Fluoronated heterocyclic compounds: Selective chlorine/fluorine exchange reactions on pyridazines
作者:E. Klauke、L. Oehlmann、B. Baasner
DOI:10.1016/s0022-1139(00)81214-2
日期:1983.10
of the three possible difluorinated pyridazines and the two possible trifluorinated pyridazines. The hydrogen fluoride reaction is an equilibrium reaction in which the substitution of the first chlorine for fluorine also occurs exclusively in the 3-position. Double chlorine/fluorine substitution only gives 3,6-difluoro-4,5-dichloropyridazine, triple substitution only producing 3,4,6-trifluoro-5-chloropyridazine