METHOD FOR PREPARING CYCLOCARBOTHIALDEHYDES

FIELD: organic chemistry, chemical technology. SUBSTANCE: invention relates to a single-stage method for preparing new chemical compounds cyclocarbothialdehydes of the general formula: wherein represents , wherein R1 = R2 mean hydrogen atom; or R1 means hydrogen atom; R2 means methyl; or R1 means fluorine atom; R2 means hydrogen atom. Compounds are prepared by interaction of 2-imidazolidinethione with dichloro-derivative of uracil taken among the group including 1,3-bis-(2-hydroxy-3-chloropropyl)uracil, 1,3-bis-(2- -hydroxy-3-chloropropyl)- 6-methyluracil, 1,3-bis-(2-hydroxy-3-chloropropyl)-5-fluorouracil or with 2,2-dichlorodicyclohexylsulfide in the presence of potash and catalyst of interphase reactions, in methanol or dimethylsulfoxide medium, at temperature 65-80 C and in the following ratio of reagents: 2-imidazolidinethione : dichloro-derivative of uracil or 2,2-dichlorodicyclohexylsulfide : potash : catalyst of interphase reactions = 1:1:2:(0.1-012), respectively. Invention provides preparing cyclocarbothialdehydes with high yield that can be used as extractants of noble metals. EFFECT: improved preparing method. 2 cl, 4 ex