Hydrochloric Acid → 2-Chloro-6-oxo-1,6-dihydropyridine-3-carboxylic acid

Reaction equation

[Cl:1][C:2]1[N:10]=[C:9](Cl)[CH:8]=[CH:7][C:3]=1[C:4]([OH:6])=[O:5].[OH-:12].[Na+].Cl>>[Cl:1][C:2]1[NH:10][C:9](=[O:12])[CH:8]=[CH:7][C:3]=1[C:4]([OH:6])=[O:5]

Participants

Reactant 3

HCID 313Hydrochloric Acid

HCID 14798Sodium Hydroxide

HCID 8540472,6-Dichloronicotinic acid

Product 1

HCID 299195802-Chloro-6-oxo-1,6-dihydropyridine-3-carboxylic acidYield 88%

Conditions

Temperature: 129 °C

Procedure

A 500-mL round-bottom flask was charged with 2,6-dichloronicotinic acid (25.0 g, 130 mmol), NaOH solution (325 mL, 2N) and the solution was refluxed at 129° C. for 4 hours. The reaction mixture was cooled to room temperature and acidified with a 6N aq. HCl solution. The resulting precipitate was filtered and dried under reduced pressure yielding to the desired product (19.87 g, 88%).