个性化文献订阅>文章检索

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54条记录   Synthesis of Taurospongin A [作者：WU BOSHEN; MALLINGER AURELIE; ROBERTSON JEREMY,期刊：Organic Letters, 页码：2818-2821 , 文章类型： Article，,卷期：2010年12-12] Two new routes to the C(1-10) carboxylic acid core of taurospongin A are presented. In the first route, overall asymmetric hydration of a C(2) C(3) alkene is achieved by Sharp less AD and selective deoxygenation at C(2);... Stereochemical and Skeletal Diversity Arising from Amino Propargylic Alcohols [作者：PIZZIRANI DANIELA; KAYA TANER; CLEMONS PAUL A; SCHREIBER STUART L,期刊：Organic Letters, 页码：2822-2825 , 文章类型： Article，,卷期：2010年12-12] An efficient synthetic pathway to the possible stereoisomers of skeletally diverse heterocyclic small molecules is presented. The change in shape brought about by different intramolecular cyclizations of diastereoisomeri... Synthesis of (-)-Paroxetine via Enantioselective Phase-Transfer Catalytic Monoalkylation of Malonamide Ester [作者：KIM MIHYUN; PARK YOHAN; JEONG BYEONGSEON; PARK HYEUNGGEUN; JEW SANGSUP,期刊：Organic Letters, 页码：2826-2829 , 文章类型： Article，,卷期：2010年12-12] A new enantioselective synthetic method of (-)-paroxetine is reported. (-)-Paroxetine could be obtained in 15 steps (95% ee and 9.1% overall yield) from N,N-bis(p-methoxyphenyl)malonamide tert-butyl ester via the enantio... Catalytic Enantioselective Total Syntheses of Bakkenolides I, J, and S: Application of a Carbene-Catalyzed Desymmetrization [作者：PHILLIPS ERIC M; ROBERTS JOHN M; SCHEIDT KARL A,期刊：Organic Letters, 页码：2830-2833 , 文章类型： Article，,卷期：2010年12-12] A general strategy for the catalytic asymmetric syntheses of the bakkenolides is reported. The key bond-forming step Involves an N-heterocyclic carbene catalyzed desymmetrization of a 1,3-diketone to form three new bonds... Epoxide Opening-Induced Tandem 8-Azabicyclo[3.2.1]octane to 6-Azabicyclo[3.2.1]octane Rearrangement-Iminium Allylation: Synthesis of (+/-)-Peduncularine [作者：HODGSON DAVID M; SHELTON RUTH E; MOSS THOMAS A; DEKHANE MOULOUD,期刊：Organic Letters, 页码：2834-2837 , 文章类型： Article，,卷期：2010年12-12] An efficient Lewis acid induced nitrogen-driven rearrangement iminium-trapping cascade from an epoxytropinone 3 gives a 7-allylated 6-azabicyclo[3.2.1]octan-3-one 2, which is converted into the alkaloid (+/-)-pedunculari... Iron-Catalyzed, Directed Oxidative Arylation of Olefins with Organozinc and Grignard Reagents [作者：ILIES LAUREAN; OKABE JUN; YOSHIKAI NAOHIKO; NAKAMURA EIICHI,期刊：Organic Letters, 页码：2838-2840 , 文章类型： Article，,卷期：2010年12-12] Chelation-controlled arylation of olefins with organozinc or Grignard reagents proceeds in the presence of an iron catalyst, under mild conditions and typically without the need of external ligands, to afford substituted... A Simple and Efficient Approach to the Synthesis of 2-Phenylquinazolines via sp(3) C-H Functionalization [作者：ZHANG JINTANG; ZHU DAPENG; YU CHENMIN; WAN CHANGFENG; WANG ZHIYONG,期刊：Organic Letters, 页码：2841-2843 , 文章类型： Article，,卷期：2010年12-12] A facile and novel approach to the synthesis of 2-phenylquinazolines was developed via a tandem reaction following sp(3) C-H functionalization. Twenty-five examples of 2-phenylquinazolines were obtained from easily avail... Direct Ruthenium-Catalyzed C-C Coupling of Ethanol: Diene Hydro-hydroxyethylation To Form All-Carbon Quaternary Centers [作者：HAN HOON; KRISCHE MICHAEL J,期刊：Organic Letters, 页码：2844-2846 , 文章类型： Article，,卷期：2010年12-12] Under ruthenium-catalyzed transfer hydrogenation conditions, direct C C coupling of ethanol and 2-substituted dienes occurs