Various homoallylic alcohols and homobenzylic alcohols were prepared by the reaction between aldehydes and allylic or benzylic halides in the presence of samarium diiodide. This iodide is also a very good reagent for formation of pinacols from aldehydes or ketones. The reactions are especially fast and selective in the case of substituted benzaldehydes. The reactivities of various nitrogen functional
在二
碘化sa存在下,醛与烯丙基或苄基卤化物之间的反应可制得各种均烯丙基醇和均
苄基醇。该
碘化物也是从醛或酮形成石aco醇的非常好的试剂。在取代的
苯甲醛的情况下,该反应特别快速和选择性。还检查了各种氮官能团(
亚胺,
肟,硝基,偶氮,
氰基)对SmI 2的反应性。