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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62条记录   Asymmetric Direct Alkynylation Catalyzed by Chiral Ru-Bis(oxazolinyl)phenyl Complexes [作者：ITO JUNICHI; ASAI RYOSUKE; NISHIYAMA HISAO,期刊：Organic Letters, 页码：3860-3862 , 文章类型： Article，,卷期：2010年12-17] Propargylic alcohols were obtained with excellent enantioselectivities in the asymmetric direct alkynylation of aldehydes using 5 mol % of chiral ruthenium complexes containing the chiral bis(oxazolinyl)phenyl ligand. Domino Approach for the Synthesis of Pyrrolo[1,2-a]pyrazine from Vinyl Azides [作者：CHEN WENTENG; HU MIAO; WU JIANWEI; ZOU HONGBIN; YU YONGPING,期刊：Organic Letters, 页码：3863-3865 , 文章类型： Article，,卷期：2010年12-17] A domino synthesis of pyrrolo[1,2-alpha]pyrazine from 1H-2-pyrrolecarbaldehyde and readily synthesized vinyl azides was developed. This reaction proceeded under relatively mild conditions in the presence of base. Additio... Supramolecular Assemblies in Ionic Liquid Catalysis for Aza-Michael Reaction [作者：ROY SUDIPTA RAHA; CHAKRABORTI ASIT K,期刊：Organic Letters, 页码：3866-3869 , 文章类型： Article，,卷期：2010年12-17] Supramolecular assemblies formed by a relay of cooperative hydrogen bonds and charge charge interactions have been identified/characterized by (+ve) ESI and MALDI-TOF-TOF MS and MS-MS studies during the aza-Michael react... Functionalization of Aromatic Amino Acids via Direct C-H Activation: Generation of Versatile Building Blocks for Accessing Novel Peptide Space [作者：MEYER FALCOMAGNUS; LIRAS SPIROS; GUZMANPEREZ ANGEL; PERREAULT CHRISTIAN; BIAN JIANWEI; JAMES KEITH,期刊：Organic Letters, 页码：3870-3873 , 文章类型： Article，,卷期：2010年12-17] Functionalized alpha-amino acid building blocks have been prepared in good yield with high regiocontrol and preservation of stereochemistry via iridium-catalyzed borylation of suitably protected aromatic a-amino acid der... C-9 Fluorenyl Substituted Anthracenes: A Promising New Family of Blue Luminescent Materials [作者：WANG JING; WAN WEN; JIANG HAIZHEN; GAO YAN; JIANG XUEYIN; LIN HUAPING; ZHAO WEIMING; HAO JIAN,期刊：Organic Letters, 页码：3874-3877 , 文章类型： Article，,卷期：2010年12-17] Syntheses, optical, and electrochemical properties of novel C-9 fluorenyl substituted anthracenes linked by a tetrahedral sp(3)-hybridized carbon atom are reported for blue light emitting materials. Remarkably, an unopti... Transition-Metal-Free Sonogashira-Type Coupling of ortho-Substituted Aryl and Alkynyl Grignard Reagents by Using 2,2,6,6-Tetramethylpiperidine-N-oxyl Radical as an Oxidant [作者：MAJI MODHU SUDAN; MURARKA SANDIP; STUDER ARMIDO,期刊：Organic Letters, 页码：3878-3881 , 文章类型： Article，,卷期：2010年12-17] Cross coupling of aryl, alkenyl, and alkynyl magnesium compounds by using 2,2,6,6-tetramethylpiperidine-N-oxyl radical (TEMPO) as an environmentally benign organic oxidant is described. This coupling reaction can be perf... Asymmetric Synthesis of gamma-Hydroxy alpha-Enones by 1,8-Diazabicyclo[5.4.0]undec-7-ene-Catalyzed Stereoselective Rearrangement of Chiral alpha-Sulfinyl Enones [作者：MIURA MOTOFUMI; TORIYAMA MASAHARU; KAWAKUBO TAKASHI; YASUKAWA KEN; TAKIDO TOSHIO; MOTOHASHI SHIGEYASU,期刊：Organic Letters, 页码：3882-3885 , 文章类型： Article，,卷期：2010年12-17] The asymmetric rearrangement of optically active a-sulfinyl enone 1 induced by catalytic DBU and triphenylphosphine gave optically active gamma-hydroxy alpha-enone derivatives (up to 99% ee) in good yield following treat... Enantioselective Modular Synthesis of Cyclohexenones: Total Syntheses of (+)-Crypto- and (+)-Infectocaryone [作者：FRANCK GERALDINE; BROEDNER KERSTIN; HELMCHEN GUENTER,期刊：Organic Letters, 页码：3886-3889 , 文章类型： Article，,卷期：2010年12-17] A modular synthesis of cyclohexenones is described and applied to the first enantioselective total syntheses of (+)-crypto- and (+)-infectocaryone. Key steps in the synthesis of cyclohexenones are an