Aryl-radical cyclization onto an enamide double bond. A route to benz[d]indeno[1,2-b]azepines

Article abstract of DOI:10.1016/S0040-4039(00)79318-X

A novel synthesis of benz[d]indeno[1,2-b]azepines from bromoaryl enamides 1a-d has been achieved by way of a regioselective 7-endo-trig radical cyclization with tri-n-butylin hydride.