Hydrochloric Acid → 2-(4-(4-((6-(1H-tetrazol-1-yl)pyridin-3-yloxy)methyl)-2H-1,2,3-triazol-2-yl)piperidin-1-yl)pyrimidine-5-carboxylic acid

HRID 1928618Notes

Reaction equation

[N:1]1([C:6]2[N:11]=[CH:10][C:9]([O:12][CH2:13][C:14]3[CH:18]=[N:17][N:16]([CH:19]4[CH2:24][CH2:23][N:22]([C:25]5[N:30]=[CH:29][C:28]([C:31]([O-:33])=[O:32])=[CH:27][N:26]=5)[CH2:21][CH2:20]4)[N:15]=3)=[CH:8][CH:7]=2)[CH:5]=[N:4][N:3]=[N:2]1.[OH-].[Na+].Cl>CO>[N:1]1([C:6]2[N:11]=[CH:10][C:9]([O:12][CH2:13][C:14]3[CH:18]=[N:17][N:16]([CH:19]4[CH2:20][CH2:21][N:22]([C:25]5[N:26]=[CH:27][C:28]([C:31]([OH:33])=[O:32])=[CH:29][N:30]=5)[CH2:23][CH2:24]4)[N:15]=3)=[CH:8][CH:7]=2)[CH:5]=[N:4][N:3]=[N:2]1

Participants

Conditions

Temperature: 60 °C

Procedure

Ethyl 4-(2-(4-(4-((6-(1H-tetrazol-1-yl)pyridin-3-yloxy)methyl)-2H-1,2,3-triazol-2-yl)piperidin-1-yl)pyrimidine-5-carboxylate (0.8 g, 0.00167 mol) (Example 60) was dissolved in MeOH (20 mL). An aqueous solution of NaOH (10 eq., 40 mL) was added and the reaction mixture was heated at 60° C. for three hours. The methanol was removed in vacuo and the remaining reaction mixture was cooled to 0° C. and concentrated HCl was added drop wise until the pH reached 2-3. The aqueous solution was extracted with DCM, dried over sodium sulfate, filtered, and concentrated in vacuo to afford the title compound.

Workup

customThe methanol was removed in vacuo
customthe remaining reaction mixture
temperaturewas cooled to 0° C.
extractionThe aqueous solution was extracted with DCM
dry with materialdried over sodium sulfate
filtrationfiltered
concentrationconcentrated in vacuo

Sources & evidence

ORD record: ord-8713304cdd2f4b50856f140ef5d8c8af
Source dataset: uspto-grants-2012_05
DOI: 10.6084/m9.figshare.5104873.v1
Patent number: US08183381B2

Reaction notes

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