867130-58-3, 6-Oxo-1,6-dihydropyridazine-4-carboxylic acid is a pyridazine compound, ?involved in a variety of chemical synthesis. Rlated chemical reaction is continuously updated
867130-58-3, Step 10C: Ethyl 6-oxo-1,6-dihydropyridazine-4-carboxylate; The subtitle compound of step 10B was dissolved in EtOH (10 mL) and concentrated H2SO4 (4.2 mL) was added and then heated at reflux for 5 hours. The reaction mixture was cooled, concentrated in vacuo and basified with saturated Na2CO3. After filtration, the aqueous phase was extracted with ethyl acetate, dried over anhydrous Na2SO4, filtered and concentrated to give the subtitle compound (83%).1H NMR (400 MHz, MeOH-d4): delta 8.27 (d, 1H), 7.42 (d, 1H), 4.40 (q, 2H), 1.39 (t, 3H).
As the paragraph descriping shows that 867130-58-3 is playing an increasingly important role.
Reference£º
Patent; AstraZeneca AB; US2009/111821; (2009); A1;,
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