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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28条记录   Recent Developments in Nitrone Chemistry: Some Novel Transformations [作者：YANG JIONG,期刊：SYNLETT, 页码：2293-2297 , 文章类型： Article，,卷期：2012年-16] Despite the long history of nitrone chemistry, novel transformations of nitrones continue to be discovered. This article describes some recent breakthroughs in the development of new transformations of nitrones. These ne... The Chemistry and Biology of Nakiterpiosin - C-nor-D-Homosteroids [作者：GAO SHUANHU; WANG QIAOLING; WANG GELIN; LOMENICK BRETT; LIU JIE; FAN CHIHWEI; DENG LIHWEN; HUANG JING; LUM LAWRENCE; CHEN CHUO,期刊：SYNLETT, 页码：2298-2310 , 文章类型： Article，,卷期：2012年-16] Isolated from the sponge Terpios hoshinota that causes coral black disease, nakiterpiosin was the first C-nor-D-homosteroid discovered from a marine source. We provide in this account an overview of the chemistry and bio... Polar Intramolecular Cross-Cycloadditions of Cyclopropanes toward Natural Product Synthesis [作者：WANG ZHONGWEN,期刊：SYNLETT, 页码：2311-2327 , 文章类型： Article，,卷期：2012年-16] In this account we have systematically described the acid-promoted intramolecular cycloadditions of activated cyclopropanes, which were conceptually classified into intramolecular cross-cycloadditions (IMCC) and intramol... beta-Cyclodextrin-Mediated Acetic Acid Catalyzed Diastereoselective Mannich Reaction in Water [作者：SUKUMARI SUBBIAH; AZATH ISMAIL ABULKALAM; PITCHUMANI KASI,期刊：SYNLETT, 页码：2328-2332 , 文章类型： Article，,卷期：2012年-16] A highly efficient diastereoselective Mannich reaction has been carried out in water using a catalytic amount of beta-cyclodextrin as a chiral host in the presence of acetic acid to give the corresponding beta-aminoketon... Triphenylphosphine as a Ligand for the Pd-Catalyzed Amination of Unactivated Aryl Chlorides with Anilines Promoted by Salicylaldimine [作者：LIU TAOPING; CHENG QIANG; SONG WENJING; CAI LIANGZHEN; TAO XIAOCHUN,期刊：SYNLETT, 页码：2333-2336 , 文章类型： Article，,卷期：2012年-16] An efficient and selective amination of unactivated aryl chlorides with anilines catalyzed by mixed ligand Pd catalytic system of Ph3P-salicylaldimine has been developed for the preparation of diarylamines. The benzyne m... Efficient Synthesis of 2,5-Diketopiperazines by Staudinger-Mediated Cyclization [作者：BEAGLE LUCAS K; HANSEN FINN K; MONBALIU JEANCHRISTOPHE M; DESROSIERS MICHAEL P; PHILLIPS ANGELA M; STEVENS CHRISTIAN V; KATRITZKY ALAN R,期刊：SYNLETT, 页码：2337-2340 , 文章类型： Article，,卷期：2012年-16] Solution- and solid-phase Staudinger-mediated cyclizations were assessed to efficiently prepare hetero-2,5-diketopiperazines from their protected azido dipeptide thioesters under microwave irradiation. Short reaction tim... Stereoselective Glycosylations by Nitrosyl Tetrafluoroborate-Catalyzed Activation of Glycosyl Trichloroacetimidate Derivatives [作者：SAU ABHIJIT; SANTRA ABHISHEK; MISRA ANUP KUMAR,期刊：SYNLETT, 页码：2341-2348 , 文章类型： Article，,卷期：2012年-16] Efficient stereoselective glycosylation conditions have been developed by using nitrosyl tetrafluoroborate (NOBF4) promoted activation of glycosyl trichloroacetimidate derivatives. A series of mono- and disaccharide deri... Synthesis of Cyclohexa-1,3-dienamines by Formal [3+3] Cycloaddition [作者：TOUM VALERIE; LHOMMET GERARD; DECHOUX LUC,期刊：SYNLETT, 页码：2349-2352 , 文章类型： Article，,卷期：2012年-16] Formal [3+3] cycloadditions of beta-carboxymethylenamino esters with acrolein derivatives give a range of cyclohexa-2,6-dicarboxymethyl-1,3-dienamines that are potential acceptordonor-acceptor systems. New Syntheses of 3-Aroylflavone