Research Article

Substituent Effects on Regioselectivity of the Diels-Alder Reactions: Reactions of 10-Allyl-1,8-dichloroanthracene with 2-Chloroacrylonitrile, 1-Cyanovinyl Acetate and Phenyl Vinyl Sulfone

Scheme 2

The Plausible Diels-Alder reaction of the ethylene equivalents (4) and (5) with 10-allyl-1,8-dichloroanthracene (3).