Oxidative Trifluoromethylthiolation of Terminal Alkynes with AgSCF<sub>3</sub>: A Convenient Approach to Alkynyl Trifluoromethyl Sulfides
作者:Sheng-Qing Zhu、Xiu-Hua Xu、Feng-Ling Qing
DOI:10.1002/ejoc.201402533
日期:2014.7
new method for the efficient synthesis of alkynyl trifluoromethyl sulfides was developed. By combining AgSCF3 and NCS in N,N-dimethylacetamide, an electrophilic active intermediate was produced, which was then treated with a variety of terminalalkynes to afford the corresponding trifluoromethanesulfenylated products in moderate to excellent yields.
Direct trifluoromethylthiolation of terminal alkynes mediated by a hypervalent trifluoromethylthio-iodine(iii) reagent; boosting effect of fluorinated alcohol
The direct trifluoromethylthiolation of terminalalkynes is an important strategy for accessing CF3S-containing compounds. Herein, we report a direct trifluoromethylthiolation reaction of various terminalalkynes employing a new hypervalent trifluoromethylthio-iodine(III) reagent TFTI in a fluorinated alcohol, either 1,1,1,3,3,3-hexafluoro-2-propanol (HFIP) or perfluoro-tert-butanol (PFTB). The reaction