Process for producing phosphinylamino acid derivatives
CA 1299580 C · Owner: Nissan Chemical Industries, Ltd. · Inventors: Suzuki, Fumio; Takamatsu, Hideki; Takigawa, Shinichiro
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A process for producing a phosphinylamino acid derivative of the formula:, (I), wherein R1 is a lower alkyl group R2 is a hydrogen atom, a lower alkyl group a halo-lower alkyl group or a, substituted or unsubstituted phenyl group and R3 is a, substituted or unsubstituted alkyl group or a substituted or unsubstituted phenyl group, which comprises reacting a compound of the formula:, (II), wherin R1 and R2 are as defined above and/or a compound, of the formula:, (III) wherein R1 and R2 are as defined above with a compound of, the formula:, R3CONH2 (IV) wherein R3 is as defined above, carbon monoxide and hydrogen in the presence of a catalyst containing a metal of Group VIII of the Periodic …
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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 April 28, 1992. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended April 28, 2009.
- 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.