C - Chemistry – Metallurgy – 07 – D
Patent
C - Chemistry, Metallurgy
07
D
260/294.2
C07D 213/80 (2006.01)
Patent
CA 1125762
Abstract A process for the manufacture of l-ethyl-1,4-dihydro-6- -(2-naphthyl)-4-oxonicotinic acid and esters thereof of the general formula Image I wherein R represents hydrogen or C1-6-alkyl, and of alkali metal, alkaline earth metal and ammonium salts thereof, which process comprises dehydrogenating the corresponding 1,4,5,6-tetrahydronicotinic acid or ester thereof of the general formula Image II wherein R has the significance given earlier in this claim, in the 5,6-position and, if desired, converting the acid obtained into an alkali metal, alkaline earth metal or ammonium salt or esterifying said acid with a C1-6-alkanol, or saponifying a methyl ester obtained.
353626
Gowling Lafleur Henderson Llp
Hoffmann-La Roche Limited
LandOfFree
Dihydronicotinic acid derivatives and process for the... does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Dihydronicotinic acid derivatives and process for the..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Dihydronicotinic acid derivatives and process for the... will most certainly appreciate the feedback.
Profile ID: LFCA-PAI-O-480910