Ru-Catalyzed selective C–H oxidative olefination with N-heteroarenes directed by pivaloyl amide

Abstract

A highly efficient and practical Ru-catalyzed direct C–H functionalization of indolines and N-alkylaniline with a simple pivaloyl as a directing group is developed. Broad substrate scopes with respect to N-heteroarenes and olefins are observed. The selective C7-position alkynylation for indoline also proceeds well by using inexpensive ruthenium as a catalyst, and pivaloyl as a directing group.