Sulfonamide Synthesis via Calcium Triflimide Activation of Sulfonyl Fluorides
作者:Paramita Mukherjee、Cristian P. Woroch、Leah Cleary、Mark Rusznak、Ryan W. Franzese、Matthew R. Reese、Joseph W. Tucker、John M. Humphrey、Sarah M. Etuk、Sabrina C. Kwan、Christopher W. am Ende、Nicholas D. Ball
DOI:10.1021/acs.orglett.8b01520
日期:2018.7.6
A method using calcium triflimide [Ca(NTf2)2] as a Lewis acid to activate sulfonylfluorides toward nucleophilic addition with amines is described. The reaction converts a wide array of sterically and electronically diverse sulfonylfluorides and amines into the corresponding sulfonamides in good yield.
A one-potthree-componentreaction involving nitroarenes, (hetero)arylboronic acids, and potassium pyrosulfite leading to sulfonamides was described. A broad range of sulfonamides bearing different reactive functional groups were obtained in good to excellent yields through sequential C-S and S-N coupling that does not require metal catalysts.