Simple and practical halogenation of arenes, alkenes and alkynes with hydrohalic acid/H2O2 (or TBHP)
作者:Nivrutti B. Barhate、Anil S. Gajare、Radhika D. Wakharkar、Ashutosh V. Bedekar
DOI:10.1016/s0040-4020(99)00628-6
日期:1999.9
hydrogen peroxide (34 %) or tert-butylhydroperoxide (70 %) and hydrohalic acid is presented. A similar procedure of oxyhalogenation involving the in situ generation of positive halogen reagents is applied for the preparation of vicinal trans-dibromoalkanes and dichloroalkanes from alkenes. The reaction of alkenes with a combination of hydrochloric acid and hydrobromic acid with hydrogen peroxide gave a
提出了使用过氧化氢水溶液(34%)或叔丁基氢过氧化物(70%)和氢卤酸的组合物来卤代芳烃的简单方案。涉及原位产生正卤素试剂的类似的氧卤化方法可用于由烯烃制备邻位的反式-二溴代烷烃和二氯烷烃。烯烃与盐酸和氢溴酸的组合与过氧化氢的反应得到了1-溴2-氯烷烃和1,2-二溴烷烃的混合物。也有类似条件下炔烃的氧化溴化。