Process for the preparation of 2-aryl-5-(perfluoro-alkyl) pyrrole compounds from n-1-chloro-1-(perfluoroalkyl) methyl arylimidoyl chloride compounds
CA 2300412 A1 · Owner: Basf Aktiengesellschaft · Inventors: Kameswaran, Venkataraman
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
There is provided a process for the preparation of 2-aryl-5-(perfluoroalkyl)pyrrole compounds from N-1-chloro-1-(perfluoroalkyl)methylarylimidoyl chloride compounds. The 2-aryl-5-(perfluoroalkyl)pyrrole compounds are useful for the control of insect and acarid pests, and may also be used to prepare other pesticidal arylpyrrole compounds. In addition, the present invention provides compounds which are useful as intermediates in the preparation of arylpyrrole 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
- Filed March 7, 2000. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended March 7, 2020.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by March 7, 2022.
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Timeline
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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.