Basically substituted 3,4-dihydro-2h-isoquinolin-1-thiones and process for preparing them
CA 1055027 A · Owner: Hoechst Aktiengesellschaft · Inventors: Kunstmann, Rudolf; Kaiser, Joachim
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
this invention relates to 3,4-aihydro-2H-isoquinolinel-ones of the formula, (X), wherein X1 represents hydrogen a saturated or unsaturated, sraight-chained or branched alkyl radical having 1 to 6 carbon atoms or the phenyl radical, R2 represents a dialkylaminoalkyl radical of the formula, wherein A represents a straight-chained or branched low molecular alkylene group and R5 and R6 are identical or different and represent straight-chained or branched low molecular alkyl, radicals and may form together with the nitrogen atom a 5- 6-, or 7-membered ring, wherein one of the hydrocarbons is substituted by a hetero atom which may be substituted with hydrogen C1-C4 -, alkyl or the phenyl radical, …
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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 May 22, 1979. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended May 22, 1996.
- 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
Timeline From CIPO dates
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.