to furnish products of hydro-hydroxyethylation: anti-configured neopentyl homoallylic alcohols. ... Pd-II-Catalyzed Oxidative 1,1-Diarylation of Terminal Olefins [作者：WERNER ERIK W; URKALAN KAVERI B; SIGMAN MATTHEW S,期刊：Organic Letters, 页码：2848-2851 , 文章类型： Article，,卷期：2010年12-12] Evaluation of the scope of a Pd-II-catalyzed oxidative 1,1-diarylation reaction of terminal olefins using aryl stannanes is reported. The reaction is shown to be tolerant of functionality commonly encountered in organic ... Novel One-Pot, Four-Component Condensation Reaction: An Efficient Approach for the Synthesis of 2,5-Disubstituted 1,3,4-Oxadiazole Derivatives by a Ugi-4CR/aza-Wittig Sequence [作者：RAMAZANI ALI; REZAEI ARAM,期刊：Organic Letters, 页码：2852-2855 , 文章类型： Article，,卷期：2010年12-12] A novel and efficient method has been developed for the synthesis of 2,5-disubstituted 1,3,4-oxadiazole derivatives using (N-isocyanimino)triphenylphosphorane, a secondary amine, a carboxylic acid, and an aromatic aldehy... NMR Determinations of the Absolute Configuration of alpha-Chiral Primary Amines [作者：FUKUI HIROKI; FUKUSHI YUKIHARU,期刊：Organic Letters, 页码：2856-2859 , 文章类型： Article，,卷期：2010年12-12] We have established a methodology to determine the absolute configuration of alpha-chiral primary amines by derivatization to the corresponding imines with each enantiomer of 2'-methoxy-1,1'-binaphthalene-8-carbaldehyde ... Ethynyldiisopropylsilyl: A New Allrynylsilane Protecting Group and "Click" Linker [作者：SHARMA PALLAVI; MOSES JOHN E,期刊：Organic Letters, 页码：2860-2863 , 文章类型： Article，,卷期：2010年12-12] A new silyl-based reagent has been developed for "catch and release" immobilization, combining click chemistry with silyl protection. The traditional "all carbon" attachment to solid supports In a silyl type linker was s... Catalytic Nucleophilic Glyoxylation of Aldehydes [作者：STEWARD KIMBERLY M; JOHNSON JEFFREY S,期刊：Organic Letters, 页码：2864-2867 , 文章类型： Article，,卷期：2010年12-12] beta-Silyloxy-alpha-keto esters are prepared through a cyanide-catalyzed benzoin-type reaction with silyl glyoxylates and aldehydes. The products undergo a dynamic kinetic resolution to provide enantioenriched orthogonal... The Pivotal Role of Chelation as a Stereochemical Control Element in Non-Evans Anti Aldol Product Formation [作者：SHINISHA C B; SUNOJ RAGHAVAN B,期刊：Organic Letters, 页码：2868-2871 , 文章类型： Article，,卷期：2010年12-12] The origin of stereoselective formation of Evans syn and non-Evans anti aldol products in the reaction between titanium enolate derived from N-succinyloxazolidinone and benzaldehyde is established by using transition-sta... Total Synthesis of Auripyrone B Using a Non-Aldol Aldol-Cuprate Opening Process [作者：JUNG MICHAEL E; CHAUMONTET MANON; SALEHIRAD RAMIN,期刊：Organic Letters, 页码：2872-2875 , 文章类型： Article，,卷期：2010年12-12] A non-aldol aldol cuprate opening generates the polypropionate 11 from the epoxy ether 14 in eight steps as a single diastereomer. A highly stereoselective aldol reaction of 8 with 9 gives the aldol product 7 in high yie... A Highly Selective OFF-ON Red-Emitting Phosphorescent Thiol Probe with Large Stokes Shift and Long Luminescent Lifetime [作者：JI SHAOMIN; GUO HUIMIN; YUAN XIAOLIN; LI XIAOHUAN; DING HAIDONG; GAO PENG; ZHAO CHUNXIA; WU WENTING; WU WANHUA; ZHAO JIANZHANG,期刊：Organic Letters, 页码：2876-2879 , 文章类型： Article，,卷期：2010年12-12] An OFF-ON red-emitting phosphorescent thiol probe is designed by using the (MLCT)-M-3 photophysics of Ru(II) complexes, i.e., with Ru(II) as the electron donor. The probe is non-luminescent because the MLCT is corrupted ...