介绍了由相应的(杂)芳基硼酸双催化合成磺酰氟。我们证明了带有双芳基砜配体骨架的有机铋(III)催化剂在催化循环中通过不同的规范有机金属步骤旋转,而不会改变氧化态。所有步骤都已经过验证,包括将 SO 2催化插入Bi-C 键,从而形成结构独特的 O 键亚磺酸铋复合物。该催化方案为各种芳基和杂芳基硼酸提供了出色的收率,显示出广泛的官能团耐受性。
One-pot palladium-catalyzed synthesis of sulfonyl fluorides from aryl bromides
作者:Alyn T. Davies、John M. Curto、Scott W. Bagley、Michael C. Willis
DOI:10.1039/c6sc03924c
日期:——
A mild, efficientsynthesis of sulfonyl fluorides fromaryl and heteroaryl bromides utilizing palladium catalysis is described. The process involves the initial palladium-catalyzed sulfonylation of arylbromides using DABSO as an SO2 source, followed by in situ treatment of the resultant sulfinate with the electrophilic fluorine source NFSI. This sequence represents the first general method for the