Process for the preparation of unsaturated ketones
CA 1301192 C · Owner: Drent, Eit · Inventors: Drent, Eit
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Process for the preparation of compounds of the general formula:, R-C?C-C(O)-C(R)?CH2 (I), R representing an H atom or an optionally substituted hydrocarbyl group, by reacting a compound R-C=CH with CO in the presence of a Pd(II) compound, an organic phosphine and a protonic acid having a PKa below 3Ø Compounds of formula I in which R represents an optionally substituted hydrocarbyl group are novel. Acetylenically and ethylenically unsaturated ketones may be used as starting materials for the preparation of jasmone-type compounds and of polymers.
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 May 19, 1992. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended May 19, 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.