个性化文献订阅>文章检索

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24条记录   Stereoselective synthesis of saturated heterocycles via palladium-catalyzed alkene carboetherification and carboamination reactions. [作者：Wolfe, John P.;,期刊：SYNLETT, 页码：2913-2937 , 文章类型： 综述，,卷期：2008年-19] A review. The development of Pd-catalyzed carboetherification and carboamination reactions between aryl or alkenyl halides and alkenes bearing pendant heteroatoms is described. These transformations effect the stereose... Asymmetric Baylis-Hillman reaction: an enchanting expedition. [作者：Krishna, Palakodety Radha;Sachwani, Rachna;Reddy, Purumandla Srinivas;,期刊：SYNLETT, 页码：2897-2912 , 文章类型： 综述，,卷期：2008年-19] A review. The development of new strategies for realizing the asym. Baylis-Hillman reaction remains at the forefront of research into this important org. reaction. This review gives a comprehensive account of the work ... Design and synthesis of 3'-deoxy-3'-fluoro-2'-O,3'-C-vinylene-linked bicyclic purine nucleoside. [作者：Zhao, Baojuan;Chang, Junbiao;Wang, Qiang;Du, Yunfei;Zhao, Kang;,期刊：SYNLETT, 页码：2993-2996 , 文章类型： 研究论文，,卷期：2008年-19] Starting from D-xylose via a 3-deoxy-3a-C-ethynyl-3-fluoro sugar as a key intermediate, a novel fluorinated bicyclic purine nucleoside has been synthesized. A neighboring-group participation pathway and a mechanism invo... A concise synthesis of (+)-polyoxamic acid and (+)-5-O-carbamoyl polyoxamic acid. [作者：Kim, In Su;Li, Qing Ri;Dong, Guang Ri;Woo, Seol Hee;Park, Hyun-ju;Zee, Ok Pyo;Jung, Young Hoon;,期刊：SYNLETT, 页码：2985-2988 , 文章类型： 研究论文，,卷期：2008年-19] The concise synthesis of (+)-polyoxamate and (+)-5-O-carbamoylpolyoxamate from L-xylose in 7 or 6 steps, resp., was reported. The key steps include a diastereoselective amination of syn-1,2-polybenzyl ethers using chlor... Synthesis of chiral carbohydrate ionic liquids. [作者：Plaza, Patrice G. J.;Bhongade, Bhoomendra A.;Singh, Gurdial;,期刊：SYNLETT, 页码：2973-2976 , 文章类型： 研究论文，,卷期：2008年-19] Chiral room temp. ionic liqs., contg. a carbohydrate moiety linked at the anomeric center to an N-methylimidazolium group were synthesized. The ionic liqs. were prepd. in a concise manner and provided ready access to bot... Preparation of optically active 1-O-alkyl-3-O-arylsulfonyl-sn-glycerol derivatives: substrate engineering in enzyme-mediated enantioselective hydrolysis. [作者：Shimada, Yasutaka;Sato, Hiroshi;Mochizuki, Sachiyo;Matsumoto, Kazutsugu;,期刊：SYNLETT, 页码：2981-2984 , 文章类型： 研究论文，,卷期：2008年-19] Lipase PS catalyzes the enantioselective hydrolysis of various 2-acetyl compds. of 1-O-alkyl-3-O-arylsulfonyl-sn-glycerol derivs. to afford the corresponding optically active compds. Changing the structure of the 1-O-al... 4-(Isoxazol-3-yl)pyrimidines from pyrimidinyl nitrile oxides. [作者：Choung, Wonken;Lorsbach, Beth A.;Sparks, Thomas C.;Ruiz, James M.;Kurth, Mark J.;,期刊：SYNLETT, 页码：3036-3040 , 文章类型： 研究论文，,卷期：2008年-19] The 1,3-dipolar cycloaddn. of pyrimidinealdoxime-derived nitrile oxides and alkynes delivers 4-(isoxazol-3-yl)pyrimidines. This procedures accommodates 3 points of diversification around this bisheterocyclic scaffold, a... One-pot synthesis of trifluoromethyl-containing pyrazoles via sequential Yb(PFO)3-catalyzed three-component reaction and IBX-mediated oxidation. [作者：Shen, Li;Zhang, Jian;Cao, Song;Yu, Jinlong;Liu, Nianjin;Wu, Jingjing;Qian, Xuhong;,期刊：SYNLETT, 页码：3058-3062 , 文章类型： 研究论文，,卷期：2008年-19] Fourteen trifluoromethyl-contg. fully substituted pyrazoles, e.g., I (R1 = H, Me, CN, Me2N, 4-CF3O, Br; R2 = H, 4-F, 4-Me), were synthesized via Yb(PFO)3-catalyzed three-component condensations of