Rhodium(III)-catalyzed [3+2] annulative coupling between oximes and electron-deficient alkynes
作者:Xukai Zhou、Songjie Yu、Zisong Qi、Xingwei Li
DOI:10.1007/s11426-015-5408-8
日期:2015.8
Rhodium(III)-catalyzed coupling between ketoximes and alkynes via C-H activation and annulation typically followed the [4+2] selectivity to afford isoquinolines. By designing alkynes bearing a highly electron-withdrawing group and under substrate control, we have successfully switched the selectivity of the coupling between oximes and alkynes to the alternative [3+2] annulation, leading to the efficient
通过CH活化和环化反应,铑(III)催化酮肟和炔烃之间的偶合反应通常遵循[4 + 2]选择性,以得到异喹啉。通过设计带有高吸电子基团的炔烃,并在底物的控制下,我们已成功地将肟和炔烃之间的偶联选择性切换为另一种[3 + 2]环空法,从而实现了茚满胺的高效合成。该方法具有对两种底物的良好区域选择性,高效率,广泛的底物范围和出色的官能团耐受性。