Intramolecular Heck Reaction of 2- and 3-Iodoindole Derivatives for the Synthesis of β- and γ-Carbolinones.

A new synthesis of β- and γ-carbolinone derivatives was achieved by an intramolecular Heck cyclisation from the corresponding 3-iodo-1H-indole-2-carboxylic acid allyl-amides 8 and 2-iodo-1H-indole-3-carboxylic acid allyl-amides 9.