Iron-Promoted Difunctionalization of Alkenes by Phenylselenylation/1,2-Aryl Migration
作者:Ping Wu、Kaikai Wu、Liandi Wang、Zhengkun Yu
DOI:10.1021/acs.orglett.7b02751
日期:2017.10.6
Iron-promoted difunctionalization of α,α-diaryl and α-aryl-α-alkyl allylic alcohols has been efficiently achieved by means of N-(phenylseleno)phthalimide (N-PSP) under mild conditions. An in situ generated phenylselenium cation (PhSe+) was added to the olefinic C═C bond to initiate the regioselective phenylselenylation with concomitant 1,2-aryl migration, following a migration preference contrary to
铁,α,α-二芳基和α-芳基-α-烷基烯丙基醇的双官能化已在温和的条件下通过N-(苯基硒代)邻苯二甲酰亚胺(N-PSP)有效地实现了。将原位生成的苯基硒阳离子(PhSe +)添加到烯烃的C═C键上,以一种与众所周知的自由基途径相反的迁移偏好,伴随着1,2-芳基迁移,引发区域选择性的苯基硒基化反应。所得到的烯烃双官能化产物,即α-芳基-β-苯基硒烯酮的氢解,以及随后的铜催化的脱氢硒烯化有效地提供了官能化的2-吡唑啉衍生物。