Construction of Stereogenic α,α-Disubstituted Cycloalkanones via 1° Amine Thiourea Dual Catalysis: Experimental Scope and Computational Analyses
作者:Jun Yong Kang、Ryne C. Johnston、Kevin M. Snyder、Paul Ha-Yeon Cheong、Rich G. Carter
DOI:10.1021/acs.joc.6b00280
日期:2016.5.6
with a ketone containing pre-existing stereocenters has been demonstrated. Computational analyses of the reaction mechanism are reported. In concert with kinetic isotope effect (KIE) experiments, these computational results provide a detailed understanding of the likely mechanism, including the aspects of the organocatalyst scaffold that are critical for stereoselectivity.
通过利用双功能1°胺硫脲催化剂体系,对有机催化的不对称Pfau-d'Angelo反应进行了机理探索和扩展的实验讨论。在环状酮部分和α,β-不饱和亲电体上都证明了底物范围的显着宽度。已经证明了使用含有预先存在的立体中心的酮来探索该方法的匹配和不匹配选择性。报告了反应机理的计算分析。与动力学同位素效应(KIE)实验相结合,这些计算结果对可能的机理提供了详细的了解,包括对立体选择性至关重要的有机催化剂支架方面。