Youlia Hagooly et al.
The Journal of organic chemistry, 73(17), 6780-6783 (2008-08-13)
A general preparation for aromatic and aliphatic, cyclic as well as linear, symmetric and asymmetric difluoromethylenedioxy derivatives is described. The alcohols were reacted with thiophosgene to give thiocarbonates, which in turn were reacted with BrF3. The fluorination step is complete