作者:Manuela Delgado-Rebollo、Auxiliadora Prieto、Pedro J. Pérez
DOI:10.1002/cctc.201400097
日期:2014.7
derivatives at C3 by carbene transfer from different diazoesters in a high‐yield transformation involving low catalyst loadings and short reaction times. This system has shown that the previously proposed dichotomy of carbene addition (to the double bond) vs carbene insertion (to the CH bond) corresponds to two consecutive reaction steps: the cyclopropane intermediates, observed in the reaction mixtures
络合物[TP BR3的Cu(NCMe)](TP BR3 =氢三(3,4,5-三溴)pyrazolylborate)有效地催化的C 在C3通过从不同diazoesters在高收率转化卡宾转印吲哚衍生物h的官能催化剂用量低,反应时间短。该系统表明,先前提出的碳烯加成(双键)与碳烯插入(成CH键)的二分法对应于两个连续的反应步骤:在反应混合物中观察到的环丙烷中间体是最后的C涉及酸催化的开环过程中的H官能化衍生物。那些原位生成的环丙烷与Me 2 CuLi发生亲核开环,以提供C2和C3官能化的吲哚。