METHOD FOR PREPARING FLUORO-CONTAINING HETEROCYCLIC COMPOUNDS Russian patent published in 2003 - IPC

FIELD: organofluoric chemistry, chemical technology. SUBSTANCE: method is realized by the initial preparing a mixture of the parent reagents from halogen-containing heterocyclic compound comprising from one to three nitrogen atoms and one or more halogen atoms excepting for fluorine atom and alkaline metal fluoride is used as the source of fluorine atom and a catalyst also. Salt of N,N',N''-hexasubstituted guanidinium is used as a catalyst. Mixture is heated in autoclave up to reaction of halide exchange (100- 250 C) and kept at this temperature with simultaneous control of pressure in autoclave up to ceasing its rise. Then the required fluorocontaining heterocyclic compound is isolated from reaction mass formed in autoclave. EFFECT: improved preparing method, reduced cost of end product preparing. 4 cl, 3 ex