Abstract

The structure of the addition reaction product of 2-benzoxypentafluoropropene [CF 2 = C(CF 3)OCOC 6H 5] with 1,4-dioxane was investigated by the crystallographic analysis of the single crystal to conclude that the 2,6-disubstitution of 1,4-dioxane took place, on the contrary to the assumption that the reaction would take place at the 2- and 5-positions based on the product structure of 2-benzoxypentafluoropropene with tetrahydrofuran. Modified polyaddition reaction mechanism of bis(α–trifluoromethyl–β,β–difluorovinyl) terephthalate [CF 2 = C(CF 3)OCO–C 6H 4–COOC(CF 3) = CF 2] with 1,4-dioxane including 1,5-radical shift mechanism is proposed.

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