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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68条记录   PdCl2-Catalyzed Oxidative Cycloisomerization of 3-Cyclopropylideneprop-2-en-1-ones [作者：MIAO MAOZHONG; CAO JIAN; ZHANG JINGJING; HUANG XIAN; WU LULING,期刊：Organic Letters, 页码：2718-2721 , 文章类型： Article，,卷期：2012年14-11] A novel PdCl2-catalyzed oxidative cycloisomerization of 3-cyclopropylideneprop-2-en-1-ones, providing a facile synthesis of highly strained functionalized 2-alkylidenecyclobutanones via furan-fused cyclobutene intermedia... Iron-Catalyzed 2-Arylbenzoxazole Formation from o-Nitrophenols and Benzylic Alcohols [作者：WU MINGYUE; HU XIONG; LIU JUAN; LIAO YUNFENG; DENG GUOJUN,期刊：Organic Letters, 页码：2722-2725 , 文章类型： Article，,卷期：2012年14-11] The iron-catalyzed 2-arylbenzoxazole formation from o-nitrophenols and benzylic alcohols using hydrogen transfer is described. Various 2-arylbenzoxazoles were selectively obtained in good to excellent yields. The reactio... Catalytic Asymmetric Sulfenylation of Unprotected 3-Substituted Oxindoles [作者：CAI YUNFEI; LI JUN; CHEN WEILIANG; XIE MINGSHENG; LIU XIAOHUA; LIN LILI; FENG XIAOMING,期刊：Organic Letters, 页码：2726-2729 , 文章类型： Article，,卷期：2012年14-11] Catalytic asymmetric sulfenylation of unprotected 3-substituted oxindoles has been developed via cooperative catalysis of a chiral N,N-dioxide-Sc(OTf)(3) complex and a Bronsted base. Utilizing readily available N-(phenyl... Solid-Phase Synthesis of Lysobactin (Katanosin B): Insights into Structure and Function [作者：HALL EDWARD A; KURU ERKIN; VANNIEUWENHZE MICHAEL S,期刊：Organic Letters, 页码：2730-2733 , 文章类型： Article，,卷期：2012年14-11] The solid phase synthesis of the cyclic depsipeptide antibiotic lysobactin is described. The natural product was synthesized via a linear approach using mostly an Fmoc-strategy solid phase peptide synthesis (SPPS) with a... Highly Enantio- and Diastereoselective Vinylogous Aldol Reaction by LiCl-Assisted BINOL-Titanium Species [作者：WANG GUOWEI; WANG BAOMIN; QI SHUAI; ZHAO JINFENG; ZHOU YUHAN; QU JINGPING,期刊：Organic Letters, 页码：2734-2737 , 文章类型： Article，,卷期：2012年14-11] The first highly enantio- and diastereoselective vinylogous aldol reaction between propionyl acetate-derived Brassard's diene and aldehydes was accomplished by titanium lithium combined Lewis acid, affording delta-hydrox... A One-Pot Double C-H Activation Palladium Catalyzed Route to a Unique Class of Highly Functionalized Thienoisoquinolines [作者：WONG NICHOLAS W Y; FORGIONE PAT,期刊：Organic Letters, 页码：2738-2741 , 文章类型： Article，,卷期：2012年14-11] The synthesis of a unique class of highly functionalized 3,4-thienoisoquinolines via an efficient palladium-catalyzed one-pot, regioselective double C H activation is presented. This class of biologically relevant compou... Total Syntheses of Chelidonine and Norchelidonine via an Enamide-Benzyne-[2+2] Cycloaddition Cascade [作者：MA ZHIXIONG; FELTENBERGER JOHN B; HSUNG RICHARD P,期刊：Organic Letters, 页码：2742-2745 , 文章类型： Article，,卷期：2012年14-11] Total syntheses of chelidonine and norchelidonine featuring an enamide-benzyne-[2 + 2] cycloaddition Initiated cascade is described. The cascade includes a pericyclic ring-opening and Intramolecular Diels-Alder reaction.... An Efficient PIFA-Mediated Synthesis of a Directly Linked Zinc Chlorin Dimer via Regioselective Oxidative Coupling [作者：OUYANG QIN; YAN KAIQI; ZHU YIZHOU; ZHANG CAIHUI; LIU JINZHONG; CHEN CHEN; ZHENG JIANYU,期刊：Organic Letters, 页码：2746-2749 , 文章类型： Article，,卷期：2012年14-11] The synthesis of a directly linked zinc chlorin dimer was first achieved by a facile and efficient oxidative coupling of zinc chlorin