Heterobimetallic Ir–Sn catalysis: aza-Friedel–Crafts reaction of N-sulfonyl aldimines
作者:Paresh Nath Chatterjee、Arnab Kumar Maity、Swapna Sarita Mohapatra、Sujit Roy
DOI:10.1016/j.tet.2013.01.074
日期:2013.4
The heterobimetallic complex [Ir(COD)(SnCl3)Cl(mu-Cl)](2) catalyzes the aza-Friedel Crafts reaction of 1,3,5-trimethoxybenzene, as well as substituted indoles with N-sulfonyl aldimines leading to the formation of diarylamines and triarylmethanes in good yields. The symmetrical triarylmethanes were also obtained from diarylamines and suitable nucleophiles via simultaneous cleavage of sp(3) C-N bond and elimination of 1,3,5-trimethoxybenzene. (C) 2013 Elsevier Ltd. All rights reserved.