FIELD: chemistry.
SUBSTANCE: invention relates to a method of producing dihydrate of 1,1,1,5,5,5-hexafluoroacetylacetone, which is an initial compound in producing low-boiling metal chelates used to separate isotopes, in manufacturing electric boards, polyfluorinated heterocyclic compounds: pyrazoles, isoxazoles, pyrimidines etc. The method involves acylation of diethyl malonate with trifluoroacetic anhydride in the presence of catalytic amounts of magnesium metal in an autoclave at 125±5°C for 15 hours, distillation of the reaction mass, dehydration and extraction of the end product.
EFFECT: method has less wastes and enables to obtain a highly-pure end product.
1 tbl, 1 ex
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