Modified and Scalable Synthesis of <i>N</i>-Tosyl-4-Chlorobenzenesulfonimidoyl Fluoride (SulfoxFluor): Direct Imidation of Sulfinyl Chlorides with Chloramine-T Trihydrate
作者:Renxiang Liu、Xiao-Cong Zhou、Xin-Yi He、Yuan-Qiang Li、Weiqin Zheng、Xiu Wang、Junkai Guo、Chuanfa Ni、Jinbo Hu
DOI:10.1021/acs.oprd.1c00431
日期:2022.2.18
lfonimidoyl fluoride (SulfoxFluor) has emerged as a new fluorination reagent that can be used in the rapid deoxyfluorination of various alcohols. We disclose in this article a general and practical method for the preparation of SulfoxFluor and its adaption to a large scale. Starting from readily available 4-chlorobenzenesulfonyl chloride, chloramine-T trihydrate, and potassium fluoride, SulfoxFluor
Rapid Deoxyfluorination of Alcohols with
<i>N</i>
‐Tosyl‐4‐chlorobenzenesulfonimidoyl Fluoride (SulfoxFluor) at Room Temperature
作者:Junkai Guo、Cuiwen Kuang、Jian Rong、Lingchun Li、Chuanfa Ni、Jinbo Hu
DOI:10.1002/chem.201901176
日期:2019.5.28
2‐pyridinesulfonyl fluoride (PyFluor) in fluorination rate, and is also superior to perfluorobutanesulfonyl fluoride (PBSF) in fluorine‐economy. Its reaction with alcohols not only tolerates a wide range of functionalities including the more sterically hindered alcoholic hydroxyl groups, but also exhibits high fluorination/elimination selectivity. Because SulfoxFluor can be easily preparedfrom inexpensive
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)。