Reaction of alkenecarboxylic acids with isocyanates via rhodium(iii)-catalyzed C–H activation: a versatile route to cyclic imides?

Organic Chemistry Frontiers Pub Date: 2016-06-13 DOI: 10.1039/C6QO00119J

Abstract

Under rhodium(III) catalysis, substituted propenoic acids successfully reacted with aryl isocyanates to provide cyclic imides via direct functionalization of the β-alkenyl C–H bond followed by intramolecular cyclization. The cascade process has been corroborated by the isolated intermediate. The reaction provides direct access to cyclic imides from readily available starting materials.

Graphical abstract: Reaction of alkenecarboxylic acids with isocyanates via rhodium(iii)-catalyzed C–H activation: a versatile route to cyclic imides
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