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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71条记录   One-Pot, Pd-Catalyzed Synthesis of trans-Dihydrobenzofurans from o-Aminophenols [作者：COY B ERICSSON D; JOVANOVIC LJUBISA; SEFKOW MICHAEL,期刊：Organic Letters, 页码：1976-1979 , 文章类型： Article，,卷期：2010年12-9] An efficient and facile synthesis of trans-dihydrobenzofurans has been accomplished from o-aminophenols and phenylpropenes via a novel (one-pot) diastereoselective Pd-catalyzed oxyarylation reaction. The development and ... Enantioselective Synthesis of Planar-Chiral 1,n-Dioxa[n]paracyclophanes via Catalytic Asymmetric ortho-Lithiation [作者：KANDA KAZUMASA; ENDO KOHEI; SHIBATA TAKANORI,期刊：Organic Letters, 页码：1980-1983 , 文章类型： Article，,卷期：2010年12-9] Highly enantioselective ortho-lithiation and dilithiation of 1,n-dioxa[n]paracyclophanes were realized with the use of see-butyllithium and a catalytic or stoichiometric amount of sparteine. Quenching with various electr... Phosphorodiamidate-Directed Metalation of N-Heterocycles using Mg- and Zn-TMP Bases [作者：ROHBOGNER CHRISTOPH J; WIRTH STEFAN; KNOCHEL PAUL,期刊：Organic Letters, 页码：1984-1987 , 文章类型： Article，,卷期：2010年12-9] The strong directing ability of the N,N,N',N'-tetramethyldiaminophosphorodiamidate group has been used to achieve selective metalations on various heterocycles such as pyridines, quinolines and quinoxalines with TMP-deri... Copper-Catalyzed Enantioselective 1,4-Addition to alpha,beta-Unsaturated Aldehydes [作者：PALAIS LAETITIA; BABEL LUCILLE; QUINTARD ADRIEN; BELOT SEBASTIEN; ALEXAKIS ALEXANDRE,期刊：Organic Letters, 页码：1988-1991 , 文章类型： Article，,卷期：2010年12-9] The first asymmetric Cu-catalyzed conjugate addition of dialkylzinc zinc reagents to a large scope of enals in presence of phosphoramidite, SimplePhos, or (R)-BINAP ligands with enantiomeric excesses up to 90% is reporte... Oxidative Amidation and Azidation of Aldehydes by NHC Catalysis [作者：DE SARKAR SUMAN; STUDER ARMIDO,期刊：Organic Letters, 页码：1992-1995 , 文章类型： Article，,卷期：2010年12-9] N-Heterocyclic carbene catalyzed oxidative amidations of various aldehydes to the corresponding hexafluoroisopropylesters by using the readily available organic oxidant A are described. The hexafluoroisopropylesters prep... Copper-Catalyzed Diboration of Ketones: Facile Synthesis of Tertiary alpha-Hydroxyboronate Esters [作者：MCINTOSH MELISSA L; MOORE CAMERON M; CLARK TIMOTHY B,期刊：Organic Letters, 页码：1996-1999 , 文章类型： Article，,卷期：2010年12-9] The diboration of ketones with the (ICy)CuOt-Bu catalyst was developed to provide access to tertiary alpha-hydroxyboronate esters. The (ICy)CuOt-Bu catalyst was generated in situ with (ICy)CuCI and NaOt-Bu to afford a mo... Cu-Catalyzed Oxidative Amidation of Propiolic Acids Under Air via Decarboxylative Coupling [作者：JIA WEI; JIAO NING,期刊：Organic Letters, 页码：2000-2003 , 文章类型： Article，,卷期：2010年12-9] A Cu-catalyzed aerobic oxidative amidation of propiolic acids via decarboxylation under air has been developed. Only carbon dioxide is produced as byproduct in this approach. The use of air as oxidant makes this method m... Total Synthesis of (-)-Aurantioclavine [作者：BRAK KATRIEN; ELLMAN JONATHAN A,期刊：Organic Letters, 页码：2004-2007 , 文章类型： Article，,卷期：2010年12-9] The concise total synthesis of (-)-aurantioclavine has been achieved by taking advantage of strategies for the asymmetric alkenylation of N-tert-butanesulfinyl imines. The enantiomerically pure natural product was prepar... Enantioselective Synthesis of beta-Trifluoromethyl