydrogen bond donor catalysts for the activation of nitroalkenes toward nucleophilic attack. Excellent yields of product are obtained for the conjugate addition of indole to b... A Deep Cavitand with a Fluorescent Wall Functions as an Ion Sensor [作者：BERRYMAN ORION B; SATHER AARON C; REBEK JULIUS JR,期刊：Organic Letters, 页码：5232-5235 , 文章类型： Article，,卷期：2011年13-19] The synthesis and characterization of a deep cavitand bearing a fluorescent benzoquinoxaline wall is reported. Noncovalent host-guest recognition events are exploited to sense small charged molecules including acetylchol... Rhodium-Catalyzed, Efficient Deutero- and Tritiosilylation of Carbonyl Compounds from Hydrosilanes and Deuterium or Tritium [作者：RUBIO MIGUEL; CAMPOS JESUS; CARMONA ERNESTO,期刊：Organic Letters, 页码：5236-5239 , 文章类型： Article，,卷期：2011年13-19] A cationic rhodium compound which is an active catalyst for both the hydrogen isotope exchange in hydrosilanes and the hydrosilylation of carbonyl compounds permits, in a one-flask, two-step procedure, efficient deutero-... Total Synthesis of Pacidamycin D by Cu(I)-Catalyzed Oxy Enamide Formation [作者：OKAMOTO KAZUYA; SAKAGAMI MASAHIRO; FENG FEI; TOGAME HIROKO; TAKEMOTO HIROSHI; ICHIKAWA SATOSHI; MATSUDA AKIRA,期刊：Organic Letters, 页码：5240-5243 , 文章类型： Article，,卷期：2011年13-19] The first total synthesis of pacidamycin D, which is expected to be a good candidate as an antibacterial agent against P. aeruginosa, is described. The key elements of our approach feature an efficient and stereocontroll... New Reactivity of Oxaziridine: Pd(II)-Catalyzed Aromatic C-H Ethoxycarbonylation via C-C Bond Cleavage [作者：PENG XINGAO; ZHU YINGGUANG; RAMIREZ THOMAS A; ZHAO BAOGUO; SHI YIAN,期刊：Organic Letters, 页码：5244-5247 , 文章类型： Article，,卷期：2011年13-19] A novel Pd(II)-catalyzed aromatic C-H ethoxycarbonylation with oxaziridine involving C-C bond cleavage is described. Various aromatic 2-phenylpyridines and related compounds as well as aryl ureas can be effectively ethox... Organocatalytic Asymmetric Aldol Reaction of Hydroxyacetone with beta,gamma-Unsaturated alpha-Keto Esters: Facile Access to Chiral Tertiary Alcohols [作者：LIU CHEN; DOU XIAOWEI; LU YIXIN,期刊：Organic Letters, 页码：5248-5251 , 文章类型： Article，,卷期：2011年13-19] An efficient direct asymmetric aldol reaction between hydroxyacetone and beta,gamma-unsaturated alpha-keto esters has been successfully developed. In the presence of 9-amino-9-deoxy-epi-cinchonine and trifluoroacetic aci... Palladium-Catalyzed Regioselective C-S Bond Cleavage of Thiophenes [作者：HUANG HUANAN; LI JING; LESCOP CHRISTOPHE; DUAN ZHENG,期刊：Organic Letters, 页码：5252-5255 , 文章类型： Article，,卷期：2011年13-19] Herein, a Pd-catalyzed reaction of simple and diverse bromothiophenes with alkynes via regioselective C-S bond activation is reported. This provides a new approach to prepare sulfur-based heterocycles and fulvenes. Efficient, Single-Step Access to Imidazo[1,5-a]pyridine N-Heterocyclic Carbene Precursors [作者：HUTT JOHNATHON T; ARON ZACHARY D,期刊：Organic Letters, 页码：5256-5259 , 文章类型： Article，,卷期：2011年13-19] The three-component coupling reaction of substituted picolinaldehydes, amines, and formaldehyde to produce imidazo[1,5-a]pyridinium ions is reported, providing an efficient method for the preparation of N-heterocyclic ca... Hydrazine-Selective Chromogenic and Fluorogenic Probe Based on Levulinated Coumarin [作者：CHOI MYUNG GIL; HWANG JIYOUNG; MOON JUNG OK; SUNG