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 nucleophilic addition 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
芳基硫醇与容易获得的β,β-二氟苯乙烯的亲核加成反应提供α,α-二氟烷基硫醚。反应通过不稳定的阴离子中间体进行,易于消除氟化物并生成α-氟乙烯基硫醚。然而,碱催化的使用克服了容易的β-氟化物消除,以优异的产率和选择性产生α,α-二氟烷基硫醚。