(+)-2Z,4E-5-[(1S)-3-bromo-1-hydroxy-2,6,6-trimethyl-4-oxo-2-cyclohexen-1-yl]-3-methyl-2,4-pentadienoic acid methyl ester 在
copper(l) iodide 、 potassium iodide 作用下,
以
六甲基磷酰三胺 为溶剂,
反应 0.7h,
以44%的产率得到(+)-methyl 2Z,4E-5-[(1S)-1-hydroxy-3-iodo-2,6,6-trimethyl-4-oxo-2-cyclohexen-1-yl]-3-methyl-2,4-pentadienoate