Process for the synthesis of 5-(substituted)-amino-8- phenyl or substituted-phenyl-3h, 6h-1, 4, 5a, 8a-tetraazaacenaphthylen-3-ones
CA 2092357 A1 · Owner: Cain, William T. · Inventors: Cutting, Ian; Cain, William T.; Blum, David M.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
31,808-00, AN IMPROVED PROCESS FOR THE SYNTHESIS OF 5-(SUBSTITUTED)AMINO-8-PHENYL OR, SUBSTITUTED-PHENYL-3H,6H-1,4,5a,8a- TETRAAZAACENAPHTHYLEN-3-ONES, ABSTRACT A novel process for producing 5-, (substituted)amino-8-phenyl or substitutedphenyl-3H,6H-1,4,5a,8a-tetraazaace-napthylen-3ones of the formula:, Where R1, R2 and R3 are defined in the specification by reacting a 4,5-dihydro-7-phenyl or substituted phenylpyrazolo1,5-apyrimidine-3-carboxaminde with carbon disulfide and a suitable base and a lower alkyl iodide to give a 5-(lower alkylthio)-8-phenyl or substituted phenyl-3H,6H-1,4,5a,8a-tetraazaacenphthylen-3-one which is further reacted with an amine of the formula:, to give the desired …
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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 24, 1993. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended March 24, 2013.
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Everything on this page comes from the CIPO record linked above. Contains information licensed under the Open Government Licence – Canada.