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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96条记录   Efficient Synthesis of 1-Sulfonyl-1,2,3-triazoles [作者：RAUSHEL JESSICA; FOKIN VALERY V,期刊：Organic Letters, 页码：4952-4955 , 文章类型： Article，,卷期：2010年12-21] An efficient room-temperature method for the synthesis of 1-sulfonyl-1,2,3-triazoles from in situ generated copper(I) acetylides and sulfonyl azides is described. The copper(I) thiophene-2-carboxylate (CuTC) catalyst pro... Direct Functionalization of Indoles: Copper-Catalyzed Malonyl Carbenoid Insertions [作者：JOHANSEN MICHAEL B; KERR MICHAEL A,期刊：Organic Letters, 页码：4956-4959 , 文章类型： Article，,卷期：2010年12-21] Indoles, when treated with dimethyl diazomalonate under catalysis by Cu(acac)(2), undergo C-H insertion reactions regioselectively depending on the substitution pattern on the indole moiety. Indoles where the 3-position ... Highly Regioselective Ruthenium-Catalyzed Allylic Alkylations of Chelated Enolates [作者：BAYER ANTON; KAZMAIER ULI,期刊：Organic Letters, 页码：4960-4963 , 文章类型： Article，,卷期：2010年12-21] Ru-catalyzed allylic alkylations are a highly interesting alternative to Pd-catalyzed reactions. Ru complexes show a high tendency for regioretention, especially for branched and (Z)-configured substrates, and they do no... Asymmetric Synthesis of 3,4-Diaminocyclohexanol and endo-7-Azabicyclo[2.2.1]heptan-2-amine [作者：SAVOIA DIEGO; GRILLI STEFANO; GUALANDI ANDREA,期刊：Organic Letters, 页码：4964-4967 , 文章类型： Article，,卷期：2010年12-21] Hydroboration of (1R,2R)-bis[(S)-1-phenylethylamino]cyclohex-4-ene and its derivatives with several borane reagents gave diastereomeric mixtures of the 3,4-diaminocyclohexanol derivatives. Cyclization of the prevalent di... Synthesis of a Dimer of beta-(1,4)-L-Arabinosyl-(2S,4R)-4-hydroxyproline Inspired by Art v 1, the Major Allergen of Mugwort [作者：XIE NING; TAYLOR CAROL M,期刊：Organic Letters, 页码：4968-4971 , 文章类型： Article，,卷期：2010年12-21] N alpha-tert-Butoxycarbonyl-L-trans-4-hydroxyproline allyl ester (Boc-Hyp-OAII) was glycosylated with 2,3,5-tri-O-benzyl-L-arabinose p-cresylthioglycoside in 60% yield with 4:1 beta:alpha stereoselectivity. Deprotection ... Controlled Synthesis of 2-and 3-Substituted Benzo[b]furans [作者：PEI TAO; CHEN CHENGYI; DIMICHELE LISA; DAVIES IAN W,期刊：Organic Letters, 页码：4972-4975 , 文章类型： Article，,卷期：2010年12-21] A controlled regioselective synthesis of either C-2 or C-3 substituted benzo[b]furans from readily accessible 1-(2-hydroxyphenyl)-2-chloroethanones is described. Addition of a range of Grignard reagents to the alpha-chlo... Efficient Synthesis of the C(1)-C(9) Fragment of Amphidinolides C, C2, and F [作者：FERRIE LAURENT; FIGADERE BRUNO,期刊：Organic Letters, 页码：4976-4979 , 文章类型： Article，,卷期：2010年12-21] The synthesis of the C(1)-C(9) fragment of amphidinolides C, C2, and F was achieved by using a vinyloguous Mukaiyama aldol reaction on a chiral aldehyde with a silyloxyfuran and by using a C-glycosylation of a lactol der... Using the Rotaxane Mechanical Bond to Enhance Chemical Reactivity [作者：BAUMES JEFFREY M; MURGU IVAN; OLIVER ALLEN; SMITH BRADLEY D,期刊：Organic Letters, 页码：4980-4983 , 文章类型： Article，,卷期：2010年12-21] Rates of cycloreversion for squaraine rotaxane mono(endoperoxides) were enhanced by structural modifications that increased cross-component steric destabilization of the inward directed 9,10-anthracene endoperoxide group... Asymmetric Synthesis of 2,3-Dihydro-4-pyranones by Reaction of Chiral 3-Alkoxycyclobutanone and Aldehydes [作者：NEGISHI SHOKO; ISHIBASHI HIROYUKI; MATSUO JUNICHI,期刊：Organic