PROCESS FOR THE PREPARATION OF .alpha.- AMINOALKYLPHOSPHONIC AND OF .alpha.-AMINOALKYLPHOSPHINIC ACIDS
CA 1261347 A · Owner: Hoechst Aktiengesellschaft · Inventors: Bartels, Gunter
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Abstract:, .alpha. -Aminoalkylphosphonic and .alpha.-aminoalkylphosphinic acids of the formula I, (I), uhere n = 1 or 0 R1 = H, CH3 or CH2-C6H5, R2 = H (for n = 1) and also = alkyl or phenyl (for n = O), are prepared by Hofmann degradation from compounds of the formula II, (II), where n and R1 have the same meaning as in formula I R3 = alkyl (for n = 1), alkyl or phenyl (for n = 0) and, Mp+ = p-valent cation, with subsequent working up in the known manner. Some of the compounds I are biologically active and some, are intermediates for the preparation of biologically active compounds.
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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 September 26, 1989. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended September 26, 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.