Chirally substituted 2-imidazolin-5-ones
CA 1100974 A · Owner: Basf Aktiengesellschaft · Inventors: Boell, Walter; Koenig, Horst; May, Hans-Joachim
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
The present invention relates to chirally substituted 2-imidazolin-5-ones of the general formula I : (I), where R1 is L-.alpha.-phenylethyl (+)-3-pinyl-methyl, (-)-no-, pinyl, or L-.alpha.-carbo-tert.-butoxy-ethyl R2 is hydrogen, methyl, benzyl or phenyl R3 and R4 are different from one, another and R3 is alkyl of 1 to 4 carbon atoms alkyl of 1 to, 4 carbon atoms substituted by methoxy methylthio, dimethyl-, amino, cyano and carbethoxy benzyl or benzyl which is mono-, or disubstituted by alkoxy containing 1 to 4 carbon atoms acyloxy and monosubstituted by chloro, bromo nitro or methyl-, enedioxy, or phenyl, and R4 is alkyl of 1 to 4 carbon atoms alkyl of 1 to 4 carbon atoms substituted by …
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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 May 12, 1981. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended May 12, 1998.
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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.