arom. hydrazines, aldeh... FeCl3-catalyzed propargylation-cycloisomerization tandem reaction: a facile one-pot synthesis of substituted furans. [作者：Ji, Wen-hua;Pan, Ying-ming;Zhao, Su-yan;Zhan, Zhuang-ping;,期刊：SYNLETT, 页码：3046-3052 , 文章类型： 研究论文，,卷期：2008年-19] An efficient FeCl3-catalyzed tandem propargylation-cycloisomerization reaction of propargylic alcs. or acetates with 1,3-dicarbonyl compds., leading to the synthesis of substituted furans, e.g., I, has been developed. Ligand-free C-S bond formation catalyzed by copper(I) oxide. [作者：Xu, Hua-Jian;Zhao, Xiao-Yang;Fu, Yao;Feng, Yi-Si;,期刊：SYNLETT, 页码：3063-3067 , 文章类型： 研究论文，,卷期：2008年-19] An efficient ligand-free Cu2O-catalyzed C-S bond-formation reaction was developed. A large no. of diaryl sulfides and alkylaryl sulfides could be rapidly assembled using this new reaction protocol. Sila-Sonogashira cross-coupling reactions of activated aryl chlorides with alkynylsilanes. [作者：Nishihara, Yasushi;Inoue, Eiji;Okada, Yoshiaki;Takagi, Kentaro;,期刊：SYNLETT, 页码：3041-3045 , 文章类型： 研究论文，,卷期：2008年-19] Pd/Cu-cocatalyzed sila-Sonogashira cross-coupling of activated aryl chlorides with alkynylsilanes under strictly nonbasic conditions yields unsym. diarylethynes in moderate to good yields. N-Tosyl-(Sa)-binam-L-prolinamide as highly efficient bifunctional organocatalyst for the general enantioselective solvent-free aldol reaction. [作者：Guillena, Gabriela;Najera, Carmen;Viozquez, Santiago F.;,期刊：SYNLETT, 页码：3031-3035 , 文章类型： 研究论文，,卷期：2008年-19] N-Tosyl-(Sa)-binam-L-prolinamide (5 mol%; binam = 1,1'-binaphthyl-2,2'-diamine) and benzoate (1 mol%) were used as catalysts in the enantioselective direct aldol reaction between ketones and aldehydes under solvent-free ... Indium trichloride mediated cleavage of acetonides in the presence of acid-labile functional groups; enhancing the synthetic utility of 1,3-dioxolanyl-substituted 1,2-oxazines. [作者：Pfrengle, Fabian;Dekaris, Vjekoslav;Schefzig, Luise;Zimmer, Reinhold;Reissig, Hans-Ulrich;,期刊：SYNLETT, 页码：2965-2968 , 文章类型： 研究论文，,卷期：2008年-19] InCl3 in an MeCN-H2O mixt. chemoselectively cleaved the isopropylidene acetals of various 1,3-dioxolanyl-substituted 1,2-oxazines as well as carbohydrate derivs. Deprotection of acetonides can be achieved in substrates ... N-Heterocyclic carbenes of indazole as reagents: Indazol-3-ylidene-mediated syntheses of amidines from thiolactams of pyrrolobenzodiazepines. [作者：Lindner, Anika;Schmidt, Andreas;,期刊：SYNLETT, 页码：2961-2964 , 文章类型： 研究论文，,卷期：2008年-19] On decarboxylation, 1,2-dimethylindazolium-3-carboxylate forms in situ the N-heterocyclic carbene 1,2-dimethylindazol-3-ylidene, which proved to be a suitable reagent for amidinations of the monothiolactam of benzo[e]pyr... Synthesis of unsymmetrical heterobiaryls using palladium-catalyzed cross-coupling reactions of lithium organozincates. [作者：Seggio, Anne;Jutand, Anny;Priem, Ghislaine;Mongin, Florence;,期刊：SYNLETT, 页码：2955-2960 , 文章类型： 研究论文，,卷期：2008年-19] Several unsym. heterobiaryls were synthesized through Pd-catalyzed cross-coupling of Li triorganozincates. The latter were prepd. by deprotonative lithiation followed by transmetalation using non-hygroscopic ZnCl2.TMEDA... Three-component, one-pot sequential synthesis of 1,3-disubstituted 5-arylhydantoins. [作者：Olimpieri, Francesca;Volonterio, Alessandro;Zanda, Matteo;,期刊：SYNLETT, 页码：3016-3020 , 文章类型： 研究论文，,卷期：2008年-19] Reaction of carbodiimides with a-bromo(chloro)arylacetates produces N,N'-substituted 5-arylhydantoins under very mild conditions and with high yields. When the carbodiimides are generated in situ by Staudinger reaction,...