Facile preparation of organozinc bromides using electrogenerated highly reactive zinc and its use in cross-coupling reaction
作者:Nobuhito Kurono、Tomio Inoue、Masao Tokuda
DOI:10.1016/j.tet.2005.09.031
日期:2005.11
to give zero valent zinc with high reactivity. The reactive zinc was successfully used for an efficient transformation of bromoalkanes into the corresponding organozinc bromides. Organozinc bromides obtained were further used successfully in Pd-catalyzed cross-coupling reaction with various aryl iodides and bromides.
通过电解含有containing作为介体的DMF溶液以及铂阴极和锌阳极,可以轻松制备高反应性锌。发生refer的优先还原以生成相应的自由基阴离子,该自由基阴离子还原了由阳极溶解生成的锌离子,从而获得了具有高反应活性的零价锌。反应性锌已成功用于将溴代烷烃有效转化为相应的有机锌溴化物。所获得的有机锌溴化物进一步成功地用于Pd催化的与各种芳基碘化物和溴化物的交叉偶联反应中。