Process for the preparation of aryl-piperidine carbinols
CA 1310649 C · Owner: Beecham Group P.L.C. · Inventors: Martin, Roger Thomas; Faruk, Erol Ali
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A process is disclosed for the preparation of a compound of formula (I):, (I), wherein Ar is aryl or substituted aryl and R3 is hydrogen, alkyl or aralkyl, which process comprises reducing a compound of formula (II):, (II) wherein Ar and R3 are as defined with respect to formula (I) and R4 is alkyl. Compounds of formula (I) are useful as chemical intermediates.
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 November 24, 1992. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended November 24, 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.