Substituted nitrobenzophenone derivatives and a process for the preparation thereof
CA 1058172 A · Owner: Richter Gedeon Vegyeszeti Gyar Rt · Inventors: Gorog, Sandoe; Szporny, Laszlo; Palosi, Eva
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A process is provided for preparing compounds of the general formula (I), (I), wherein R1 and R2 when taken separately, stand for saturated alkyl containing 1 to 8 carbon atoms; phenalkyl wherein the alkyl groups contains 1 to 4 carbon atoms; cyclohexyl; or phenyl; and R1 and R2 together with the adjacent nitrogen atoms stand for: piperidino, pyrrolidino; heptamethyleneimino; morpholino; or N-methylpiperazino; but if R1 stands for methyl then R2 may only stand, for a group other than methyl. The process involves reacting a compound of the general formula (II) (II), wherein X stands for halogen, with a secondary amine of the general formula (III), R1 - NH- R2 (III), wherein R1 and R2 each …
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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 July 10, 1979. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended July 10, 1996.
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Official CIPO records
Everything on this page comes from the CIPO record linked above. Contains information licensed under the Open Government Licence – Canada.