iridium-catalyzed al... Synthesis of the Bis-tetrahydropyran Core of Amphidinol 3 [作者：CRIMMINS MICHAEL T; MARTIN TIMOTHY J; MARTINOT THEODORE A,期刊：Organic Letters, 页码：3890-3893 , 文章类型： Article，,卷期：2010年12-17] A convergent synthesis of the C31-C52 bis-tetrahydropyran core of the natural product amphidinol 3 is reported. A common intermediate was synthesized from D-tartaric acid utilizing an asymmetric glycolate alkylation/ring... Concise Approach toward Tetrazolo[1,5-a][1,4]benzodiazepines via a Novel Multicomponent Isocyanide-Based Condensation [作者：BORISOV ROMAN S; POLYAKOV ANATOLIY I; MEDVEDEVA LIDIA A; KHRUSTALEV VICTOR N; GURANOVA NATALIA I; VOSKRESSENSKY LEONID G,期刊：Organic Letters, 页码：3894-3897 , 文章类型： Article，,卷期：2010年12-17] A novel and efficient method for the synthesis of heteroannulated [1,4]benzodiazepines via an isocyanide-based multicomponent reaction is reported. The tetrazolo[1,5-a][1,4]benzodiazepines were obtained by a facile azide... Free-Radical Addition to Ketimines Generated In Situ. New One-Pot Synthesis of Quaternary alpha-Aminoamides Promoted by a H2O2/TiCl4-Zn/HCONH2 System [作者：PASTORI NADIA; GRECO COSIMINA; CLERICI ANGELO; PUNTA CARLO; PORTA OMBRETTA,期刊：Organic Letters, 页码：3898-3901 , 文章类型： Article，,卷期：2010年12-17] A free radical multicomponent reaction mediated by an acidic TiCl4-Zn/H2O2 system allows the assembly of an amine, a ketone, and formamide in one pot, affording instant access to quaternary a-amino acid derivatives. Simple and Efficient Preparation of 2,5-Disubstituted Oxazoles via a Metal-Free-Catalyzed Cascade Cyclization [作者：WAN CHANGFENG; GAO LINFENG; WANG QIANG; ZHANG JINTANG; WANG ZHIYONG,期刊：Organic Letters, 页码：3902-3905 , 文章类型： Article，,卷期：2010年12-17] A practical and simple synthesis of 2,5-disubstituted oxazoles was developed via an iodine-catalyzed tandem oxidative cyclization. A wide range of common commercial aromatic aldehydes can be used as reaction substrates, ... Development of a 2-Aza-Cope-[3+2] Dipolar Cycloaddition Strategy for the Synthesis of Quaternary Proline Scaffolds [作者：MCCORMACK MICHAEL P; SHALUMOVA TAMILA; TANSKI JOSEPH M; WATERS STEPHEN P,期刊：Organic Letters, 页码：3906-3909 , 文章类型： Article，,卷期：2010年12-17] A one-pot multicomponent procedure for the synthesis of highly functionalized pyrrolidine rings through a domino 2-aza-Cope-[3 + 2] dipolar cycloaddition sequence has been demonstrated. This protocol was found to be both... Macrocyclic and Acyclic Molecules Synthesized from Dipyrrolylmethanes: Receptors for Anions [作者：MANI GANESAN; GUCHHAIT TAPAS; KUMAR RAJNISH; KUMAR SHANISH,期刊：Organic Letters, 页码：3910-3913 , 文章类型： Article，,卷期：2010年12-17] A new class of macrocyclic and acyclic molecules was synthesized by the Mannich reactions of dipyrrolylmethanes to investigate anion recognition. The X-ray structures of the macrocycle and sulfate complexes are reported.... Base-Accelerated Enantioselective Substitution of Morita-Baylis-Hillman Carbonates with Dialkyl Phosphine Oxides [作者：SUN WANGSHENG; HONG LIANG; LIU CHUNXIA; WANG RUI,期刊：Organic Letters, 页码：3914-3917 , 文章类型： Article，,卷期：2010年12-17] A base could accelerate the S(N)2' or S(N)2' S(N)2' reaction of Morita-Baylis-Hillman (MBH) carbonates with dialkyl phosphine oxides, but the judicial choice of an appropriate base would greatly depress this competitive ... Highly Efficient and Expedient Synthesis of 5-Hydroxy-1H-pyrrol-2-(5H)-ones from FeCl3-Catalyzed Tandem Intramolecular Enaminic Addition of Tertiary Enamides to Ketones and 1,3-Hydroxy Rearrangement [作者：YANG LUO; LEI CHUANHU; WANG DEXIAN; HUANG ZHITANG; WANG MEIXIANG,期刊：Organic Letters, 页码：3918-3921 , 文章类型： Article，,卷期：2010年12-17] Catalyzed by FeCl3 under very mild conditions, tertiary enamides underwent a highly efficient intramolecular enaminic addition reaction to the ketonic carbonyls followed by 1,3-hydroxy rearrangement to produce 5-hydroxy-...