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Expired Canadian patentCanada

AMINOMETHYLTRIORGANOTIN COMPOUNDS, .alpha.-MONO OR DISUBSTITUTED, AND METHOD OF PREPARATION

CA 1252104 A · Owner: Centre Nationale De La Recherche Scientifique · Inventors: Pereyre, Michel; Elissondo, Bernard; Quintard, Jean-Paul

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Abstract From the Canadian patent

The invention concerns a method of preparation of aminomethyltriorganotin compounds, preferably .alpha.-mono or disubstituted, the new tin compounds obtained thereby and an application of said tin compounds to the synthesis of aminomethylorganometallic compounds and to the regiospecific preparation of .beta.-aminoalcohols. The intermediate tin and metallic compounds are new. The method for preparing the tin compounds comprises reacting an iminium salt with a corresponding stannylanion, preferably a triorganostannylanion. This method provides best yields and provides regiospecific .beta.-aminoalcohols useful by having in most cases a large spectrum of pharmacological activities.

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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 4, 1989. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended April 4, 2006.
  • We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
FiledJune 22, 1984
GrantedApril 4, 1989
Term endedApril 4, 2006
Patent numberCA 1252104 A
Classification (IPC)C07F7/22

Timeline

Timeline From CIPO dates

19851988199119941997200020032006Application filedJune 22, 1984Patent grantedApril 4, 1989Term endedApril 4, 2006

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Everything on this page comes from the CIPO record linked above. Contains information licensed under the Open Government Licence – Canada.