A new indole synthesis via [3 + 3] annulation of 2-(benzotriazol-1-ylmethyl)pyrroles with α,β-unsaturated aldehydes and ketones

Article abstract of DOI:10.1016/0040-4039(96)01216-6

Poly-substituted indoles are readily accessible from substituted 2-(benzotriazol-1-ylmethyl)pyrroles by lithiation, reaction with α,β-unsaturated aldehydes and ketones, and subsequent facile dehydrobenzotriazolylation-cyclodehydration. The substituted 2-(