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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77条记录   CuI/BF3 center dot Et2O Cocatalyzed Aerobic Dehydrogenative Reactions of Ketones with Benzylamines: Facile Synthesis of Substituted Imidazoles [作者：CAI ZHONGJIAN; WANG SHUNYI; JI SHUNJUN,期刊：Organic Letters, 页码：6068-6071 , 文章类型： Article，,卷期：2012年14-23] A novel CuI/BF3 center dot Et2O/O-2-mediated reaction utilizing ketones and benzylamines for the construction of substituted imidazoles in one step under mild conditions has been demonstrated. This protocol involved the ... Regioselective Formation of Tetrahydroselenophenes via 5-exo-dig-Cyclization of 1-Butylseleno-4-alkynes [作者：GAI RAFAELA M; SCHUMACHER RICARDO F; BACK DAVI F; ZENI GILSON,期刊：Organic Letters, 页码：6072-6075 , 文章类型： Article，,卷期：2012年14-23] Results on the synthesis of tetrahydroselenophene derivatives from 1-butylseleno-4-alkynes by electrophilic cyclization using iodine as the electrophilic source are presented. This methodology was carried out via a simpl... 1,2- and 1,4-Additions of 2-Alkynylcyclohexadienimines with Aromatic Amines To Access 4-Amino-N-arylindoles and -azepinoindoles [作者：ZHANG LI; LI ZHIMING; FAN RENHUA,期刊：Organic Letters, 页码：6076-6079 , 文章类型： Article，,卷期：2012年14-23] 2-Alkynylcyclohexadienimines, derived from the oxidation of 2-alkynylanilines, react with aromatic amines leading to N-arylindoles with a 4-amino substitution. The reaction was metal-controlled, and Bi(OTf)(3) proved to ... Copper-Mediated Fluoroalkylation of Aryl Iodides Enables Facile Access to Diverse Fluorinated Compounds: The Important Role of the (2-Pyridyl)sulfonyl Group [作者：ZHAO YANCHUAN; GAO BING; NI CHUANFA; HU JINBO,期刊：Organic Letters, 页码：6080-6083 , 文章类型： Article，,卷期：2012年14-23] The (2-pyridyl)sulfonyl group was found to be a multifunctional group in the preparation of structurally diverse fluorinated products. It not only facilitates the copper-mediated (or catalyzed) cross-coupling reaction be... A Charge Transfer Amplified Fluorescent Hg2+ Complex for Detection of Picric Acid and Construction of Logic Functions [作者：KUMAR MANOJ; REJA SHAHI IMAM; BHALLA VANDANA,期刊：Organic Letters, 页码：6084-6087 , 文章类型： Article，,卷期：2012年14-23] A chemosensor 3 based on the N,N-dimethylaminocinnamaldehyde has been synthesized which shows fluorescence turn-on response with Hg2+ ions, and the in situ prepared 3-Hg2+ complex has been used for detection of picric ac... Iodine-Mediated alpha-Acetoxylation of 2,3-Disubstituted Indoles [作者：ZAIMOKU HISAAKI; HATTA TAKASHI; TANIGUCHI TSUYOSHI; ISHIBASHI HIROYUKI,期刊：Organic Letters, 页码：6088-6091 , 文章类型： Article，,卷期：2012年14-23] A new method for direct alpha-functionalization of 2,3-disubstituted indoles has been developed. The present reaction provides alpha-acetoxy indole derivatives regioselectively under mild conditions using commercially av... Formation of Carbon-Carbon Bonds Using Aminal Radicals [作者：SCHIEDLER DAVID A; VELLUCCI JESSICA K; BEAUDRY CHRISTOPHER M,期刊：Organic Letters, 页码：6092-6095 , 文章类型： Article，,卷期：2012年14-23] Aminal radicals were generated by radical translocation processes. For the first time, it is shown that they participate in carbon-carbon bond forming reactions. Either stannane or silane hydrogen atom donors are suitabl... Enantioselective Intermolecular [2+2+2] Cycloadditions of Ene-Allenes with Allenoates [作者：BRUSOE ANDREW T; EDWANKAR RAHUL V; ALEXANIAN ERIK J,期刊：Organic Letters, 页码：6096-6099 , 文章类型： Article，,卷期：2012年14-23] An enantioselective [2 + 2 + 2] cycloaddition of ene-allenes with allenoates is described, which transforms simple pi-components into stereochemically complex carbocycles in a single step. The rhodium(I)-catalyzed cycloa... Lewis Acid Catalyzed Intramolecular Condensation of Ynol Ether-Acetals. Synthesis of Alkoxycycloalkene Carboxylates [作者：TRAN VINCENT; MINEHAN THOMAS G,期刊：Organic Letters, 页码：6100-6103 , 文章类型： Article，,卷期：2012年14-23] Treatment of ynol ether-tethered dialkyl acetals with catalytic quantities of scandium triflate in CH3CN gives rise to five-, six-, and seven-membered alkoxycycloalkene carboxylates in good to excellent yields. Tri- and ... A General Method for the Enantioselective Synthesis of alpha-Chiral Heterocycles [作者：LE PHONG Q; NGUYEN THIEN S; MAY JEREMY A,期刊：Organic Letters, 页码：6104-6107 , 文章类型： Article，,卷期：2012年14-23] The enantioselective formation of stereocenters proximal to unprotected heterocycles has been accomplished. Thus, vinyl boronic acids are added to heterocycle-appended enones via a modified-BINOL catalyst. Catalyst desig... Rhodium(III)-Catalyzed Direct Oxidative Cross Coupling at the C5 Position of Chromones with Alkenes [作者：SAMANTA RAJARSHI; NARAYAN RISHIKESH; ANTONCHICK ANDREY P,期刊：Organic Letters, 页码：6108-6111 , 文章类型： Article，,卷期：2012年14-23] An atom-economical, Rh(III)-catalyzed, direct oxidative cross-coupling at the C5 position of chromones and flavones with a broad range of alkenes was developed. The products were formed in a highly regioselective manner ... From Alcohols to Indoles: A Tandem Ru Catalyzed Hydrogen-Transfer Fischer Indole Synthesis [作者：PORCHEDDU ANDREA; MURA MANUEL G; DE LUCA LIDIA; PIZZETTI MARIANNA; TADDEI MAURIZIO,期刊：Organic Letters, 页码：6112-6115 , 文章类型： Article，,卷期：2012年14-23] In a new version of the Fischer indole synthesis, primary and secondary alcohols have been catalytically oxidized in the presence of phenylhydrazines and protic or Lewis acids to give the corresponding indoles. The overa... Rhenium-Catalyzed Regio- and Stereoselective Synthesis of gamma-Thio-alpha,beta-unsaturated Ketones via Insertion of Terminal Alkynes into the C-S Bond [作者：NISHI MITSUMI; KUNINOBU YOICHIRO; TAKAI KAZUHIKO,期刊：Organic Letters, 页码：6116-6118 , 文章类型： Article，,卷期：2012年14-23] The reaction of alpha-thioketones and alkynes in the presence of a rhenium catalyst, [HRe(CO)(4)](n), gave gamma-thio-alpha,beta-unsaturated ketones in excellent yields. The alkynes were inserted into the carbon-sulfur b...