METHOD OF PRODUCING PERFLUOROALKYNE COMPOUND Russian patent published in 2011 - IPC C07C17/23 C07C21/22 

FIELD: chemistry.

SUBSTANCE: invention relates to a method of producing a perfluoroalkyne compound comprising a step for adding Cl₂, Br₂ or l₂ to a compound of formula (1) CH₃C≡CR¹ to obtain a compound of formula (2) CH₃CX₂CX₂R¹, a step for fluorinating the compound of formula (2) with fluorine gas to obtain a compound of formula (3) CF₃CX₂CX₂R², and a dehalogenation step - reaction of the compound of formula (3) with a metal or organometallic compound to obtain a perfluoroalkyne compound of formula (4) CF₃C≡CR². In the formulae given above, R¹ is a methyl or ethyl group, X is O, Br or I, and R² is a trifluoromethyl group or a pentafluoroethyl group.

EFFECT: high efficiency and high output of the end product using starting materials which are ecologically clean and industrially accessible.

3 cl, 1 ex