作者:Christian Rösner、Ulrich Hennecke
DOI:10.1021/acs.orglett.5b01315
日期:2015.7.2
efficient method for the halocyclization of cyclopropanes has been developed. The cyclopropanes undergo a 1,3-addition reaction to form homohalocyclization products compared to conventional alkene halocyclizations. The reaction can be induced by various electrophilic halogenating agents including 1,3-dibromo-5,5-dimethylhydantoin and N-iodosuccinimide. In cyclopropane derivatives with a preexisting stereocenter
已经开发了一种有效的环丙烷卤环化方法。与常规的烯烃卤环化相比,环丙烷经历1,3-加成反应以形成均卤环化产物。该反应可以通过包括1,3-二溴-5,5-二甲基乙内酰脲和N-碘代琥珀酰亚胺的各种亲电子卤化剂来诱导。在具有预先存在的立体中心的环丙烷衍生物中,可以观察到极好的诱导的非对映选择性。