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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64条记录   L-Nipecotic Acid-Porphyrin Derivative: A Chiral Host with Introverted Functionality for Chiral Recognition [作者：WU XIAOWEN; STARNES STEPHEN D,期刊：Organic Letters, 页码：3652-3655 , 文章类型： Article，,卷期：2012年14-14] The synthesis and chiral recognition properties of a porphyrin host with introverted functionality is reported. The host is a hybrid of tetraphenyl zinc porphyrin and the N-phenylamide derivative of (S)-nipecotic acid. T... Biomimetic Flavin-Catalyzed Aldehyde Oxidation [作者：MURRAY ALEXANDER T; MATTON PASCAL; FAIRHURST NATHAN W G; JOHN MATTHEW P; CARBERY DAVID R,期刊：Organic Letters, 页码：3656-3659 , 文章类型： Article，,卷期：2012年14-14] The oxidation of alkyl and aryl aldehydes to their corresponding carboxylic acids has been achieved through the action of a biomimetic bridged flavin catalyst. The reaction uses readily available 35% aqueous hydrogen per... Isomerically Pure syn-Anthradithiophenes: Synthesis, Properties, and FET Performance [作者：LEHNHERR DAN; WATERLOO ANDREAS R; GOETZ KATELYN P; PAYNE MARCIA M; HAMPEL FRANK; ANTHONY JOHN E; JURCHESCU OANA D; TYKWINSKI RIK R,期刊：Organic Letters, 页码：3660-3663 , 文章类型： Article，,卷期：2012年14-14] The synthesis of isomerically pure syn-anthradithiophene derivatives (syn-ADTs) is described. X-ray crystallography is used to compare the solid-state arrangement of syn-ADT derivatives 2a,b to the analogous mixture of s... Short Synthesis of Enantiopure trans-3-Arylpiperazine-2-carboxylic Acid Derivatives via Diaza-Cope Rearrangement [作者：KWON SOON HO; LEE SANG MIN; BYUN SANG MOON; CHIN JIK; KIM B MOON,期刊：Organic Letters, 页码：3664-3667 , 文章类型： Article，,卷期：2012年14-14] An efficient synthetic method was developed for the construction of enantiomerically pure trans-3-arylpiperazine-2-carboxylic acid derivatives using diaza-Cope rearrangement (DCR) as a key step starting from (R,R)/(S,S)-... A Click Strategy for the Immobilization of MacMillan Organocatalysts onto Polymers and Magnetic Nanoparticles [作者：RIENTE PAOLA; YADAV JAGJIT; PERICAS MIQUEL A,期刊：Organic Letters, 页码：3668-3671 , 文章类型： Article，,卷期：2012年14-14] A chemically modified, first generation MacMillan imidazolidin-4-one has been anchored onto 1% DVB Merrifield resin and Fe3O4 (5.3 +/- 1.4 nm) magnetic nanoparticles through copper-catalyzed alkyne azide cycloaddition (C... Eryngiolide A, a Cytotoxic Macrocyclic Diterpenoid with an Unusual Cyclododecane Core Skeleton Produced by the Edible Mushroom Pleurotus eryngii [作者：WANG SHAOJUAN; LI YONGXIA; BAO LI; HAN JUNJIE; YANG XIAOJI; LI HERAN; WANG YAQI; LI SHAOJIE; LIU HONGWEI,期刊：Organic Letters, 页码：3672-3675 , 文章类型： Article，,卷期：2012年14-14] Eryngiolide A (1), the first member of C20 diterpenoids with the skeleton deriving from a cyclododecane core fused with two gamma-lactone units, was isolated from the solid culture of the edible mushroom Pleurotus eryngi... Chlorination of Aliphatic Primary Alcohols via Triphosgene-Triethylamine Activation [作者：AYALA CAITLAN E; VILLALPANDO ANDRES; NGUYEN ALEX L; MCCANDLESS GREGORY T; KARTIKA RENDY,期刊：Organic Letters, 页码：3676-3679 , 文章类型： Article，,卷期：2012年14-14] Activation of primary aliphatic alcohols with triphosgene and triethylamine mixtures afforded either alkyl chloride or diethylcarbamate products, and the switch in selectivity appeared to be driven by sterics. The reacti... Transition-State Metal Aryl Bond Stability Determines Regioselectivity in Palladium Acetate Mediated C-H Bond Activation of Heteroarenes [作者：PETIT ALBAN; FLYGARE JOSH; MILLER ALEX T; WINKEL GERRIT; ESS DANIEL H,期刊：Organic Letters, 页码：3680-3683 , 文章类型： Article，,卷期：2012年14-14] Density functional calculations reveal that the stability of developing metal aryl bonds in Pd(II)-acetate C-H activation transition states determines regioselectivity in arene and heteroarene