SYNTHESIS OF 2-PROPYLANTHRALIN AND 2,7-DIPROPY LANTHRALIN VIA REDUCTIVE CLAISEN REARRANGEMENT OF ALLYLOXYANTHRAQUINONES

Abstract

Reductive Claisen rearrangement of 1-allyloxy-8-methoxy-9, 10-anthraquinone
followed by demethylation and reduction, and of 1,8-bisallyloxy-9,lO-anthraquinone followed by reduction provides regiospecific syntheses of 2-propyl- and 2,7-dipropyl anthralin