monomers with phenyliodine bis(trifluoroacetate) (PIFA). The reaction shows high regio... Bi(OTf)(3)-Catalyzed Cycloisomerization of Aryl-Allenes [作者：LEMIERE GILLES; CACCIUTTOLO BASTIEN; BELHASSEN EMILIE; DUNACH ELISABET,期刊：Organic Letters, 页码：2750-2753 , 文章类型： Article，,卷期：2012年14-11] Intramolecular hydroarylation of allenes was achieved under very mild conditions using bismuth(III) triflate as the catalyst. Efficient functionalization of activated and nonactivated aromatic nuclei led to C C bond form... Palladium-Catalyzed Substitution and Cross-Coupling of Benzylic Fluorides [作者：BLESSLEY GEORGE; HOLDEN PATRICK; WALKER MATTHEW; BROWN JOHN M; GOUVERNEUR VERONIQUE,期刊：Organic Letters, 页码：2754-2757 , 文章类型： Article，,卷期：2012年14-11] Benzylic fluorides are suitable substrates for Pd(0)-catalyzed Tsuji-Trost substitution using carbon, nitrogen, oxygen, and sulfur nucleophiles and for cross-coupling with phenylboronic acid. For the bifunctional substra... Puberunine and Puberudine, Two New C-18-Diterpenoid Alkaloids from Aconitum barbatum var. puberulum [作者：MU ZHENQIANG; GAO HAO; HUANG ZHIYUN; FENG XIAOLIN; YAO XINSHENG,期刊：Organic Letters, 页码：2758-2761 , 文章类型： Article，,卷期：2012年14-11] Two C-18-diterpenoid alkaloids, puberunine (1) and puberudine (2), together with four other new alkaloids, including the first examples having beta-oriented substitution at C-3 and a rare chloro-substituent were isolated... Asymmetric Pericyclic Cascade Approach to Spirocyclic Oxindoles [作者：RICHMOND EDWARD; DUGUET NICOLAS; SLAWIN ALEXANDRA M Z; LEBL TOMAS; SMITH ANDREW D,期刊：Organic Letters, 页码：2762-2765 , 文章类型： Article，,卷期：2012年14-11] The reaction of chiral N-arylnitrones with carbocyclic alkylarylketenes generates spirocyclic oxindoles in good yields and with excellent levels of enantioselectivity (90-99% ee) via a pericyclic cascade process. Preparation of Chiral 3-Arylpyrrolidines via the Enantioselective 1,4-Addition of Arylboronic Acids to Fumaric Esters Catalyzed by Rh(I)/Chiral Diene Complexes [作者：CHUNG YUCHIANG; JANMANCHI DAMODAR; WU HSYUEHLIANG,期刊：Organic Letters, 页码：2766-2769 , 文章类型： Article，,卷期：2012年14-11] A highly efficient rhodium-catalyzed protocol for the preparation of 2-arylsuccinic esters and 3-arylpyrrolidines of high optical purity has been achieved. In the presence of 1 mol % of a chiral diene/Rh(I) catalyst, asy... Hybrid Peptides: Direct Transformation of alpha/alpha, beta-Unsaturated gamma-Hybrid Peptides to alpha/gamma-Hybrid Peptide 12-Helices [作者：BANDYOPADHYAY ANUPAM; GOPI HOSAHUDYA N,期刊：Organic Letters, 页码：2770-2773 , 文章类型： Article，,卷期：2012年14-11] A smooth transformation of unusual planar structures of alpha/vinylogous hybrid peptides to ordered alpha/gamma(4)-hybrid peptide 12-helices and the stereo-chemical preferences of vinylogous amino acid residues in single... Microwave Assisted Synthesis of Py-Im Polyamides [作者：PUCKETT JAMES W; GREEN JOSHUA T; DERVAN PETER B,期刊：Organic Letters, 页码：2774-2777 , 文章类型： Article，,卷期：2012年14-11] Microwave synthesis was utilized to rapidly build Py-Im polyamides in high yields and purity using Boc-protection chemistry on Kaiser oxime resin. A representative polyamide targeting the 5'-WGWWCW-3' (W = A or T) subset... Direct meso-Alkynylation of Porphyrins Doubly Assisted by Pyridyl Coordination [作者：ANABUKI SHOMA; TOKUJI SUMITO; ARATANI NAOKI; OSUKA ATSUHIRO,期刊：Organic Letters, 页码：2778-2781 , 文章类型： Article，,卷期：2012年14-11] Direct meso-alkynylation of beta,beta'-dlpyridylporphyrin with various alkynyllithium reagents has been achieved, in which the beta,beta'-dlpyridyl groups play an important role in facilitating the nucleophilic addition ...