作者:Antoine Nitelet、Gwilherm Evano
DOI:10.1021/acs.orglett.6b00678
日期:2016.4.15
An efficient and general system for the halogen exchange reaction in alkenyl halides has been developed. Upon reaction with catalytic amounts of copper iodide and trans-N,N′-dimethylcyclohexane-1,2-diamine in the presence of tetramethylammonium chloride or bromide, a wide range of easily accessible alkenyl iodides can be smoothly transformed to their far less available chlorinated and brominated derivatives
已经开发了用于链烯基卤化物中的卤素交换反应的有效且通用的系统。在与催化量的碘化铜和反应反式- ñ,Ñ在四甲基氯化铵或溴化铵,宽范围容易获得烯基碘化物的存在'N'-二甲基-1,2-二胺能够顺利地转化为它们的远较少可用氯化和溴化衍生物,具有极高的收率并完全保留了双键的几何形状。该反应还能够使溴代烯烃氯化,并且可以扩展到宝石-二溴代烯烃的使用。