β-Phenethylmagnesium chlorides react with alkyl halides, tosylates, and sulfates in the presence of a catalytic amount of Cp 2 ZrCl 2 to afford 2-arylalkanes via alkylation of styrene-zirconate intermediates at the benzylic position. Competitive reaction using mixtures of alkyl halides (alkyl-X; X = F, Cl, Br) showed that the reactivities of the halides increase in the order of alkyl-Cl < alkyl-F < alkyl-Br
在催化量的 Cp 2 ZrCl 2 存在下,β-苯
乙基氯化镁与烷基卤化物、甲
苯磺酸盐和
硫酸盐反应,通过
苯乙烯-
锆酸酯中间体在苄位上的烷基化得到 2-芳基
烷烃。使用烷基卤(烷基-X;X = F、Cl、Br)混合物的竞争反应表明,卤化物的反应性按烷基-Cl < 烷基-F < 烷基-Br 的顺序增加,相对速率为 1: ] 9:428。