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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45条记录   Micellar Catalysis of Suzuki-Miyaura Cross-Couplings with Heteroaromatics in Water. [作者：Lipshutz, Bruce H.;Abela, Alexander R.;,期刊：Organic Letters, 页码：5329-5332 , 文章类型： 研究论文，,卷期：2008年10-23] Pd-catalyzed couplings involving several heteroarom. halides (bromides and chlorides) as well as boronic acids can be done under exceedingly mild conditions (between rt and 40 癈) in pure water using com. available Pd cat... Silver Ion-Induced Grob Fragmentation of g-Amino Iodides: Highly Stereoselective Synthesis of Polysubstituted Piperidines. [作者：Barbe, Guillaume;St-Onge, Miguel;Charette, Andre B.;,期刊：Organic Letters, 页码：5497-5499 , 文章类型： 研究论文，,卷期：2008年10-23] A new concerted silver ion-mediated Grob fragmentation process is described in which a 1,2-dihydropyridinium ion is formed and trapped in situ with Grignard reagents in a highly regio- and diastereoselective fashion. Us... The Brosimum Allene: A Structural Revision. [作者：Hu, Gaojie;Liu, Kai;Williams, Lawrence J.;,期刊：Organic Letters, 页码：5493-5496 , 文章类型： 研究论文，,卷期：2008年10-23] Insight derived from a synthetic model, calcd., 13C NMR data, and comparison to exptl. data indicates that the proposed allenic structure I, originally assigned to an isolate from Brosimum acutifolium Huber, should be re... SmI2-Promoted Reformatsky-Type Reaction and Acylation of Alkyl 1-Chlorocyclopropanecarboxylates. [作者：Nagano, Takao;Motoyoshiya, Jiro;Kakehi, Akikazu;Nishii, Yoshinori;,期刊：Organic Letters, 页码：5453-5456 , 文章类型： 研究论文，,卷期：2008年10-23] In the presence of HMPA in THF, highly stereoselective SmI2-promoted substitutions of alkyl 1-chlorocyclopropanecarboxylates using various ketones, aldehydes (Reformatsky-type reaction), and acyl chlorides (acylation) pr... Rhodium-Complex-Catalyzed Addition Reactions of Chloroacetyl Chlorides to Alkynes. [作者：Kashiwabara, Taigo;Fuse, Kouichiro;Hua, Ruimao;Tanaka, Masato;,期刊：Organic Letters, 页码：5469-5472 , 文章类型： 研究论文，,卷期：2008年10-23] The addn. reaction of chloroacetyl chloride derivs. with terminal alkynes was catalyzed by Rh(acac)(CO)(AsPh3) to afford (Z)-1,4-dichloro-3-buten-2-one derivs., which displayed diverse reactivities in synthetic elaborati... Stereoselective Monofluoromethylation of N-tert-Butylsulfinyl Ketimines Using Pregenerated Fluoro(phenylsulfonyl)methyl Anion. [作者：Liu, Jun;Zhang, Laijun;Hu, Jinbo;,期刊：Organic Letters, 页码：5377-5380 , 文章类型： 研究论文，,卷期：2008年10-23] Pregeneration of fluoro(phenylsulfonyl)methyl anion (PhSO2CHF-) paves the way for the efficient and highly stereoselective monofluoromethylation of (R)-N-tert-butylsulfinyl ketimines. The stereocontrol mode of the prese... Stereoselective Rhodium-Catalyzed Imination of Sulfides. [作者：Collet, Florence;Dodd, Robert H.;Dauban, Philippe;,期刊：Organic Letters, 页码：5473-5476 , 文章类型： 研究论文，,卷期：2008年10-23] The prepn. of optically active sulfilimines via the catalytic diastereoselective imination of sulfides using a chiral nitrene is described. Excellent yields up to 97% and good diastereoselectivities up to 96% have been ... Conjugated Polymers from Naphthalene Bisimide. [作者：Guo, Xugang;Watson, Mark D.;,期刊：Organic Letters, 页码：5333-5336 , 文章类型： 研究论文，,卷期：2008年10-23] bis-imides (NBI) with various stannylated thiophene-based monomers yields high mol. wt. donor-acceptor conjugated polymers. Electrochem. and optical absorption measurements reveal that LUMO energy is essentially invaria... One-Pot Desymmetrizing Hydroformylation/Carbonyl Ene Cyclization Process: Straightforward Access to Highly