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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34条记录   A novel and versatile access to task-specific ionic liquids based on 1,2,3-triazolium salts. [作者：Hanelt, Sven;Liebscher, Juergen;,期刊：SYNLETT, 页码：1058-1060 , 文章类型： 研究论文，,卷期：2008年-7] Novel task-specific ionic liqs. based on 1,2,3-triazolium salts were prepd. in a straightforward two-step procedure. Azides and alkynes were transformed into 1,4-disubstituted 1,2,3-triazoles by Cu-catalyzed click react... Synthesis of N,O-heterocycles by intramolecular conjugate addition of a hydroxylamine. [作者：Bates, Roderick W.;Snell, Robert H.;Winbush, SusAnn;,期刊：SYNLETT, 页码：1042-1044 , 文章类型： 研究论文，,卷期：2008年-7] Isoxazolidines and tetrahydro-1,2-oxazines were produced by a tandem deprotection-intramol. Michael addn. of hydroxylamines. For tetrahydrooxazine formation, high stereoselectivity was obsd., even when a quaternary cent... Bronsted acid catalyzed C3-selective propargylation and benzylation of indoles with tertiary alcohols. [作者：Sanz, Roberto;Miguel, Delia;Alvarez-Gutierrez, Julia M.;Rodriguez, Felix;,期刊：SYNLETT, 页码：975-978 , 文章类型： 研究论文，,卷期：2008年-7] A Bronsted acid-catalyzed C(3)-selective tert-alkylation of indoles using tertiary propargylic and benzylic alcs. was developed. New C(3)-propargylated indoles with a quaternary C at the propargylic position were effici... Phosphoric acid diesters as efficient catalysts for hydroaminations of nonactivated alkenes and an application to asymmetric hydroaminations. [作者：Ackermann, Lutz;Althammer, Andreas;,期刊：SYNLETT, 页码：995-998 , 文章类型： 研究论文，,卷期：2008年-7] Catalytic amts. of phosphoric acid diesters enabled highly efficient intramol. hydroaminations of nonactivated alkenes. With an enantiomerically enriched Bronsted acid catalyst, an unprecedented metal-free asym. hydroam... Formal [2+3] cycloaddition between substituted phenols and allylsilane. [作者：Berard, Didier;Racicot, Leanne;Sabot, Cyrille;Canesi, Sylvain;,期刊：SYNLETT, 页码：1076-1080 , 文章类型： 研究论文，,卷期：2008年-7] Treatment of various substituted phenols with allyltrimethylsilane in the presence of iodobenzene diacetate and perfluorinated alc. promotes oxidative formal [2+3] cycloaddn. in moderate to useful yields. Iodine-catalyzed nucleophilic substitution reactions of benzylic alcohols. [作者：Srihari, Pabbaraja;Bhunia, Dinesh C.;Sreedhar, Pamu;Yadav, Jhillu S.;,期刊：SYNLETT, 页码：1045-1049 , 文章类型： 研究论文，,卷期：2008年-7] Mol. iodine efficiently catalyzes the direct nucleophilic substitution of the hydroxy group of benzylic alcs. with carbon and oxygen nucleophiles. A novel InCl3/SiO2-catalyzed hydroarylation of arenes with styrenes under solvent-free conditions. [作者：Sun, Gaojun;Sun, Huayin;Wang, Zhiyong;Zhou, Ming-Ming;,期刊：SYNLETT, 页码：1096-1100 , 文章类型： 研究论文，,卷期：2008年-7] A novel InCl3/SiO2-catalyzed hydroarylation of various styrenes with arenes was developed. The reaction can be carried out under solvent-free conditions to afford a series of 1,1-diaryl alkanes in high yields and with g... An expedient three-component approach to the synthesis of a,a-disubstituted amines under Barbier-like conditions. [作者：Sengmany, Stephane;Le Gall, Erwan;Troupel, Michel;,期刊：SYNLETT, 页码：1031-1035 , 文章类型： 研究论文，,卷期：2008年-7] A series of a,a-disubstituted amines such as diarylmethylamines, 1,2-diarylethylamines, and amino esters were prepd. in acetonitrile using a simple and expedient three-component Mannich-type procedure involving org. hali... TiCl4/tert-butyl