NEW SYNTHESIS OF NAPHTHO- AND BENZOXAZOLES: DECOMPOSITION OF NAPHTHO- AND BENZOXAZINONES WITH KOH

Abstract

A method that allows the synthesis of 4 different heterocyclic systems of fused aryl oxazoles, i.e., naphtho[1,2-d], naphtho[2,1-d], naphtho[2,3-d], and benzo[d]oxazoles in reasonable yield is described. This method consists of the decomposition of naphtho- and benzoxazinones with KOH.

ACKNOWLEDGMENTS

We thank the FONDECYT, Project 1940446 and DTI, Project Q 3336–9323 Universidad de Chile, for the financial support and CEPEDEQ for use of instruments. A. Cañete thanks CONICYT for a fellowship.