Divergent Generation of the Difluoroalkyl Radical and Difluorocarbene via Selective Cleavage of C–S Bonds of the Sulfox-CF<sub>2</sub>SO<sub>2</sub>Ph Reagent
作者:Shali Li、Xiu Wang、Yide Yang、Chuanfa Ni、Jinbo Hu
DOI:10.1021/acs.orglett.3c04116
日期:2024.2.2
A new difluoroalkylation reagent Sulfox-CF2SO2Ph bearing both sulfoximine and sulfone moieties was prepared from commercially available SulfoxFluor and PhSO2CF2H. On one hand, the Sulfox-CF2SO2Ph reagent could act as a (phenylsulfonyl)difluoromethyl radical source under photoredox catalysis, in which the arylsulfoximidoyl group is selectively removed. On the other hand, under basic conditions, Sulfox-CF2SO2Ph
由市售SulfoxFluor和PhSO 2 CF 2 H制备了一种新型二氟烷基化试剂Sulfox-CF 2 SO 2 Ph,该试剂同时具有亚砜亚胺和砜部分。一方面,Sulfox-CF 2 SO 2 Ph试剂可以充当(苯磺酰基)光氧化还原催化下的二氟甲基自由基源,其中芳基亚磺酰亚胺酰基被选择性去除。另一方面,在碱性条件下,Sulfox-CF 2 SO 2 Ph可以作为二氟卡宾前体,分别与S-和O-亲核试剂进行S-和O-二氟甲基化,其中Sulfox-CF 2 SO中的苯磺酰基2 Ph 被选择性去除(随后芳基亚磺酰亚胺酰基的 α-消除)。