alpha-Amino Acids [作者：BENHAIM CYRIL; BOUCHARD LUC; PELLETIER GUILLAUME; SELLSTEDT JOHN; KRISTOFOVA LIVIA; DAIGNEAULT SYLVAIN,期刊：Organic Letters, 页码：2008-2011 , 文章类型： Article，,卷期：2010年12-9] We report herein the three-step enantioselective synthesis of beta-trifluoromethyl alpha-amino acids including trifluorovaline (TFV) using stereoselective hydrogenation with [((R)-trichickenfootphos)Rh(cod)]BF4 catalyst ... Intramolecular Imino Diels-Alder Approach to the Synthesis of the Aspidosperma Alkaloid from 3,5-Dibromo-2-pyrone [作者：TAM NGUYEN THANH; JUNG EUNJU; CHO CHEONGYU,期刊：Organic Letters, 页码：2012-2014 , 文章类型： Article，,卷期：2010年12-9] A new synthetic route to the key framework of aspidosperma alkaloid was devised from the cycloadduct of 3-(2-nitrophenyl)-5-bromo-2-pyrone via intramolecular imino Diels-Alder reaction. Total Synthesis of (+/-)-Galanthamine via a C3-Selective Stille Coupling and IMDA Cycloaddition Cascade of 3,5-Dibromo-2-pyrone [作者：CHANG JAY HYOK; KANG HOUNG; JUNG INHAK; CHO CHEONGYU,期刊：Organic Letters, 页码：2016-2018 , 文章类型： Article，,卷期：2010年12-9] A new efficient synthetic route to (+/-)-galanthamine was devised by using a tandem C3-selective Stifle coupling-IMDA cascade of 3,5-dibromo-2-pyrone as a key strategy. Unprecedented 1,3-Dipolar Cycloaddition: From 1,4,5,8-Naphthalene Bisimides to a New Heterocyclic Skeleton [作者：GRYKO DANIEL T; ROGACKI MACIEJ K; KLAJN JAN; GALEZOWSKI MICHAL; STEPIEN DOROTA K; CYRANSKI MICHAL K,期刊：Organic Letters, 页码：2020-2023 , 文章类型： Article，,卷期：2010年12-9] 1,4,5,8-Naphthalene bisimides react as dipolarophiles with in situ formed azomethine ylides. Double 1,3-dipolar cycloaddition is followed by unique ring rearrangement and leads to the formation of two six-membered rings.... Synthesis of Tertiary Amides from Anionically Activated Aromatic Trifluoromethyl Groups [作者：OMAHONY GAVIN; PITTS ANDREW K,期刊：Organic Letters, 页码：2024-2027 , 文章类型： Article，,卷期：2010年12-9] In this paper, a novel synthesis of tertiary amides from anionically activated aromatic trifluoromethyl groups is presented. Anionically activated trifluoromethyl groups react with secondary amines under aqueous conditio... Enantioselective alpha-Amination of 1,3-Dicarbonyl Compounds Using Squaramide Derivatives as Hydrogen Bonding Catalysts [作者：KONISHI HIDEYUKI; LAM TIN YIU; MALERICH JEREMIAH P; RAWAL VIRESH H,期刊：Organic Letters, 页码：2028-2031 , 文章类型： Article，,卷期：2010年12-9] Catalytic enantioselective alpha-hydrazination of 1,3-dicarbonyl compounds with azodicarboxylates was investigated in the presence of our newly developed hydrogen bonding catalyst, squaramide 3j. High yields and high ena... Desymmetrizations Forming Tetrasubstituted Olefins Using Enantioselective Olefin Metathesis [作者：STENNE BRICE; TIMPERIO JUSTIN; SAVOIE JOLAINE; DUDDING TRAVIS; COLLINS SHAWN K,期刊：Organic Letters, 页码：2032-2035 , 文章类型： Article，,卷期：2010年12-9] Highly reactive chiral Ru-based catalysts possessing C-1-symmetric N-heterocyclic carbene ligands adorned with one N-alkyl group and one N-aryl group were evaluated in asymmetric desymmetrizations to form cyclic products... Synthesis of the C9-C23 (C9 '-C23 ') Fragment of the Dimeric Natural Product Rhizopodin [作者：CHEN ZHENG; SONG LIANKAI; XU ZHENGSHUANG; YE TAO,期刊：Organic Letters, 页码：2036-2039 , 文章类型： Article，,卷期：2010年12-9] A stereoselective assembly of the C9-C23 (C9'-C23') fragment of rhizopodin, a 38-membered bis-lactone natural product, has been developed. A highly efficient approach to this fragment assembles >50% of the carbon skeleto...