4,4-bis(3,5-di-t-butyl-4-hydroxyphenylthio)pentanoic acid 在
manganese dioxide
ethyl acetate n-hexane 作用下,
以
正己烷 、
二氯甲烷 为溶剂,
反应 16.0h,
以to give an objective compound (yield 355 mg and 59%)的产率得到14-carboxyethyl-14-methyl-2,4,9,11-tetrakis(t-butyl)-13,15-dithiadispiro[5.0.5.3]pentadeca-1,4,8,11-tetraene-3,10-dione