Cu-Catalyzed Tandem Aerobic Oxidative Cyclization for the Synthesis of 3,3′-Bipyrroles from the Homopropargylic Amines
作者:Zhenjie Qi、Yong Jiang、Bingxiang Yuan、Yanning Niu、Rulong Yan
DOI:10.1021/acs.orglett.8b02201
日期:2018.8.17
Cu-catalyzed method for the synthesis of 3,3′-bipyrroles from homopropargylic amines through tandem aerobic oxidative cyclization involving the formation of C–C bond has been developed. The features of this reaction are a small number of Cu catalysis and simple starting substrates. Moreover, this procedure exhibits good functional group tolerance and a series of 3,3′-bipyrroles derivatives are obtained
Carbonylative C–C Bond Activation of Aminocyclopropanes Using a Temporary Directing Group Strategy
作者:Gang-Wei Wang、Olga O. Sokolova、Tom. A. Young、Ektor M. S. Christodoulou、Craig P. Butts、John F. Bower
DOI:10.1021/jacs.0c08973
日期:2020.11.11
Temporary directinggroups (TDGs) underpin a range of C-C bond activation methodologies; however, the use of TDGs for the regiocontrolled activation of cyclopropane C-C bonds is underdeveloped. In this report, we show how an unusualring contraction process can be harnessed for TDG-based carbonylative C-C bond activations of cyclopropanes. The method involves the transient installation of an isocyanate-derived
临时导向基团 (TDG) 是一系列 CC 键活化方法的基础;然而,TDGs 用于环丙烷 CC 键的区域控制活化的使用尚不完善。在本报告中,我们展示了如何利用不寻常的环收缩过程来激活环丙烷的基于 TDG 的羰基化 CC 键。该方法涉及异氰酸酯衍生的 TDG 的瞬态安装,而不是依赖于先前启用 TDG 的 CC 键活化中使用的羰基缩合事件。