hydroperoxide: chemoselective oxidation of secondary alcohols and suppression of Sharpless epoxidation. [作者：Shei, Chun-Tin;Chien, Hao-Lun;Sung, Kuangsen;,期刊：SYNLETT, 页码：1021-1026 , 文章类型： 研究论文，,卷期：2008年-7] Replacing Ti(OCHMe2)4 with TiCl4 under the normal Sharpless epoxidn. conditions resulted in a shut down of the epoxidn. reaction. Instead, a chemoselective oxidn. of secondary alcs. in the presence of primary alcs. occur... Julia olefination as a general route to phenyl (a-fluoro)vinyl sulfones. [作者：He, Maggie;Ghosh, Arun K.;Zajc, Barbara;,期刊：SYNLETT, 页码：999-1004 , 文章类型： 研究论文，,卷期：2008年-7] Mild and efficient synthesis of Ph a-fluorovinyl sulfones via condensation of aldehydes and a ketone with a novel benzothiazolyl based bis-sulfone reagent is reported and this proceeds with moderate to good Z-stereoselec... A new application of hypervalent iodine (l5) reagents with organosulfonic acids for direct a-organosulfonyloxylation carbonyl compounds. [作者：Mahajan, Ulhas S.;Akamanchi, Krishnacharya G.;,期刊：SYNLETT, 页码：987-990 , 文章类型： 研究论文，,卷期：2008年-7] Hypervalent iodine (l5) reagents in combination with p-toluenesulfonic acid when reacted with ketones under reflux temp. in acetonitrile gave a-tosyloxy ketones in moderate to excellent yields. The reaction was develope... First route to phosphoramidites of N2-hydrazinoaryl- and N2-azoaryl-dG adducts and their site-selective incorporation into DNA oligonucleotides. [作者：Boege, Nicolas;Schroeder, Marcus;Meier, Chris;,期刊：SYNLETT, 页码：1066-1070 , 文章类型： 研究论文，,卷期：2008年-7] N(2)-Hydrazinoaryl and N(2)-azoaryl-dG adducts of borderline carcinogens and the bladder and breast carcinogen 4-aminobiphenyl were prepd. using Pd-catalyzed cross-coupling chem. After conversion into the phosphoramidit... Construction of the CDE-ring framework of erinacin E through a Pummerer-type cyclization. [作者：Kobayashi, Shoji;Ishii, Akiko;Toyota, Masahiro;,期刊：SYNLETT, 页码：1086-1090 , 文章类型： 研究论文，,卷期：2008年-7] The CDE-ring framework of erinacin E, a potent stimulator against nerve growth factor (NGF) synthesis, was constructed using stereocontrolled Grignard addn., silicon-promoted Pummerer-type cyclization, and ring-closing m... Total synthesis of 8-methoxygoniodiol via chiron approach. [作者：Yadav, J. S.;Rao, B. Madhava;Sanjeevarao, K.;Reddy, B. V. Subba;,期刊：SYNLETT, 页码：1039-1041 , 文章类型： 研究论文，,卷期：2008年-7] A stereoselective synthesis of (+)-8-methoxygoniodiol (I) is accomplished using readily available d-gluconolactone as a chiral source. The stereoselective addn. of an aryl Grignard reagent on aldehyde and regioselective... Synthesis of C3-C12 fragment of 24-demethylbafilomycin C1 via anti-selective aldol condensation as the key stereocontrol step. [作者：Dai, Wei-Min;Feng, Gaofeng;Wu, Jinlong;Sun, Liang;,期刊：SYNLETT, 页码：1013-1016 , 文章类型： 研究论文，,卷期：2008年-7] An efficient synthesis of the C(3)-C(12) aldehyde fragment of 24-demethylbafilomycin C1 was accomplished for assembling the 16-membered plecomacrolide skeleton according to a 1,3-diene-ene ring-closing metathesis (RCM) s... Regio- and chemoselective unprecedented imino-Diels-Alder reactions of 1-substituted unactivated dienes with N-aryl imines. Part II. [作者：Bhargava, Gaurav;Mahajan, Mohinder P.;Saito, Takao;,期刊：SYNLETT, 页码：983-986 , 文章类型： 研究论文，,卷期：2008年-7] The chemo- as well as regioselective participation of N-aryl imines as 4p component in aza-Diels-Alder reactions with 3-butadienyl-2-azetidinones in the presence of Lewis acid catalysts resulting in novel 3-(2-quinolin-4...