Hydrochloric Acid → HCID 59249031, compound

HRID 336795Notes

Reaction equation

[Cl:1][C:2]1[CH:7]=[CH:6][C:5]([O:8][CH3:9])=[CH:4][C:3]=1[NH:10][C:11]1[C:12]([NH:21][S:22]([C:25]2[CH:30]=[CH:29][CH:28]=[C:27]([C:31]#N)[CH:26]=2)(=[O:24])=[O:23])=[N:13][C:14]2[C:19]([N:20]=1)=[CH:18][CH:17]=[CH:16][CH:15]=2.O1CCOCC1.[OH-:39].[Na+].Cl.C[OH:43]>C(OCC)(=O)C>[Cl:1][C:2]1[CH:7]=[CH:6][C:5]([O:8][CH3:9])=[CH:4][C:3]=1[NH:10][C:11]1[C:12]([NH:21][S:22]([C:25]2[CH:26]=[C:27]([CH:28]=[CH:29][CH:30]=2)[C:31]([OH:43])=[O:39])(=[O:24])=[O:23])=[N:13][C:14]2[C:19]([N:20]=1)=[CH:18][CH:17]=[CH:16][CH:15]=2

Participants

Conditions

Temperature: 90 °C

Procedure

To a solution of N-(3-{[2-chloro-5-(methoxy)-phenyl]amino}quinoxalin-2-yl)-3-cyanobenzenesulfonamide (6.02 g, 12.95 mmol), prepared using procedures similar to those in Example 115 or Example 423, in methanol (20 mL) and 1,4-dioxane (20 mL) was added 6.0 N aqueous sodium hydroxide (40 mL) at room temperature. The solution was stirred at 90° C. for 3.5 h. The reaction was cooled to room temperature and neutralized slowly by adding 2.0 N hydrochloric acid until the pH of the solution became in the 2-3 range at 0° C. The solution was diluted with ethyl acetate (300 mL). The organic layer was washed with saturated aqueous sodium chloride (50 mL) and dried over magnesium sulfate. Filtration and concentration at reduced pressure afforded 3-{[(3-{[2-chloro-5-(methoxy)-phenyl]amino}quinoxalin-2-yl)amino]sulfonyl}benzoic acid (5.921 g, 94%). MS (EI) m/z for C22H17ClN4O5S: 485.0 (MH+).

Workup

temperatureThe reaction was cooled to room temperature
custombecame in the 2-3 range at 0° C
washThe organic layer was washed with saturated aqueous sodium chloride (50 mL)
dry with materialdried over magnesium sulfate
filtrationFiltration and concentration at reduced pressure

Sources & evidence

ORD record: ord-d4b94bacaba4414d98df07fcbcb409ba
Source dataset: uspto-grants-2014_11
DOI: 10.6084/m9.figshare.5104873.v1
Patent number: US08889664B2

Reaction notes

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