Difluoromethylation of the activated X–H bond (X = N, O and S) and aliphatic thiols, and gem-difluorocyclopropenation of alkynes with difluorocarbene generated in situ from difluoromethylene phosphobetaine (Ph3P+CF2CO2−) by decarboxylation occurred smoothly without the presence of any base or other additives.
X. Deng, J. Lin, J. Zheng and J. Xiao, Chem. Commun., 2015, 51, 8805 DOI: 10.1039/C5CC02736E
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