Convenient Synthesis of 2,4-Cyclohexadien-1-ones by Regioselective Methylthiomethylation of Phenols.
作者:Sadamu KATAYAMA、Toshio WATANABE、Masashige YAMAUCHI
DOI:10.1248/cpb.41.439
日期:——
A convenient synthesis of a variety of 2, 4-cyclohexadien-1-ones 3-7 is described. Reaction of various phenols 2 having appropriate substituents with an excess of S, S-dimethylsuccinmidosulfonium chloride (Corey-Kim reagent, 1)in the presence of triethylamine proceeded with regioselective methylthiomethylation to give methylthiomethyl, bis(methylthiomethyl), or tris(methylthiomethyl)-2, 4-cyclohexadien-1-ones 3-7 in satisfactory yields.
描述了一种便捷合成多种2,4-环己二烯-1-酮(3-7)的方法。将具有适当取代基的各种酚(2)与过量的S,S-二甲基琥珀酰亚胺磺酸盐氯化物(Corey-Kim Reagent,1)在存在三乙胺的条件下反应,经过区域选择性甲硫基甲基化,得到甲硫基甲基、双(甲硫基甲基)或三(甲硫基甲基)-2,4-环己二烯-1-酮(3-7),产率令人满意。