compounds. This kinetic-the... Hybrid System of Metal/Bronsted Acid Relay Catalysis for the Intramolecular Double Hydroarylation and Cationic Cyclization of Diyne Diethers and Diamines [作者：MO JUNTAE; EOM DAHAN; LEE EUICHUL; LEE PHIL HO,期刊：Organic Letters, 页码：3684-3687 , 文章类型： Article，,卷期：2012年14-14] We have developed a hybrid system of metal/Bronsted acid relay catalysis for the intramolecular double hydroarylation and cationic cyclization of diyne diethers and diamines to give 4,4'-bi(2H-chromene), bi(2H-quinoline)... Efficient Microwave-Assisted Pd-Catalyzed Hydroxylation of Aryl Chlorides in the Presence of Carbonate [作者：YU CHAOWU; CHEN GRACE S; HUANG CHENWEI; CHERN JIWANG,期刊：Organic Letters, 页码：3688-3691 , 文章类型： Article，,卷期：2012年14-14] An efficient microwave-assisted, palladium-catalyzed hydroxylation of aryl chlorides in the presence of a weak base carbonate was developed, which rapidly converts aryl and heteroaryl chlorides to phenols, and can be use... Synthesis of B-Ring-Modified Steroids through BF3-Promoted Rearrangement/Substitution of 6 beta-Hydroxy-5,19-cyclosteroids [作者：KRANZ DARIUS P; CHIHA SLIM; GREFFEN AIKE MEIER ZU; NEUDOERFL JOERGMARTIN; SCHMALZ HANSGUENTHER,期刊：Organic Letters, 页码：3692-3695 , 文章类型： Article，,卷期：2012年14-14] The BF3 center dot Et2O-promoted reaction of 3 beta-acetoxy-5,19-cyclo-pregnan-6 beta-ol-20-one with different nucleophiles was investigated. B-homo steroids (3 beta-acetoxy-B-homo-6a-beta-alkoxy-pregna-5(10)-en-20-ones)... Toward the Total Synthesis of Palhinine A: Expedient Assembly of Multifunctionalized Isotwistane Ring System with Contiguous Quaternary Stereocenters [作者：ZHANG GUOBIAO; WANG FANGXIN; DU JIYUAN; QU HU; MA XIAOYAN; WEI MENGXUE; WANG CHENGTAO; LI QIONG; FAN CHUNAN,期刊：Organic Letters, 页码：3696-3699 , 文章类型： Article，,卷期：2012年14-14] The stereoselective, expedient assembly of the key functionalized isotwistane (bridged tricyclo[4.3.1.0(3,7)]decane) system, 5/6/6 ring, with contiguous quaternary stereocenters in Lycopodium alkaloid palhinine A and its... Selective Synthesis of Seven- and Eight-Membered Ring Sultams via Two Tandem Reaction Protocols from One Starting Material [作者：WANG MIN; WANG YANJIE; QI XUEYONG; XIA GUOHUA; TONG KUN; TU JINCHANG; PITTMAN CHARLES U JR; ZHOU AIHUA,期刊：Organic Letters, 页码：3700-3703 , 文章类型： Article，,卷期：2012年14-14] From one starting material, two tandem reaction protocols to synthesize seven- and eight-membered ring sultams were developed. One protocol employs intermolecular epoxide ring-opening by NaN3, followed by an intramolecul... Unusual Friedlander Reactions: A Route to Novel Quinoxaline-Based Heterocycles [作者：SHOKER THARALLAH A; GHATTASS KHALED I; FETTINGER JAMES C; KURTH MARK J; HADDADIN MAKHLUF J,期刊：Organic Letters, 页码：3704-3707 , 文章类型： Article，,卷期：2012年14-14] Acid catalyzed Friedlander reactions of a number of 2,3-dihydro-1H-cyclopenta[b]quinoxaline-1-ones with 2-aminobenzaldehyde yield, unexpectedly, 8H-indolo[3,2-a]phenazine and quinolino[2,3-c]cyclopentadienone[2,3-b]quino... Multifunctional Bacteriochlorins from Selective Palladium-Coupling Reactions [作者：YU ZHANQIAN; PTASZEK MARCIN,期刊：Organic Letters, 页码：3708-3711 , 文章类型： Article，,卷期：2012年14-14] Nonsymmetrical, multifunctional bacteriochlorin derivatives possessing different substituents at the beta-pyrrolic positions have been prepared by stepwise, selective functionalization of 3,13-dibromo-5-methoxybacterioch... Total Synthesis of (+/-)-Decinine via an Oxidative Biaryl Coupling with Defined Axial Chirality [作者：SHAN ZHENHUA; LIU JI; XU LINGMIN; TANG YEFENG; CHEN JIAHUA; YANG ZHEN,期刊：Organic Letters, 页码：3712-3715 , 文章类型： Article，,卷期：2012年14-14] The total synthesis of (+/-)-decinine has been achieved. The key steps in the synthesis involved the formation of lasubine II via a gold catalyzed annulation of 1-(but-3-yn-1-yl)piperidine and the formation of the 12-mem...