An environmentally benign, mild, and catalyst-free reaction of quinones with heterocyclic ketene aminals in ethanol: site-selective synthesis of rarely fused [1,2-a]indolone derivatives via an unexpected anti-Nenitzescu strategy

Abstract

The first site-selective methodology for the construction of fused [1,2-<italic>a</italic>]indolone derivatives<italic>via</italic>an unexpected anti-Nenitzescu strategy has been developed.