We describe the formation of a 3-chloro-2H-chromene via the cascade reaction based on Claisen rearrangement of an aryl 2,3-dichloroallyl ether and the subsequent dehydrochlorination-cyclization. A divergent synthesis of three different 3-isoflavan derivatives was realized by conducting a Suzuki cross-coupling between the cascade reaction-produced 3-chloro-2H-chromene and readily preparable aryl boronic