A novel synthetic approach to mitomycins. One step synthesis of a 5,10‐dioxo‐1H‐pyrrolo[1,2‐a]benz[f]indole

Abstract
A new method for the synthesis of pyrrolo[1,2‐a]indoles, starting from enamines via 1,5‐dipolar cyclization is described. The method is considered to be useful for the synthesis of mitomycin type of compounds.