FIELD: chemistry.
SUBSTANCE: present invention relates to a method of producing antipyrenes of general formula (I) 
R = Et, Pr, C6H13, CH2Ph, Ph, 2-CH3OC6H4. The method involves reacting 3,3,5-trimethyl-2-chloro-1,2-oxaphospholene-2-oxide 
with an organomagnesium compound (Grignard reagent) RMgX (X = Br, I) in a medium of organic solvent in molar ratio 1 : (2.0-2.6) while stirring for 0.5 to 2 hours, hydrolysis of the reaction mass with an aqueous solution of hydrochloric acid, separation of the organic phase and extraction of desired compounds from the organic phase using known methods.
EFFECT: design of a new method of producing antipyrenes.
2 cl, 8 ex, 1 tbl
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