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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83条记录   Iron-Catalyzed Aminolysis of beta-Carbonyl 1,3-Dithianes: Synthesis of Stereodefined beta-Enaminones and 3,4-Disubstituted Pyrazoles [作者：WANG YEMING; BI XIHE; LI WEIQI; LI DEHUA; ZHANG QIAN; LIU QUN; ONDON BRIM STEVY,期刊：Organic Letters, 页码：1722-1725 , 文章类型： Article，,卷期：2011年13-7] A novel iron-catalyzed aminolysis of beta-carbonyl 1,3-dithianes with various amines including ammonia, primary and secondary amines, as well as hydrazine hydrate has been developed, leading to the synthesis of steleodef... The Coupling of Arylboronic Acids with Nitroarenes Catalyzed by Rhodium [作者：ZHENG XINGWANG; DING JINCHANG; CHEN JIUXI; GAO WENXIAO; LIU MIAOCHANG; WU HUAYUE,期刊：Organic Letters, 页码：1726-1729 , 文章类型： Article，,卷期：2011年13-7] The coupling of arylboronic acids with electron-deficient nitroarenes was realized for the first time by using a rhodium(I) catalyst under an air atmosphere, achieving unsymmetrical diaryl ethers with yields ranging from... A Domino Process for Benzyne Preparation: Dual Activation of o-(Trimethylsilyl)phenols by Nonafluorobutanesulfonyl Fluoride [作者：IKAWA TAKASHI; NISHIYAMA TSUYOSHI; NOSAKI TOSHIFUMI; TAKAGI AKIRA; AKAI SHUJI,期刊：Organic Letters, 页码：1730-1733 , 文章类型： Article，,卷期：2011年13-7] Benzynes were generated from o-(trimethylsilyl)phenols using nonafluorobutanesulfonyl fluoride (NfF) by a domino process, i.e., the nonaflation of the phenolic hydroxyl group of o-(trimethylsilyl)phenols by NfF followed ... [[(tert-Butyl)dimethylsilyl]oxy]-methyl Group for Sulfur Protection [作者：WANG LIHONG; CLIVE DERRICK L J,期刊：Organic Letters, 页码：1734-1737 , 文章类型： Article，,卷期：2011年13-7] Aromatic and aliphatic thiols can be protected by reaction with t-BuMe2SiOCH2Cl in DMF in the presence of a base (2,6-lutidine or proton sponge); the resulting t-BuMe2SiOCH2SR or t-BuMe2SiOCH2SAr are deprotected by seque... Gold-Catalyzed Nitrene Transfer to Activated Alkynes: Formation of alpha,beta-Unsaturated Amidines [作者：LI CHAOQUN; ZHANG LIMING,期刊：Organic Letters, 页码：1738-1741 , 文章类型： Article，,卷期：2011年13-7] A gold-catalyzed intermolecular nitrene transfer to alkynes was developed for the first time, revealing a new mode of nitrene transfer and providing a novel access to versatile alpha-imino metal carbenes. Various mild ni... Mechanistic Investigation of the Enantioselective Intramolecular Stetter Reaction: Proton Transfer Is the First Irreversible Step [作者：MOORE JENNIFER L; SILVESTRI ANTHONY P; DE ALANIZ JAVIER READ; DIROCCO DANIEL A; ROVIS TOMISLAV,期刊：Organic Letters, 页码：1742-1745 , 文章类型： Article，,卷期：2011年13-7] A study on the mechanism of the asymmetric intramolecular Stetter reaction is reported. This investigation includes the determination of the rate law, kinetic isotope effects, and competition experiments. The reaction wa... A New Synthesis of Pyrazoles through a Lewis Acid Catalyzed Union of 3-Ethoxycyclobutanones with Monosubstituted Hydrazines [作者：SHAN GANG; LIU PENGFEI; RAO YU,期刊：Organic Letters, 页码：1746-1749 , 文章类型： Article，,卷期：2011年13-7] A new efficient and convenient approach toward the synthesis of pyrazoles is described. Through a Lewis acid catalyzed union of 3-ethoxycyclobutanones with monosubstituted hydrazines, a variety of pyrazole derivatives we... Metal-Free Halonium Mediated Acetate Shifts of Ynamides To Access alpha-Halo Acrylamides/Acrylimides [作者：KRAMER SOREN; FRIIS STIG D; XIN ZHUO; ODABACHIAN YANN; SKRYDSTRUP TROELS,期刊：Organic Letters, 页码：1750-1753 , 文章类型： Article，,卷期：2011年13-7] A metal-free acetate