Efficient one-pot synthesis of benzopyranobenzopyrans and naphthopyranobenzopyrans by domino aldol-type reaction/hetero Diels–Alder reaction of resorcinols and naphthols
作者:Yong Rok Lee、Yun Mi Kim、Sung Hong Kim
DOI:10.1016/j.tet.2008.10.101
日期:2009.1
The efficient one-pot synthetic approaches for benzopyranobenzopyrans and naphthopyranobenzopyrans are described. The key strategies involve ethylenediamine diacetate-catalyzed cyclization by domino aldol-type reaction/heteroDiels–Alderreaction of resorcinols and naphthols to benzaldehydes with O-allyl ether groups. These reactions provide a rapid route for the synthesis of novel types of polyheterocycles