Sodium Hydroxide → 2-(1-methyl-5-(trifluoromethyl)-1H-indazol-3-yl)-5H-pyrrolo[3,2-b]pyrazine-7-carboxylic acid

HRID 246638Notes

Reaction equation

[CH3:1][N:2]1[C:10]2[C:5](=[CH:6][C:7]([C:11]([F:14])([F:13])[F:12])=[CH:8][CH:9]=2)[C:4]([C:15]2[N:20]=[C:19]3[C:21]([C:32]([O:34]C)=[O:33])=[CH:22][N:23](COC(=O)C(C)(C)C)[C:18]3=[N:17][CH:16]=2)=[N:3]1.[OH-].[Na+]>O1CCOCC1.O>[CH3:1][N:2]1[C:10]2[C:5](=[CH:6][C:7]([C:11]([F:13])([F:14])[F:12])=[CH:8][CH:9]=2)[C:4]([C:15]2[N:20]=[C:19]3[C:21]([C:32]([OH:34])=[O:33])=[CH:22][NH:23][C:18]3=[N:17][CH:16]=2)=[N:3]1

Participants

Conditions

Temperature: 90 °C

Procedure

To a suspension of methyl 2-(1-methyl-5-(trifluoromethyl)-1H-indazol-3-yl)-5-(pivaloyloxymethyl)-5H-pyrrolo[3,2-b]pyrazine-7-carboxylate (50 mg, 0.1 mmol) in dioxane/water (4 mL/4 mL) was added NaOH (40 mg, 1.0 mmol), the reaction mixture was heated to 90° C. with stirring for 7 hours, the dioxane was removed under reduced pressure, the aqueous layer was adjusted to pH=3 with 1 N HCl, the precipitate was collected by filtration and washed with water (5 mL) and dried to afford 2-(1-methyl-5-(trifluoromethyl)-1H-indazol-3-yl)-5H-pyrrolo[3,2-b]pyrazine-7-carboxylic acid (40 mg, crude) as an orange solid. LCMS: (M+H)+=362.

Workup

customthe dioxane was removed under reduced pressure
filtrationthe precipitate was collected by filtration
washwashed with water (5 mL)
customdried

Sources & evidence

ORD record: ord-2e2ba4ba59144523b7ac2ae8cfdd4880
Source dataset: uspto-grants-2014_02
DOI: 10.6084/m9.figshare.5104873.v1
Patent number: US08658646B2

Reaction notes

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