N,n'-bis-substituted imidazolin-2-thiones and method of...

Details N,n'-bis-substituted imidazolin-2-thiones and method of... N,n'-bis-substituted imidazolin-2-thiones and method of...

C - Chemistry, Metallurgy

07

D

260/277.3

C07D 401/00 (2006.01) C07D 401/06 (2006.01) C07D 215/12 (2006.01) C07D 233/42 (2006.01)

Patent

CA 1083157

N,N'-BIS-SUBSTITUTED IMIDAZOLIN-2-THIONES AND METHOD OF PREPARING SAME ABSTRACT OF THE DISCLOSURE The present invention relates to novel derivatives of imidazolin-2-thione and a method of preparing same. These no vel compounds comprise N,N'-bis-substituted imidazoiin-2-thi ones of the formula: Image (I) wherein R1 is Image (II) R2 is hydrogen or methyl. The method of preparing said compounds according to the present invention comprise reacting imidazolin-2-thione with formaldehyde and a compound of the formula: Image (III) wherein R2 is hydrogen or methyl, at the molar ratio therebetween of 1:2:2 respectively in an aqueous medium or in a medium of polar organic solvents at a temperature ranging from 20 to 80°C. The method according to the invention makes it possible to obtain the desired produce at a high yield (up to 93% of the theoretical value). Said products may be widely employed in rubber industry as effici- ent accelerators of vulcanization of rubber mixes (vulcaniza- tion time is 10-15 minutes), as corrosion inhibitors for non- ferrous metals, as flotation reagents for extraction of non- ferrous metals from waste waters and as herbicides and insec- ticides in agriculture. - 2 -

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