The synthesis of four isomeric bisthienothiepinones
作者:Jeffrey A. Charonnat、Joseph M. Muchowski、Peter H. Nelson
DOI:10.1002/jhet.5570200447
日期:1983.7
The displacement reaction between sodium thiophene-3-thiolate and methyl 3-(bromomethyl)thiophene-2-carboxylate (5) gave the expected thioether 7a. Basic hydrolysis afforded the carboxylicacid 7b; conversion to the acidchloride, and treatment of the latter with stannicchloride then produced the bisthienothiepinone 1. Using analogous reactions the isomers 2-4 were also synthesized.