| 摘要 |
FIELD: chemistry. ^ SUBSTANCE: invention relates to chemistry, specifically to an improved method of producing 4,4'-(m-phenylene-dioxy)diphthalonitrile (tetranitrile P) of formula I, which can be used as a monomer in synthesis of polyhexazocylanes and polyphthalocyanines, as well as a semi-product in synthesis of polyether imides. The method involves, for example, reaction of 4-nitrophthalonitrile and resorcinol in the medium of an aprotic dipolar solvent in the presence of a base at 80-90C in 1 hour. The starting compounds - 4-nitrophthalonitrile and resorcinol - are dissolved in N,N-dimethylacetamide and a solution of sesquihydrate potassium carbonate K2CO31.5H2O in water is added to the obtained solution. The residue of the end tetranitrile P I separated from the reaction mass is then washed on a filter with an aliphatic alcohol selected from a group comprising methanol or ethanol or 2-propanol. ^ EFFECT: method enables to obtain tetranitrile P of higher purity with high output. ^ 2 ex |