Functionalized Cyclohexanols. [作者：Bigot, Aurelien;Breuninger, Daniel;Breit, Bernhard;,期刊：Organic Letters, 页码：5321-5324 , 文章类型： 研究论文，,卷期：2008年10-23] Rapid access to highly functionalized alkylidene cyclohexanols through a one-pot desymmetrizing hydroformylation/carbonyl ene cyclization starting from simple bisalkenylcarbinols is reported. Mechanistic insight into th... Arylene Imine Macrocycles of C3h and C3 Symmetry from Reductive Imination of Nitroformylarenes. [作者：Korich, Andrew L.;Hughes, Thomas S.;,期刊：Organic Letters, 页码：5405-5408 , 文章类型： 研究论文，,卷期：2008年10-23] Novel C3-sym. phenylene imine macrocycles, e.g. I, have been synthesized by reductive imination of single nitroformylarenes. Pore size and geometric shape are dictated by the distance between and orientation of the nitr... Direct assembly of aldehydes, amino esters, and anilines into chiral imidazolidines via Bronsted acid catalyzed asymmetric 1,3-dipolar cycloadditions. [作者：Liu, Wei-Jun;Chen, Xiao-Hua;Gong, Liu-Zhu;,期刊：Organic Letters, 页码：5357-5360 , 文章类型： 研究论文，,卷期：2008年10-23] A chiral Bronsted acid catalyzed 1,3-dipolar cycloaddn. reaction of aldehydes, amino esters, and anilines is described. A series of chiral imidazolidines was obtained using this method with high levels of stereoselectiv... An Organocatalytic Approach to the Construction of Chiral Oxazolidinone Rings and Application in the Synthesis of Antibiotic Linezolid and Its Analogues. [作者：Song, Lirong;Chen, Xiaobei;Zhang, Shilei;Zhang, Haoyi;Li, Ping;Luo, Guangshun;Liu, Wenjing;Duan, Wenhu;Wang, Wei;,期刊：Organic Letters, 页码：5489-5492 , 文章类型： 研究论文，,卷期：2008年10-23] An efficient, catalytic asym. approach to antibacterial agent linezolid (I) was developed. The route features organocatalytic, highly enantioselective aldol and Beckman rearrangement reactions. The strategy was also su... A Relay Ring-Closing Metathesis Synthesis of Dihydrooxasilines, Precursors of (Z)-Iodo Olefins. [作者：Xie, Qiuzhe;Denton, Richard W.;Parker, Kathlyn A.;,期刊：Organic Letters, 页码：5345-5348 , 文章类型： 研究论文，,卷期：2008年10-23] A convenient Grubbs II metathesis provides dihydrooxasilines by Relay RCM (RRCM). Dihydrooxasilines undergo ring opening to give Z-vinyl silanes. These can then be converted to Z-vinyl iodides. This sequence provides ... Synthesis of Spiroacetal Enol Ethers by Oxidative Activation of Furan Derivatives. [作者：Robertson, Jeremy;Naud, Sebastien;,期刊：Organic Letters, 页码：5445-5448 , 文章类型： 研究论文，,卷期：2008年10-23] Activation of furan by electron transfer combines with the radical stabilizing effect of the alkynyl substituent (R = Ph, MeCYC) to achieve site-selective cation formation. A tethered hydroxy group acts as a probe of th... Lewis Acid Catalyzed Ring-Opening Intramolecular Friedel-Crafts Alkylation of Methylenecyclopropane 1,1-Diesters. [作者：Hu, Bao;Xing, Siyang;Wang, Zhongwen;,期刊：Organic Letters, 页码：5481-5484 , 文章类型： 研究论文，,卷期：2008年10-23] The first Friedel-Crafts reaction initiated by the direct generation of a carbocation at the C3 position of MCP 1,1-diesters through distal-bond cleavage was presented. The described method provides a new synthetic stra... Palladacycle-Catalyzed Highly Efficient Kinetic Resolution of 1-Hydroxy-2-aryl-1,2-dihydronaphthalenes via Dehydration Reaction. [作者：Zhang, Ting-Ke;Mo, Dong-Liang;Dai, Li-Xin;Hou, Xue-Long;,期刊：Organic Letters, 页码：5337-5340 , 文章类型： 研究论文，,卷期：2008年10-23] Palladacycles showed their high efficiency in the kinetic resoln. cis-rac-1-hydroxy-2-aryl-1,2-dihydronaphthalenes, e.g., I, via dehydration, providing optically active products in high yields and high ee with an S facto...