METHOD OF OBTAINING 5-(HET)ARYL-4-(2-THIENYL)-2-(THIO)MORPHOLYLPYRIMIDINE Russian patent published in 2015 - IPC C07D409/14 C07D413/14 C07D417/14 

FIELD: chemistry.

SUBSTANCE: invention relates to a method of obtaining 5-(het)aryl-4-(2-thienyl)-2-(thio)morpholylpyrimidine, represented by the general formula : where X=O or S, Ar=3-nitrophenyl or 2-thienyl. The described method consists in the fact that at the first stage 5-brom-4-(2-thienyl)-2-(thio)morpholylpyrimidine is obtained by interaction with the excess of 2-thienyllithium in the absolute ether at first at a temperature from -20 to -25°C for not less than 1 hour, and then at room temperature for not less than 18 hours, a solution of a mixture of potassium hexacyonoferrate (III) and potassium hydroxide in water are added with further mixing for 4 hours at room temperature, the ether phase is separated and distilled and the obtained remaining part is subjected to chromatographic separation on silica gel with the ratio in the eluent ethylacetate-hexane, 1:3, with (het)arylboric acid and tetrakis(triphenyphosphine)palladium(0) in tetrahydrofurane, a water solution of potassium carbonate is added and the obtained mixture is irradiated by microwave radiation at 155°C for 20 minutes, the solvent is distilled under a reduced pressure, the obtained residual is subjected to chromatographic separation on silica gel with the ratio in the eluent ethylacetate - hexane, 1:2 with obtaining the target product.

EFFECT: claimed is the highly-efficient two-stage method of obtaining 5-(het)aryl-4-(2-thienyl)-2-(thio)morpholylpyrimidines, which can have a wide spectrum of biological activity.

4 ex