Letters, 页码：4984-4987 , 文章类型： Article，,卷期：2010年12-21] Chiral cyclobutanone which had ethyl L-lactate as a chiral auxiliary at the 3-position reacted with aldehydes to give 2,3-dihydro-4-pyranones in up to 93% ee by combined use of titanium(IV) chloride and tin(II) chloride.... Effects of a Flexible Alkyl Chain on a Ligand for CuAAC Reaction [作者：ASANO KEISUKE; MATSUBARA SEIJIRO,期刊：Organic Letters, 页码：4988-4991 , 文章类型： Article，,卷期：2010年12-21] Imidazole derivatives substituted by a normal alkyl group are shown to be efficient as a ligand for the copper(I)-catalyzed azide-alkyne cycloaddition (CuAAC) reaction. An alkyl chain on the imidazole ligands shows an ef... Pd-Catalyzed Dearboxylative Heck Coupling with Dioxygen as the Terminal Oxidant [作者：FU ZHENGJIANG; HUANG SHIJUN; SU WEIPING; HONG MAOCHUN,期刊：Organic Letters, 页码：4992-4995 , 文章类型： Article，,卷期：2010年12-21] Pd-catalyzed decarboxylative Heck coupling of aromatic carboxylic acids with various olefins is developed using O-2 as the terminal oxidant. Enhancement of O-2 pressure leads to improving reaction turnover in this transf... Chromatography-Free Wittig Reactions Using a Bifunctional Polymeric Reagent [作者：LEUNG PETER SHUWAI; TENG YAN; TOY PATRICK H,期刊：Organic Letters, 页码：4996-4999 , 文章类型： Article，,卷期：2010年12-21] The first example of a polystyrene bearing two distinct reagent groups has been prepared. This phosphine and amine functionalized material was used in one-pot Wittig reactions with an aldehyde and either an a-halo-ester,... Ambipolar Hexa-peri-hexabenzocoronene-Fullerene Hybrid Materials [作者：WONG WALLACE W H; VAK DOOJIN; SINGH TH BIRENDRA; REN SHIJIE; YAN CHAO; JONES DAVID J; LIAW IRVING I; LAMB ROBERT N; HOLMES ANDREW B,期刊：Organic Letters, 页码：5000-5003 , 文章类型： Article，,卷期：2010年12-21] A new class of self-assembling hexa-peri-hexbenzocoronene (HBC)-fullerene hybrid materials has been synthesized and characterized. Photoluminescence experiments indicate that energy transfer processes can be tuned in the... Synthesis of New Bridgehead Substituted Azabicyclo-[2.2.1]heptane and -[3.3.1]nonane Derivatives as Potent and Selective alpha 7 Nicotinic Ligands [作者：SLOWINSKI FRANCK; BEN AYAD OMAR; VACHE JULIEN; SAADY MOURAD; LECLERC ODILE; LOCHEAD ALISTAIR,期刊：Organic Letters, 页码：5004-5007 , 文章类型： Article，,卷期：2010年12-21] New azabicyclo[2.2.1]heptane and -[3.3.1]nonane derivatives containing a pyridinyl substituent at the bridgehead position have been synthesized via an efficient ten chemical steps pathway. Both chemical series were then ... A Chiral 6-Membered N-Heterocyclic Carbene Copper(I) Complex That Induces High Stereoselectivity [作者：PARK JIN KYOON; LACKEY HERSHEL H; REXFORD MATTHEW D; KOVNIR KIRILL; SHATRUK MICHAEL; MCQUADE D TYLER,期刊：Organic Letters, 页码：5008-5011 , 文章类型： Article，,卷期：2010年12-21] A chiral 6-membered annulated N-heterocyclic (6-NHC) copper complex that catalyzes beta-borylations with high yield and enantioselectivity was developed. The chiral 6-NHC copper complex is easy to prepare on the gram sca... Termitomycamides A to E, Fatty Acid Amides Isolated from the Mushroom Termitomyces titanicus, Suppress Endoplasmic Reticulum Stress [作者：CHOI JAEHOON; MAEDA KOHEI; NAGAI KAORU; HARADA ETSUKO; KAWADE MITSUO; HIRAI HIROFUMI; KAWAGISHI HIROKAZU,期刊：Organic Letters, 页码：5012-5015 , 文章类型： Article，,卷期：2010年12-21] Five fatty acid amides, termitomycamides A to E (1 to 5), were isolated from the giant edible mushroom Termitomyces titanicus. The structures of 1-5 were determined by the interpretation of spectral data and/or synthesis...