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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29条记录   Organocatalytic Enantioselective Halolactonizations: Strategies of Halogen Activation [作者：TAN CHONG KIAT; ZHOU LING; YEUNG YINGYEUNG,期刊：SYNLETT, 页码：1335-1339 , 文章类型： Article，,卷期：2011年-10] Halolactonization is a very useful organic reaction which has been applied in many syntheses in the past decades. In contrast, its asymmetric variant remains uncommon. Very recently, several organocatalytic halolactoniza... Alternative Approaches to Enolate Chemistry [作者：SHEPPARD TOM D,期刊：SYNLETT, 页码：1340-1344 , 文章类型： Article，,卷期：2011年-10] This article highlights recently developed methods for the in situ generation of enolates from noncarbonyl precursors. Suitable enolate precursors include allylic alcohols, vinyl borates, and alkynes. Development of Bicyclo[3.3.0]octadiene-or Dicyclopentadiene-Based Chiral Diene Ligands for Transition-Metal-Catalyzed Reactions [作者：FENG CHENGUO; XU MINGHUA; LIN GUOQIANG,期刊：SYNLETT, 页码：1345-1356 , 文章类型： Article，,卷期：2011年-10] This account summarizes our efforts on the design, synthesis, and application of two classes of chiral diene ligands bearing bicyclo[3.3.0] octadiene or dicyclopentadiene skeletons. These chiral diene ligands can be read... Metal-Stabilized o-Quinone Methides, Thioquinones, and Selenoquinones: Trapping Important Reactive Intermediates and Beyond [作者：AMOURI HANI,期刊：SYNLETT, 页码：1357-1369 , 文章类型： Article，,卷期：2011年-10] Quinone methides (quinomethanes) act as important intermediates in organic syntheses, as well as in chemical and biological processes. However, examples of such isolated species are scarce owing to their high reactivity.... Tetrakis(trimethylsilyl) Ethenylidene-1,1-bisphosphonate: A Mild and Convenient Michael Acceptor for the Synthesis of 2-Aminoethylidene-1,1-bisphosphonic Acids and Their Potassium Salts [作者：SHEVCHUK MICHAEL V; SOTIROPOULOS JEANMARC; MIQUEU KARINNE; ROMANENKO VADIM D; KUKHAR VALERY P,期刊：SYNLETT, 页码：1370-1374 , 文章类型： Article，,卷期：2011年-10] A straightforward synthesis of highly functionalized 2-aminoethylidene-1,1-bisphosphonic acids via the Michael addition of amines to easily available tetrakis(trimethylsilyl) ethenylidene-1,1-bisphosphonate, H2C= C[P(O)(... An Integrated Flow and Batch-Based Approach for the Synthesis of O-Methyl Siphonazole [作者：BAUMANN MARCUS; BAXENDALE IAN R; BRASHOLZ MALTE; HAYWARD JOHN J; LEY STEVEN V; NIKBIN NIKZAD,期刊：SYNLETT, 页码：1375-1380 , 文章类型： Article，,卷期：2011年-10] The bisoxazole containing natural product O-methyl siphonazole was assembled using a suite of microreactors via a flow-based approach in concert with traditional batch methods. The use of a toolbox of solid-supported sca... Direct Synthesis of alpha-Keto Esters from Ethylbenzenes Using 48% Aqueous HBr by Aerobic Visible Light Photooxidation [作者：TADA NORIHIRO; BAN KAZUNORI; NOBUTA TOMOYA; HIRASHIMA SHINICHI; MIURA TSUYOSHI; ITOH AKICHIKA,期刊：SYNLETT, 页码：1381-1384 , 文章类型： Article，,卷期：2011年-10] We report that ethylbenzenes can be directly oxidized to the corresponding a-keto esters with molecular oxygen in the presence of 48% aqueous HBr under visible light irradiation. This synthetic procedure is the first exa... Isorhodanine and Thiorhodanine Motifs in the Synthesis of Fused Thiopyrano[2,3-d][1,3]thiazoles [作者：KAMINSKYY DANYLO; VASYLENKO OLEXANDR; ATAMANYUK DMYTRO; GZELLA ANDRZEJ; LESYK ROMAN,期刊：SYNLETT, 页码：1385-1388 , 文章类型： Article，,卷期：2011年-10] Utilization of 4-thioxo-2-(thi)oxothiazolidines in the synthesis of new fused