Derivatives; Knoevenagel Condensation and Oxidation versus One-Pot Synthesis [作者：VAZ PATRICIA A A M; PINTO DIANA C G A; ROCHA DJENISA H A; SILVA ARTUR M S; CAVALEIRO JOSE A S,期刊：SYNLETT, 页码：2353-2356 , 文章类型： Article，,卷期：2012年-16] Two syntheses of 3-aroylflavones have been established. In the first synthesis the use of microwave irradiation led to an improvement in the yields of both the Knoevenagel condensation of beta-diketones with aldehydes to... A Facile Synthesis and Chemoselective Reactions of Dihydrothiouracils [作者：KUMAR VARUN; KHATIK GOPAL L; PAL ANANG; PRANEETH MOHAN R; BHATTARAI SANJAY; NAIR VIPIN A,期刊：SYNLETT, 页码：2357-2362 , 文章类型： Article，,卷期：2012年-16] A highly efficient procedure was devised for the synthesis of 3-(3-arylthioureido)propanoic/butanoic acid and its cyclization to (3-aryl/3-aryl-6-methyl)-2-thioxotetrahydropyrimidin-4(1H)-one derivatives. Carbonyl diimid... Site-Selective Oxidation of Vitamin B-12 Using 2-Iodoxybenzoic Acid [作者：CLARDYJAMES SUSAN; BERNSTEIN JAIME L; KERWOOD DEBORAH J; DOYLE ROBERT P,期刊：SYNLETT, 页码：2363-2366 , 文章类型： Article，,卷期：2012年-16] Reaction of vitamin B-12 (B-12) with excess 2-iodoxybenzoic acid and 2-hydroxypyridine leads to selective oxidation of the 5'-hydroxyl group of the ribose tail of B-12 in a 30% isolated yield. The acid derivative was pur... Stereodivergent Synthesis of D,D- and L,L-glycero-beta-allo-Heptopyranoses on a Dioxanone Scaffold [作者：PALYAM NAGARJUNA; NIEWCZAS IZABELLA; MAJEWSKI MAREK,期刊：SYNLETT, 页码：2367-2370 , 文章类型： Article，,卷期：2012年-16] We report a stereodivergent synthesis of both enantiomers of glycero-allo-heptose from 2,2-dimethyl-1,3-dioxan-5-one, a readily available nonchiral scaffold, and from two different synthetic equivalents of glyoxal: dimet... Bicatalytic Allylation-Cross-Metathesis Reactions as gamma-Carbonyl Cation Equivalents [作者：HENKIE JAKE R; DHALIWAL SUGADAR; GREEN JAMES R,期刊：SYNLETT, 页码：2371-2374 , 文章类型： Article，,卷期：2012年-16] The products corresponding to the reactions of arenes and gamma-carbonyl cations may be obtained by a one-pot, bicatalytic process involving InCl3-catalyzed arene allylation and cross metathesis with electron-deficient a... Vanadium-Catalyzed Oxidation of tert-Butyl N-Hydroxycarbamate to tert-Butyl Nitrosoformate and Its Diels-Alder Reaction with Simple and Functionalized Dienes [作者：HOSHINO YUJIRO; SUZUKI KENZO; HONDA KIYOSHI,期刊：SYNLETT, 页码：2375-2380 , 文章类型： Article，,卷期：2012年-16] A general and efficient vanadium-catalyzed oxidation of tert-butyl N-hydroxycarbamate to tert-butyl nitrosoformate using alkyl hydroperoxides as terminal oxidants has been developed. The intermediate nitroso compound was... Synthesis of Polysubstituted Naphthalenes by Iron-Catalyzed [2+2+2] Annulation of Grignard Reagents with Alkynes [作者：ILIES LAUREAN; MATSUMOTO ARIMASA; KOBAYASHI MOTOAKI; YOSHIKAI NAOHIKO; NAKAMURA EIICHI,期刊：SYNLETT, 页码：2381-2384 , 文章类型： Article，,卷期：2012年-16] Iron catalyzes the oxidative [2+2+2] annulation of an arylmagnesium compound with two molecules of an internal alkyne via C-H bond activation at 0 degrees C to produce polysubstituted naphthalene. Highly Efficient Asymmetric Conjugate Additions of Aldehydes with Vinyl Sulfones Using a Sulfonamide Organocatalyst [作者：MIURA TSUYOSHI; YUASA HIROKI; MURAHASHI MIHO; INA MARIKO; NAKASHIMA KOSUKE; TADA NORIHIRO; ITOH AKICHIKA,期刊：SYNLETT, 页码：2385-2388 , 文章类型： Article，,卷期：2012年-16] A sulfonamide organocatalyst promotes the asymmetric conjugate addition of branched aldehydes to vinyl sulfones to afford the corresponding adducts with all-carbon quaternary stereocenters in excellent yields with up to ...