4(RS)-hydroxy-2-(5-methoxycarbonyl-5-methylpentylthio)-2-cyclopentenone 、
叔丁基二甲基氯硅烷 在
乙酸乙酯 、 crude product 、 silica gel 作用下,
以
六甲基磷酰三胺 为溶剂,
反应 20.0h,
以to give 594 mg (1.54 mmoles; yield 58.3%) of 4(RS)-t-butyldimethylsilyloxy-2-(5-methoxycarbonyl-5-methyl-pentylthio)-2-cyclopentenone的产率得到6-[3-(tert-Butyl-dimethyl-silanyloxy)-5-oxo-cyclopent-1-enylsulfanyl]-2-methyl-hexanoic acid methyl ester