thiopyrano[2,3-d][1,3] thiazole derivatives under Knoevenagel and hetero-Diels-Alder reaction conditions has been studied. A Rapid and Efficient Access to 4-Substituted 2-Amino-4H-chromenes Catalyzed by InCl3 [作者：LAKSHMI NEELAKANDAN VIDHYA; KIRUTHIKA SELVARANGAM E; PERUMAL PARAMASIVAN T,期刊：SYNLETT, 页码：1389-1394 , 文章类型： Article，,卷期：2011年-10] A series of 4-substituted 2-amino-4H-chromenes was synthesized via a simple and efficient one-pot synthesis from salicylaldehyde, malononitrile, and a few cyclic nucleophiles using indium trichloride as a catalyst. The m... Efficient Synthesis of the Spiroacetal Core of Paecilospirone via Oxidative Radical Cyclisation [作者：JAYSMITH MORGAN; FURKERT DANIEL P; SPERRY JONATHAN; BRIMBLE MARGARET A,期刊：SYNLETT, 页码：1395-1398 , 文章类型： Article，,卷期：2011年-10] The spiroacetal core of the microtubule assembly inhibitor paecilospirone has been prepared using two separate oxidative cyclisation methods. A Rapid and Highly Diastereoselective Synthesis of Enantiomerically Pure (4R,5R)- and (4S,5S)-Isocytoxazone [作者：BUCKLEY BENJAMIN R; PAGE PHILIP C BULMAN; MCKEE VICKIE,期刊：SYNLETT, 页码：1399-1402 , 文章类型： Article，,卷期：2011年-10] A three-step protocol for the highly diastereoselective (> 98%) synthesis of both (4R,5R)- and (4S,5S)-isocytoxazone from D-or L-tyrosine is reported. The diastereoselection was confirmed by X-ray crystallography. This s... Synthesis of Novel 1-Aryl-9H-xanthen-9-ones [作者：ESTEVES CATIA I C; SANTOS CLEMENTINA M M; BRITO CRISTELA M; SILVA ARTUR M S; CAVALEIRO JOSE A S,期刊：SYNLETT, 页码：1403-1406 , 文章类型： Article，,卷期：2011年-10] A novel route for the synthesis of 1-aryl-9H-xanthen-9-ones is reported. This methodology involves the condensation of 2-methylchromone with cinnamaldehydes leading to (E, E)-2-(4-arylbuta-1,3-dien-1-yl)-4H-chromen-4-one... A Regioselective and High-Yielding Method for Formaldehyde Inclusion in the 3CC Groebke-Blackburn-Bienayme Reaction: One-Step Access to 3-Aminoimidazoazines [作者：SHARMA ANUJ; LI HONGYU,期刊：SYNLETT, 页码：1407-1412 , 文章类型： Article，,卷期：2011年-10] A regioselective, mild, convenient, and effective condition is developed for the inclusion of glyoxylic acid as formaldehyde equivalent in the 3CC reaction towards synthesis of 3-aminoalkyl imidazo-azines. In general, fo... Formal Synthesis of the Bryostatin Northern Hemisphere: Asymmetric Synthesis of the B Ring and C1-C9 Fragment [作者：NAKAGAWAGOTO KYOKO; CRIMMINS MICHAEL T,期刊：SYNLETT, 页码：1413-1418 , 文章类型： Article，,卷期：2011年-10] A formal synthesis of the top half fragment of bryostatin 11 has been developed. Stereoselective construction of the B ring was achieved by using a ring-closing metathesis reaction in conjunction with asymmetric glycolat... An Efficient Copper-Catalyzed Etherification of Aryl Halides [作者：HUANG JINKUN; CHEN YING; CHAN JOHANN; RONK MIKE L; LARSEN ROBERT D; FAUL MARGARET M,期刊：SYNLETT, 页码：1419-1422 , 文章类型： Article，,卷期：2011年-10] An efficient and mild copper-catalyzed ether formation from aryl halides and aliphatic alcohols has been developed. The key to the successful coupling is the use of lithium alkoxide, directly or in situ generated by lith... Nickel-Promoted Carboxylation/Cyclization Cascade of Allenyl Aldehyde under an Atmosphere of CO2 [作者：TAKIMOTO MASANORI; KAWAMURA MITSUNOBU; MORI MIWAKO; SATO YOSHIHIRO,期刊：SYNLETT, 页码：1423-1426 , 文章类型： Article，,卷期：2011年-10] In the presence of a stoichiometric amount of Ni(0) complex, allenyl aldehydes smoothly reacted with carbon dioxide at an ambient temperature and pressure in a regioselective manner. The reaction involves an intramolecul...