Arenediazonium tetrafluoroborates reacted with 3-chloro-2-methylpropene in the presence of potassium chloride, bromide, and thiocyanate to give the corresponding 1-aryl-3-chloro-2-halo(thiocyanato)-2-methylpropanes. The presence of a copper salt is a necessary condition for the reaction to occur. The yields of the corresponding 1-aryl-3-chloro-2-halo-2-methylpropanes in the Meerwein reaction were approximately twice as low. Introduction of a methyl group to C2 in the 3-chloropropene molecule does not change the reaction regioselectivity.
在
氯化钾、
溴化物和
硫氰酸盐的存在下,四
氟硼酸阿伦迭氮鎓与
3-氯-2-甲基丙烯发生反应,生成相应的 1-芳基-3-
氯-2-卤(
硫氰酸根)-2-甲基
丙烷。
铜盐的存在是反应发生的必要条件。在 Meerwein 反应中,相应的 1-芳基-3-
氯-2-卤代-2-甲基
丙烷的产率大约低两倍。在
3-氯丙烯分子的 C2 中引入一个甲基不会改变反应的区域选择性。