Synthesis of Substituted 5-(Pyrrolidin-2-yl)tetrazoles and Their Application in the Asymmetric Biginelli Reaction
作者:Yong-Yong Wu、Zhuo Chai、Xin-Yuan Liu、Gang Zhao、Shao-Wu Wang
DOI:10.1002/ejoc.200801046
日期:2009.2
A series of chiral substituted 5-(pyrrolidin-2-yl)tetrazoles have been synthesized and evaluated as organocatalysts for the asymmetric Biginelli reaction. The relationship between catalytic activity and the different catalyst structures is briefly discussed. By using the optimized catalyst C10 (10 mol-%), a series of 3,4-dihydropyrimidin-2(1H)-one (DHPM) derivatives have been obtained in 63–88 % yields
一系列手性取代的 5-(吡咯烷-2-基)四唑已被合成并评估为不对称 Biginelli 反应的有机催化剂。简要讨论了催化活性与不同催化剂结构之间的关系。通过使用优化的催化剂 C10 (10 mol-%),在 24 分钟内以 63-88% 的产率和 68-81% 的 ee 值获得了一系列 3,4-二氢嘧啶-2(1H)-酮 (DHPM) 衍生物。 h 在室温下。(© Wiley-VCH Verlag GmbH & Co. KGaA, 69451 Weinheim, Germany, 2009)