期刊
BULLETIN OF THE CHEMICAL SOCIETY OF JAPAN
卷 80, 期 9, 页码 1780-1784出版社
CHEMICAL SOC JAPAN
DOI: 10.1246/bcsj.80.1780
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A new and convenient method for the preparation of 3-substituted benzo[b]thiophenes was developed. alpha-Substituted 2-(I-phenylethylthio)styrenes, which could easily be prepared from 2-mercaptophenyl ketones or benzenethiols in two or three steps, respectively, underwent 5-endo cyclization on treatment with iodine in the presence of sodium hydrogencarbonate in acetonitrile at room temperature to give 3-substituted benzo[b]thiophenes in fair to good yields.
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