Synthesis of Indolo[2,1-a][2]benzazepine and Indolo[2,1-a][2]-benzazocine

The synthesis of functionalised 6,7-dihydro-5 H-indolo[2,1- A][2]benzazepineand 5,6,7,8-tetrahydroindolo[2,1- A][2]benz-azocinefrom methyl 2-bromo-3-cyclohexyl-1 H-indole-6-carboxy-late, involvingRCM as the key step to generate the tetracyclic indolo[2,1- A][2]benzazepineand indolo[2,1- A][2]benzazocinecore structure, is outlined.