1-hydroxy-1-(substituted)aryl carboximidates
CA 1164884 A · Owner: Pfizer Inc. · Inventors: Schnur, Rodney C.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Disclosed are 1-hydroxy-1-(substituted)aryl carboximidates of the formula:, (XXII), wherein, R2 is (C1-C3)alkyl; and R7 is , or, ;, in which, V is fluoro;, V1 is benzyloxy chloro, phenoxy, nitro or trifluoromethyl; V is benzyloxy, phenoxy, nitro or trifluoromethyl; V3 is methyl, (C1-C2)alkoxy, methylthio chloro, or fluoro;, V4 and V5 are each independently hydrogen methyl, bromo, chloro, fluoro, cyano, nitro or trifluoromethyl; with the proviso that when V3 is methoxy or chloro, at least one of V4 or V5 is other than hydrogen;, Y is hydrogen methyl, benzyloxy, (C1-C2)alkoxy, chloro bromo or, fluoro;, Y is hydrogen or methoxy; and Y2 is fluoro or chloro, useful as an intermediate for …
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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 3, 1984. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended April 3, 2001.
- 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
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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.