N-NITRO-5-AZIDOMETHYLOXAZOLIDINE-1,3 SYNTHESIS METHOD Russian patent published in 2010 - IPC C07D263/04 

FIELD: chemistry.

SUBSTANCE: invention relates to a method for synthesis of N-nitro-5-azido-methyloxazolidine-1,3 which can be used as an energetic plasticiser for polymers. The starting compounds used are potassium sulphamate and epichlorohydrin. The reaction for bonding potassium sulphamate to epichlorohydrin takes place at 50…53°C and holding time of 50…55 hours with threefold excess of potassium sulphamate. Without extraction, the formed N-(3-chloro-2-hydroxypropyl)-potassium sulphamate is condensed in form of a water-alcohol solution with formaldehyde and the water-alcohol solution of N-(5-chloro-methyloxazolidine1,3)-potassium sulphamate obtained after evaporation is suspended in acetic anhydride without extraction from the reactor and nitrated with nitric acid at 10…25°C. The formed N-nitro-5-chloromethyl-oxazolidine-1,3 is extracted with organochlorine solvents, purified by treating with aqueous sodium hydroxide solution at 70…75°C and undergoes azidation with sodium azide in dimethyl formamide medium in the presence of activated carbon at 100°C.

EFFECT: improved method.

1 cl, 5 ex