Synthesis of arnottin I through a palladium-mediated aryl-aryl coupling reaction.

Abstract

6H-Dibenzo[b,d]pyran-6-one, 6H-benzo[d]naphtho[1,2-b]pyran-6-one, and their derivatives were prepared via the palladium mediated aryl-aryl coupling reaction of aryl ortho-halobenzoate. The short step synthesis of arnottin I(1) was achieved by this method. 

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