Direct C-2 acylation of indoles with toluene derivatives via Pd(ii)-catalyzed C–H activation†
Abstract
A simple and efficient Pd-catalyzed method for the C2-acylation of indoles is described. Less toxic, stable, and commercially available toluene derivatives were used as acyl sources, with tert-butylhydroperoxide (TBHP) as oxidant and pivalic acid as additive, providing moderate to good yields.