The preparation and some of the reactions of 3-halogeno-2-(2-naphthyl)benzo[b]thiophens and their corresponding sulphones, and the tautomeric keto-sulphone 2,3-dihydro-2-(2-naphthyl)-3-oxobenzo[b]thiophen 1,1-dioxide, are described. Methods, involving sulphonation or halogenation, of separating 2-(2-naphthyl) benzo[b]thiophen from 2,2′-binaphthyl are briefly described.
Alex. H. Lamberton and J. E. Thorpe, J. Chem. Soc. C, 1967, 2571 DOI: 10.1039/J39670002571
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