作者:Feng Wu、Shiwei Lu、Shifa Zhu
DOI:10.1002/adsc.202001152
日期:2020.12.22
catalytic approach to the regioselective intramolecular hydroarylation of ynone has been developed. When ZnI2 was used as catalyst, the umpolung α‐arylation of ynone was realized via an addition‐elimination process of iodine ion to generate the ortho‐phenanthrenequinone methide (o‐PQM), which could be trapped by styrene to form benzo[f,h]chromenes through hetero‐Diels‐Alder reaction. While IPrAuCl/AgSbF6
已开发出可转换的催化方法用于炔酮的区域选择性分子内氢芳基化。当ZnI 2用作催化剂时,通过碘离子加成消除过程生成邻菲菲醌(o ‐PQM),从而使炔酮的α-芳基化形成芳基,芳烃可被苯乙烯捕获从而形成苯并[ f]。中,h ]通过色烯杂-Diels-Alder反应。尽管应用了IPrAuCl / AgSbF 6,但发生了乙炔基的β芳基化反应,以中等至极好的收率得到了苯并环庚烯5一。