Base Catalysis Enables Access to α,α-Difluoroalkylthioethers
作者:Douglas L. Orsi、Brandon J. Easley、Ashley M. Lick、Ryan A. Altman
DOI:10.1021/acs.orglett.7b00386
日期:2017.4.7
A nucleophilicaddition reaction of aryl thiols to readily available β,β-difluorostyrenes provides α,α-difluoroalkylthioethers. The reaction proceeds through an unstable anionic intermediate, prone to eliminate fluoride and generate α-fluorovinylthioethers. However, the use of base catalysis overcomes the facile β-fluoride elimination, generating α,α-difluoroalkylthioethers in excellent yields and