Copper-catalyzed divergent construction of naphthofurans and benzochromanes from 2-naphthols, 4-methylene-quinazolin(thi)ones, and <i>N</i>,<i>N</i>-dimethylethanolamine

Abstract

Cu( ii )-catalyzed divergent synthesis of naphthofurans and benzochromanes through [3 + 2 + 1] and [3 + 1 + 1] annulations is established.