Synthesis and Photochemical Cyclization of a Novel Enyne-Carbodiimide

Abstract

The triplet sensitized cyclization of enyne-carbodiimide 4 leads to efficient formation of indoloquinoline 5 with concomittant loss of a methyl group. The efficient loss of the methyl group was explained using AM1 semiempirical calculations.

Keywords

• Carbodiimides
• diradicals
• enynes
• photocyclization
• triplet