摘要：

Naphthyl vinyl sulfide 5 is prepared by acid-catalyzed addition-dehydration of 2-naphthalenethiol to ethyl acetoacetate. Photocyclization-rearrangement of 5 gives dihydrothiophene 6a, which is desulfurized to 7a; saponification of 7a and polyphosphoric acid cyclodehydration of the resulting acid 7c gives 2-ethyl-1-acenaphthone. A series of 2-thioaryloxyenones 11a-k is prepared by reaction of...

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