Comparative Claisen rearrangements of 4-hydroxy- (7) and lyloxy-5,8-et
hano-5,8-dihydro-5-methoxynaphthalene (1) leading after chemoselective
methylation to 4-acetoxy-2-allyl-1,5-dimethoxy-naphthalene (9) were i
nvestigated. Lewis acid mediated Fries rearrangements of 4-acetoxy-2-a
llyl-alkoxy-5-ethoxynaphthalenes lead to the formation of a naphtho[1,
2-b]furan in one case only.