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Expired Canadian patentCanada

Process of hydroboronizing alkenes and alkines

CA 1285578 C · Owner: Noth, Heinrich · Inventors: Mannig, Detlef; Noth, Heinrich

CIPO record

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Abstract From the Canadian patent

A process of hydroboronizing alkenes or alkines with catecholborane (1,3,2-benzodioxaborolane) optionally in the presence of an organic solvent, characterized in that the reaction is catalyzed by a complex compound selected from the group consisting of, (I) RhCl(CO)x E(C6H5)3 3-x' wherein ''E'' is arsenic or phosphorus and ''x'' is equal to 0 or 1, (II) RhCl(alkene)22, (III) (C6H5)3P3Ru(CO)ClH and, (IV) (C6H5)3P3RuCl2. Particularly suitable catalysts are, e.g. tris(triphenylphosphine)rhodium(I) chloride and bis(cyclooctadiene)-rhodium(I) chloride. The advantage afforded by the process according to the invention is that alkenes and alkines, which are highly volatile and thermally unstable, …

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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 July 2, 1991. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended July 2, 2008.
  • We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
FiledAugust 6, 1986
GrantedJuly 2, 1991
Term endedJuly 2, 2008
Patent numberCA 1285578 C
Classification (IPC)C07F5/02

Timeline

Timeline From CIPO dates

19871990199319961999200220052008Application filedAug 6, 1986Patent grantedJuly 2, 1991Term endedJuly 2, 2008

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