Photoredox-Catalyzed Intermolecular Remote C–H and C–C Vinylation via Iminyl Radicals
作者:Xu Shen、Jia-Jia Zhao、Shouyun Yu
DOI:10.1021/acs.orglett.8b02540
日期:2018.9.7
C(sp3)–H and C–C vinylation of O-acyl oximes with vinyl boronic acids has been achieved. This strategy is enabled by photoreductive generation of iminyl radicals from O-acyl oximes under irradiation by visible light. The translocated carbon-centered radicals, which are generated from the iminyl radicals through 1,5-hydrogen atom transfer or C–C cleavage, can be vinylated with vinyl boronic acids. This
已经实现了用乙烯基硼酸对O-酰基肟进行分子间远程C(sp 3)–H和C–C乙烯基化的统一策略。该策略通过在可见光照射下从O-酰基肟光还原生成亚胺基而实现。亚胺基自由基通过1,5-氢原子转移或CC裂解产生的碳中心自由基可以用乙烯基硼酸乙烯基化。该策略为通过C(sp 3)–H和C–C裂解进行远程官能化开辟了新途径,并为合成酮和腈的γ-乙烯基化提供了一种高效且通用的解决方案。