Trifluoromethanesulfonates and a process for their preparation
CA 1267903 C · Owner: Urbach, Hansjorg · Inventors: Urbach, Hansjorg; Henning, Rainer
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
The invention relates to trifluoromethanesulfonates of the formulae II and III, (II) (III), in which, n = 2, R represents (C1 to C6-alkyl (C2 to C6)-alkenyl, (C3 to C9)-cycloalkyl (C2-C5)-acylamino-(C1-, C4)-alkyl, (C7-C13)-aroylamino-(C1-C4)-alkyl (C1-C4)-alkoxycarbonylamino-(C1-C4)-alkyl (C6-, C12)-aryl-(C1-C4)-alkoxycarbonylamino-(C1-C4)alkyl, (C6 to C12)-aryl which can be monosubstituted dissubstrituted or trisubstituted by one or more of (C1-C4)-alkyl (C1 to C4)-alkoxyhydroxy, halogen, nitro amino, (C1 to C4)-alkylamino, di-(C1 to C4)-alkylamino and methylenedioxy, or 3-indolyl, R1 represents hydrogen or (C2 to C6)-alkyl which can, be optionally substituted by amino (C1 to C6)-acyl-, …
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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 17, 1990. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended April 17, 2007.
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Everything on this page comes from the CIPO record linked above. Contains information licensed under the Open Government Licence – Canada.