Palladium-Catalyzed Remote<i>meta</i>-Selective C–H Bond Silylation and Germanylation
作者:Atanu Modak、Tuhin Patra、Rajdip Chowdhury、Suman Raul、Debabrata Maiti
DOI:10.1021/acs.organomet.7b00309
日期:2017.7.10
Selective meta-C-H activation of arenes to date has met with a limited number of functionalizations. Expanding the horizon of meta-C-H functionalization, herein we disclose an unprecedented meta-silylation and -germanylation protocol by employing a simple nitrile-based directing template. Longer linkers between the target site and the directing template were successfully explored for meta-silylation (sp(2)-epsilon and sp(2)-zeta). Additionally, synthetic utility was demonstrated with several postsynthetic elaborations and with a formal synthesis of TAC101, a promising drug for the treatment of lung cancer.