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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60条记录   A One-Pot Approach to Delta(2)-Isoxazolines from Ketones and Arylacetylenes [作者：SCHMIDT ELENA YU; TATARINOVA INNA V; IVANOVA ELENA V; ZORINA NADEZHDA V; USHAKOV IGOR A; TROFIMOV BORIS A,期刊：Organic Letters, 页码：104-107 , 文章类型： Article，,卷期：2013年15-1] The sequential reaction of ketones with arylacetylenes and hydroxylamine in the presence of KOBut/DMSO followed by the treatment of the reaction mixture with H2O and KOH leads to Delta(2)-isoxazolines in up to 88% yield.... Palladium-Catalyzed Carboxylative Coupling of Benzyl Chlorides with Allyltributylstannane: Remarkable Effect of Palladium Nanoparticles [作者：FENG XIUJUAN; SUN ANLE; ZHANG SHENG; YU XIAOQIANG; BAO MING,期刊：Organic Letters, 页码：108-111 , 文章类型： Article，,卷期：2013年15-1] Palladium-catalyzed carboxylative coupling of benzyl chlorides with allyltributylstannane was successfully conducted to produce benzyl but-3-enoates in satisfactory to good yields. The carboxylative coupling reaction occ... C2-Selective Direct Alkynylation of Indoles [作者：TOLNAI GERGELY L; GANSS STEPHANIE; BRAND JONATHAN P; WASER JEROME,期刊：Organic Letters, 页码：112-115 , 文章类型： Article，,卷期：2013年15-1] The first C2-selective alkynylation of indoles using the hypervalent iodine reagent triisopropylsilylethyny1-1,2-benziodoxol-3(1H)-one (TIPS-EBX) with Pd(II) as a catalyst is described. This convenient and robust method ... Catenation of Calixarene Annulus [作者：GAETA CARMINE; TALOTTA CARMEN; MIRRA SILVIA; MARGARUCCI LUIGI; CASAPULLO AGOSTINO; NERI PLACIDO,期刊：Organic Letters, 页码：116-119 , 文章类型： Article，,卷期：2013年15-1] Through-the-annulus-catenated calixarenes have been obtained, for the first time, by exploiting the "superweak anion" approach that allows the threading of the calix cavity with functionalized dialkylammonium axles. In a... Fluevirosines A-C: A Biogenesis Inspired Example in the Discovery of New Bioactive Scaffolds from Flueggea virosa [作者：ZHANG HUE; ZHANG CHUANRUI; ZHU KONGKAI; GAO ANHUI; LUO CHENG; LI JIA; YUE JIANMIN,期刊：Organic Letters, 页码：120-123 , 文章类型： Article，,卷期：2013年15-1] Biogenesis inspired chemical investigation of a Chinese folk medicine, Flueggea virosa, returned three unprecedented C,C-linked trimeric Securinega alkaloids, fluevirosines A-C (1-3). Their absolute structures were chara... Reversible Molecular Switch of Acridine Red by Triarylpyridine-Modified Cyclodextrin [作者：ZHANG YINGMING; HAN MIN; CHEN HONGZHONG; ZHANG YAN; LIU YU,期刊：Organic Letters, 页码：124-127 , 文章类型： Article，,卷期：2013年15-1] A novel molecular switch based on the supramolecular complex of 2,4,6-triarylpyridine modified beta-cyclodextrin and acridine red was successfully constructed in aqueous solution, displaying the controlled photophysical ... A Catalytic Asymmetric Isatin-Involved Povarov Reaction: Diastereo- and Enantioselective Construction of Spiro[indolin-3,2 '-quinoline] Scaffold [作者：SHI FENG; XING GUIJUAN; ZHU RENYI; TAN WEI; TU SHUJIANG,期刊：Organic Letters, 页码：128-131 , 文章类型： Article，,卷期：2013年15-1] The first catalytic asymmetric isatin-involved Povarov reaction has been established. This method provides an unprecedented approach to access the enantioenriched spiro[indolin-3,2'-quinoline] scaffold with concomitant c... Total Syntheses of (+/-)-alpha-Lycorane and (+/-)-1-Deoxylycorine [作者：JUNG YONGGEUN; LEE SANGCHOUL; CHO HYUNKYU; DARVATKAR NITIN B; SONG JIYOUNG; CHO CHEONGYU,期刊：Organic Letters, 页码：132-135 , 文章类型： Article，,卷期：2013年15-1] New synthetic routes to (+/-)-alpha-lycorane and (+/-)-1-deoxylycorine were exploited. The endo-cycloadduct of 3,5-dibromo-2-pyrone with styrene-type dienophile provided