Synthesis and Mechanism of Formation of 5-Benzylidene-2-thioxo-2,3-dihydro-(1H,5H)-pyrimidine- 4,6-diones Difluoromethoxy Derivatives

摘要

Reactions of 5-benzylidene-24hioxo-2,3-dihydro-(1H,5H)-pyrimidine-4,6-diones with a singlet difluorocarbene afford difluoromethoxy derivatives in 20-34% yield. The quantum-chemical analysis of the reaction mechanism showed that N,N -dimethylformamide is involved into the formation of difluoromethoxy derivatives.