Alkylation of Bromocyclopropanes and Bromoarenes by Means of Dibutylcopperlithium and Alkyl Halides
作者:Tamejiro Hiyama、Hajime Yamamoto、Koji Nishio、Katuzi Kitatani、Hitosi Nozaki
DOI:10.1246/bcsj.52.3632
日期:1979.12
of bromocyclopropanes with excess dibutylcopperlithium in tetrahydrofuran at −48 °C gives the respective organocopper intermediates which upon quenching with excess alkyl halides afford alkylated cyclo-propanes with retention of the configuration. This process is applied to the synthesis of methyl cascarillate. Bromoarenes are also reduced with dibutylcopperlithium and allylarenes are prepared therefrom
在-48°C 下在四氢呋喃中用过量的二丁基铜锂处理溴环丙烷得到相应的有机铜中间体,当用过量的卤代烷淬灭时,得到保留构型的烷基化环丙烷。该工艺用于合成卡斯卡里酸甲酯。溴芳烃也用二丁基铜锂还原,并由此制备烯丙基芳烃。