N,n'-bis-substituted imidazolin-2-thiones and method of preparing same
CA 1083157 A · Owner: Tashkentsky Politekhnichesky Institut Imeni Abu Raikhana Beruni · Inventors: Kadyrov, Abduvasit; Safaev, Abidzhan; Faiziev, Tulyagan F.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
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:, (I), wherein R1 is (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: (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 …
Read the whole patent
Listed from its CIPO record in Patent Yard's archive of Canadian patents past their term. Its claims, description and drawings are in the CIPO record and on Google Patents, and the Claude kit works from them.
Why it's free to use
- Granted August 5, 1980. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended August 5, 1997.
- We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
Timeline
Timeline From CIPO dates
Sources & verification
Official CIPO records
Everything on this page comes from the CIPO record linked above. Contains information licensed under the Open Government Licence – Canada.