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
General Co-catalytic Hydrothiolation of <i>gem</i>-Difluoroalkenes
作者:Jacob P. Sorrentino、Ryan M. Herrick、Mohammed K. Abd El-Gaber、Ahmed Z. Abdelazem、Ankit Kumar、Ryan A. Altman
DOI:10.1021/acs.joc.2c02343
日期:2022.12.16
convergent late-stage access to fluorinated functional groups, though most functionalization reactions proceed through defluorinative functionalization processes that deliver mono-fluorovinyl products. In contrast, fewer reactions undergo net hydrofunctionalization to generate difluorinated products. Herein, we report a photocatalytic hydrothiolation of gem-difluoroalkenes that enables access to a broad spectrum