Synthesis of 4-Aryl-2-sulfenyl-2<i>H</i>-1-benzothiopyran Derivatives by Cyclization of [2-(1-Aryl-2-methoxyvinyl)phenylthio][methyl(or phenyl)thio]methyllithiums
作者:Kazuhiro Kobayashi、Mai Horiuchi、Kazuna Miyamoto、Osamu Morikawa、Hisatoshi Konishi
DOI:10.1246/bcsj.79.1977
日期:2006.12
phenyl)thio-2H-1 -benzothiopyrans have been prepared in satisfactory yields from the corresponding 1 -(1-aryl-2-methoxyethenyl)-2-[methyl (or phenyl)thiomethyl]thio)benzenes via lithiation of the carbon atom between the two sulfur atoms, followed by intramolecular cyclization with loss of lithium methoxide.
4-Aryl-2-methyl(or phenyl)thio-2H-1-benzothiopyrans 已经从相应的 1-(1-aryl-2-甲氧基乙烯基)-2-[methyl (or phenyl)thiomethyl] 以令人满意的收率制备硫)苯通过两个硫原子之间的碳原子锂化,然后分子内环化失去甲醇锂。