N-allyl-N-{(S)-(5'-tert-butoxycarbonyl-2'-methylphenyl)[(-)-8-phenylmenthyloxycarbonyl]methyl}-N,N-dimethylammonium bromide 在
potassium tert-butylate 作用下,
以
四氢呋喃 为溶剂,
反应 1.0h,
以91%的产率得到(2R)-2-(5'-tert-butoxycarbonyl-2'-methylphenyl)-2-dimethylamino-4-enoic acid (-)-8-phenylmenthol ester