JAEYOUNG; CHANG SUKKYU,期刊：Organic Letters, 页码：5260-5263 , 文章类型： Article，,卷期：2011年13-19] Chemosignaling of hydrazine by selective deprotection of levulinated coumarin was investigated. In the presence of hydrazine, levulinated coumarin was selectively deprotected, resulting in chromogenic and fluorescent tur... Enantioselective Total Synthesis of the Potent Anti-HIV Nucleoside EFdA [作者：KAGEYAMA MASAYUKI; NAGASAWA TOMOHIRO; YOSHIDA MAYUMI; OHRUI HIROSHI; KUWAHARA SHIGEFUMI,期刊：Organic Letters, 页码：5264-5266 , 文章类型： Article，,卷期：2011年13-19] A concise enantioselective total synthesis of 4'-ethynyl-2-fluoro-2'-deoxyadenosine (EFdA), an extremely potent anti-HIV agent, has been accomplished from (R)-glyceraldehyde acetonide in 18% overall yield by a 12-step se... Stereoselective Borylative Ketone-Diene Coupling [作者：CHO HEE YEON; YU ZHIYONG; MORKEN JAMES P,期刊：Organic Letters, 页码：5267-5269 , 文章类型： Article，,卷期：2011年13-19] In the presence of catalytic Ni(cod)(2) and P(f-Bu)(3), ketones, dienes, and B(2)(pin)(2) undergo a stereoselective multicomponent coupling reaction. Upon oxidation, the reaction furnishes 1,3-diols as the major reaction... Concise Asymmetric Total Synthesis of 9-epi-Sessilifoliamide J [作者：TUO SHICHUAN; YE JIANLIANG; WANG AIE; HUANG SUYU; HUANG PEIQIANG,期刊：Organic Letters, 页码：5270-5273 , 文章类型： Article，,卷期：2011年13-19] A 10-step asymmetric synthesis of 9-epi-sessilifoliamide J (20), together with sessilifoliamide J (6), has been accomplished from the key chiral building block 11 via a threo-selective vinylogous Mannich reaction and a L... Highly Selective and Sensitive Fluorescent Turn-on Chemosensor for Al(3+) Based on a Novel Photoinduced Electron Transfer Approach [作者：LU YAN; HUANG SHANSHAN; LIU YIYANG; HE SONG; ZHAO LIANCHENG; ZENG XIANSHUN,期刊：Organic Letters, 页码：5274-5277 , 文章类型： Article，,卷期：2011年13-19] A photoinduced electron transfer (PET)-based chemosensor possessing dual PET processes by simultaneously introducing both nitrogen and sulfur donors was achieved. The fluorescence signal of the free chemosensor is in a n... A Three-Component Reaction Forming Naphthyridones - Synthesis of Lophocladine Analogs [作者：SELLSTEDT MAGNUS; ALMQVIST FREDRIK,期刊：Organic Letters, 页码：5278-5281 , 文章类型： Article，,卷期：2011年13-19] A three-component reaction forming dihydro 2,7-naphthyridine-1-ones has been developed. These unstable dihydro intermediates can be either oxidized or reduced to form naphthyridones or tetrahydro naphthyridones, respecti... Switching the Reactivity of Dihydrothiopyran-4-one with Aldehydes by Aqueous Organocatalysis: Baylis-Hillman, Aldol, or Aldol Condensation Reactions [作者：ABAEE M SAEED; MOJTAHEDI MOHAMMAD M; PASHA GHASEM F; AKBARZADEH ELAHE; SHOCKRAVI ABBAS; MESBAH A WAHID; MASSA WERNER,期刊：Organic Letters, 页码：5282-5285 , 文章类型： Article，,卷期：2011年13-19] An aqueous medium containing catalytic amounts of a tertiary amine was employed to direct the chemoselectivity of the reaction of aldehydes with la. With DBU, 2 was formed at room temperature as a rare exemplary of Bayli... Determining a Synthetic Approach to Pierisformaside C [作者：CHOW SHARON; KRESS CHRISTOPH; ALBAEK NANNA; JESSEN CARSTEN; WILLIAMS CRAIG M,期刊：Organic Letters, 页码：5286-5289 , 文章类型： Article，,卷期：2011年13-19] An efficient route detailing the construction of the central core of pierisformaside C, the first grayanane-type diterpene to possess three central double bonds, is reported.