Metal-catalyzed arylations and vinylations of hydrazines, hydrazones, hydroxylamines and oximes
CA 2322194 C · Owner: Buchwald, Stephen L. · Inventors: Buchwald, Stephen L.; Geis, Oliver; Wagaw, Seble
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A method is provided for the transition metal-catalyzed arylation or , vinylation, of hydrazines, hydrazones and the like. Additionally, the , invention provides a conceptually novel strategy the cornerstone of which is , the transition metal-catalyzed arylation or vinylation method for the , synthesis of indoles, carbazoles and the like. The methods and strategies of the invention may be utilized in standard parallel, and combinatorial , synthetic protocols.
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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
- Filed February 26, 1999 and granted April 26, 2011. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended February 26, 2019.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by February 26, 2021.
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Everything on this page comes from the CIPO record linked above. Contains information licensed under the Open Government Licence – Canada.