the pivotal intermediate for the syntheses of the ... Ruthenium-Catalyzed Pyrrole Synthesis via Oxidative Annulation of Enamides and Alkynes [作者：LI BIN; WANG NUANCHENG; LIANG YUJIE; XU SHANSHENG; WANG BAIQUAN,期刊：Organic Letters, 页码：136-139 , 文章类型： Article，,卷期：2013年15-1] An efficient and regioselective ruthenium-catalyzed oxidative annulation of enamides with alkynes via the cleavage of C(sp(2))-H/N-H bonds is reported. The reactions can afford N-acetyl substituted or N-unsubstituted pyr... Palladium-Promoted [2+2+2] Cocyclization of Arynes and Unsymmetrical Conjugated Dienes: Synthesis of Justicidin B and Retrojusticidin B [作者：PATEL RAMESH M; ARGADE NARSHINHA P,期刊：Organic Letters, 页码：14-17 , 文章类型： Article，,卷期：2013年15-1] A facile synthesis of natural and unnatural arylnaphthalenes has been demonstrated via the unprecedented palladium-promoted [2 + 2 + 2] cocyclization of arynes and unsymmetrical conjugated dienes using the N-heterocyclic... Sterically Controlled Iodination of Arenes via Iridium-Catalyzed C-H Borylation [作者：PARTRIDGE BENJAMIN M; HARTWIG JOHN F,期刊：Organic Letters, 页码：140-143 , 文章类型： Article，,卷期：2013年15-1] A mild method to prepare aryl and heteroaryl iodides by sequential C-H borylation and iodination is reported. The regioselectivity of this process is controlled by steric effects on the C H borylation step and is complem... Direct Synthesis of Methylene-1,2-dichalcogenolanes via Radical [3+2] Cycloaddition of Methylenecyclopropanes with Elemental Chalcogens [作者：YU LEI; WU YULAN; CHEN TIAN; PAN YI; XU QING,期刊：Organic Letters, 页码：144-147 , 文章类型： Article，,卷期：2013年15-1] Direct [3 + 2] radical cycloaddition of methylenecyclopropanes and elemental chalcogens (S, Se, Te) can readily occur under simple thermal conditions, providing an efficient, practical method for preparation of useful bu... Catalytic Three-Component One-Pot Reaction of Hydrazones, Dihaloarenes, and Amines [作者：ROCHE MAXIME; HAMZE ABDALLAH; BRION JEANDANIEL; ALAMI MOUAD,期刊：Organic Letters, 页码：148-151 , 文章类型： Article，,卷期：2013年15-1] A new three-component assembly reaction between N-tosylhydrazones, dihalogenated arenes, and various primary and secondary amines was devised, producing nitrogen-containing 1,1'-diarylethylenes in good yields. The two C-... Non-natural Elemane as the "Stepping Stone" for the Synthesis of Germacrane and Guaiane Sesquiterpenes [作者：ANAGNOSTAKI ELISSAVET E; ZOGRAFOS ALEXANDROS L,期刊：Organic Letters, 页码：152-155 , 文章类型： Article，,卷期：2013年15-1] The synthesis of hydroxyelemane 5 from (R)-carvone and its utilization as a common synthetic scaffold to produce structurally diverse germacrane and guaiane sesquiterpenes are described. A highly enantio- and stereoselec... Nudicaulins, Yellow Flower Pigments of Papaver nudicaule: Revised Constitution and Assignment of Absolute Configuration [作者：TATSIS EVANGELOS C; SCHAUMLOEFFEL ANU; WARSKULAT ANNE C; MASSIOT GEORGES; SCHNEIDER BERND; BRINGMANN GERHARD,期刊：Organic Letters, 页码：156-159 , 文章类型： Article，,卷期：2013年15-1] The constitution of the aglycon of nudicaulin has been revised to be a pentacyclic indole alkaloid. The relative and absolute configurations of the two diastereomers, nudicaulins I (3a) and II (3b), have been assigned by... Stereodivergent Synthesis of lminosugars from Stannylated Derivatives of (S)-Vinylglycinol [作者：LUMBROSO ALEXANDRE; BEAUDET ISABELLE; TOUPET LOIC; LE GROGNEC ERWAN; QUINTARD JEANPAUL,期刊：Organic Letters, 页码：160-163 , 文章类型： Article，,卷期：2013年15-1] An original access to iminosugars from a cis/trans mixture of stannylated oxazolidinones 5 is reported. The dehydropiperidines 7-trans and 7-cis were obtained stereoselectively with an RS and SS configuration depending o...