DL-ethyl-3-hydroxy-3-(3',4'-dichlorophenyl)pentanoate 、
4'-溴苯丙酮 、
溴乙酸乙酯 、
苯 在
锌 DL-ethyl-3-hydroxy-3-(4'-bromophenyl)pentanoate 作用下,
以
乙醚 为溶剂,
以to give 17 g (70.6%) of DL-ethyl-3-hydroxy-3-(4′-bromophenyl)pentanoate, b.p. 193-195° C./12 mm Hg的产率得到DL-ethyl-3-hydroxy-3-(4'-bromophenyl)pentanoate