Enantioselective Cu-Catalyzed Nucleophilic Addition of Fluorinated Reagents: C–C Bond Formation for the Synthesis of Chiral Vicinal Difluorides
作者:Huaxin Lin、Wei Jiao、Zhiwei Chen、Jian Han、Dongmei Fang、Min Wang、Jian Liao
DOI:10.1021/acs.orglett.2c00518
日期:2022.3.25
Cu/sulfoxide phosphine (SOP) complex catalyzed nucleophilic addition of fluorinated enolates to gem-difluoroalkenes. The enantioenriched vicinal difluorides, containing a chiral tertiary fluoride and a fluoroalkene, were successfully afforded via C–C bond formation in good yields (up to 94% yield), high Z/E-selectivity (5:1 → 50:1 for Z-isomer), and excellent enantioselectivities (up to 98.5:1.5 er). Utility
在这里,我们描述了第一个对映选择性 Cu/亚砜膦 (SOP) 配合物催化氟化烯醇化物与偕二氟烯烃的亲核加成。含有手性叔氟化物和氟代烯烃的对映体富集的连二氟化物通过 C-C 键的形成成功地提供了良好的产率(高达 94% 的产率),高Z / E选择性(5:1 → 50:1 for Z -异构体)和出色的对映选择性(高达 98.5:1.5 er)。通过对复杂的生物活性化合物的修饰证明了这种方法的实用性。