Fig. 4
From: External oxidant-free electrooxidative [3 + 2] annulation between phenol and indole derivatives
Synthesis of benzofuro[3,2-b]indolines from 2,3-disubstituted N-acetylindoles. a Reaction with 2,3-dimethyl-N-acetylindole by adding ZnCl2. b Reaction with N-acetyl tetrahydrocarbazole by adding ZnCl2
