Hydrochloric Acid → rac-2-[(1R,2R,4S)-bicyclo[2.2.1]hept-2-ylamino]-4-(trifluoromethyl)pyrimidine-5-carboxylic acid

HRID 38765Notes

Reaction equation

[C@H:1]12[CH2:7][C@H:4]([CH2:5][CH2:6]1)[CH2:3][C@H:2]2[NH:8][C:9]1[N:14]=[C:13]([C:15]([F:18])([F:17])[F:16])[C:12]([C:19]([O:21]C)=[O:20])=[CH:11][N:10]=1.CO.[OH-].[Na+].Cl>O1CCCC1>[C@H:1]12[CH2:7][C@H:4]([CH2:5][CH2:6]1)[CH2:3][C@H:2]2[NH:8][C:9]1[N:14]=[C:13]([C:15]([F:16])([F:17])[F:18])[C:12]([C:19]([OH:21])=[O:20])=[CH:11][N:10]=1

Participants

Conditions

Temperature: 60 °C

Procedure

To a mixture of methyl rac-2-[(1R,2R,4S)-bicyclo[2.2.1]hept-2-ylamino]-4-(trifluoromethyl)pyrimidine-5-carboxylate (5.2 g), methanol (25 mL), and tetrahydrofuran (25 mL) was added a 1 M aqueous sodium hydroxide solution (33 mL) at room temperature, followed by stirring at 60° C. for 2 hours. To the reaction mixture was added 1 M hydrochloric acid, followed by stirring at room temperature for 30 minutes, and then the precipitate was collected by filtration and washed with water to obtain rac-2-[(1R,2R,4S)-bicyclo[2.2.1]hept-2-ylamino]-4-(trifluoromethyl)pyrimidine-5-carboxylic acid (4.9 g) as a white powder.

Workup

stirringby stirring at room temperature for 30 minutes
filtrationthe precipitate was collected by filtration
washwashed with water

Sources & evidence

ORD record: ord-d1e4dfcea73745eba96951d7852036f1
Source dataset: uspto-grants-2013_09
DOI: 10.6084/m9.figshare.5104873.v1
Patent number: US08524727B2

Reaction notes

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