shift of 3-acetoxy ynamides to access alpha-iodo, bromo, and chloro acrylamides/acrylimides under very mild conditions is demonstrated. The Inherent alkyne activation of ynamides is sufficient to ens... Synthesis of beta-Amino Acid Derivatives via Copper-Catalyzed Asymmetric 1,4-Reduction of beta-(Acylamino)acrylates [作者：WU YAN; QI SHANBIN; WU FEIFEI; ZHANG XICHANG; LI MIN; WU JING; CHAN ALBERT S C,期刊：Organic Letters, 页码：1754-1757 , 文章类型： Article，,卷期：2011年13-7] A new set of reaction conditions has been established to facilitate the copper-catalyzed enantioselective 1,4-reduction of) beta-(acylamino)acrylates toward a selection of beta-alkyl-beta-amino acid derivatives in high y... A Fungal Nonribosomal Peptide Synthetase Module that can Synthesize Thiopyrazines [作者：QIAO KANGJIAN; ZHOU HUI; XU WEI; ZHANG WENJUN; GARG NEIL; TANG YI,期刊：Organic Letters, 页码：1758-1761 , 文章类型： Article，,卷期：2011年13-7] A nonribosomal peptide synthetase-like enzyme (NRPS325) from Aspergillus terreus was reconstituted in vitro and was shown to synthesize thiopyrazines using an unprecedented mechanism. Substrate promiscuity of NRPS325 tow... Facile Synthesis of 3-Alkoxy-4-cyanothiophenes As New Building Blocks for Donor-Acceptor Conjugated Systems [作者：HERGUE NOEMIE; MALLET CHARLOTTE; SAVITHA GURUNATHAN; ALLAIN MAGALI; FRERE PIERRE; RONCALI JEAN,期刊：Organic Letters, 页码：1762-1765 , 文章类型： Article，,卷期：2011年13-7] 3-Alkoxy-4-cyanothiophenes are efficiently synthesized in two steps from the readily available 4-cyano-3-oxotetrahydrothiophene. Regioisomers of bithiophene derivatives are easily synthesized by playing on the strong ele... Palladium-Catalyzed Oxidative Cross-Coupling between Pyridine N-Oxides and Indoles [作者：GONG XUE; SONG GUOYONG; ZHANG HONG; LI XINGWEI,期刊：Organic Letters, 页码：1766-1769 , 文章类型： Article，,卷期：2011年13-7] A Pd(II)-catalyzed oxidative coupling between pyridine N-oxides and N-substituted indoles via 2-fold C-H bond activation was achieved with high selectivity using Ag2CO3 as an oxidant. Encapsulation of Tetrathiafulvalene Inside a Dimeric Molecular Capsule [作者：QIU YANHUA; YI SONG; KEIFER ANGEL E,期刊：Organic Letters, 页码：1770-1773 , 文章类型： Article，,卷期：2011年13-7] Tetrathiafulvalene (TTF) is trapped inside a dimeric capsule formed by two octaacid, deep-cavity cavitands in aqueous solution. While the first one-electron oxidation of TTF is strongly hindered by encapsulation, the cap... Anthracene Capped Isobenzofuran: A Synthon for the Preparations of Iptycenes and Iptycene Quinones [作者：PEI BAOJIAN; CHAN WINGHONG; LEE ALBERT W M,期刊：Organic Letters, 页码：1774-1777 , 文章类型： Article，,卷期：2011年13-7] Anthracene capped isobenzofuran 5 (5,6-(9,10-dihydroanthracen-9,10-yl)isobenzofuran) was synthesized for the first time. It is a highly reactive and versatile synthon for the synthesis of iptycene derivatives via Diels-A... Total Synthesis of (+/-)-Meloscine [作者：HAYASHI YUJIRO; INAGAKI FUYUHIKO; MUKAI CHISATO,期刊：Organic Letters, 页码：1778-1780 , 文章类型： Article，,卷期：2011年13-7] The total synthesis of (+/-)-meloscine was completed in a highly stereoselective manner starting from the known 4-(2-aminophenyl)-2,3-dihydro-N-methoxycarbonylpyrrole. The crucial step in this total synthesis involves th... Microwave Assisted Synthesis of Bridgehead Alkenes [作者：CLEARY LEAH; YOO HOSEONG; SHEA KENNETH J,期刊：Organic Letters, 页码：1781-1783 , 文章类型： Article，,卷期：2011年13-7] A new, concise method to synthesize triene precursors for the type 2 intramolecular Diels-Alder reaction has been developed. Microwave irradiation of the trienes provides a convenient method for the synthesis of bridgehe...