Hydrochloric Acid → 1-[6-Ethylsulfanyl-5-[(3-fluorophenyl)-methyl-carbamoyl]-4-methyl-pyridin-2-yl]-piperidine-4-carboxylic acid

HRID 922025Notes

Reaction equation

C[O:2][C:3]([CH:5]1[CH2:10][CH2:9][N:8]([C:11]2[CH:16]=[C:15]([CH3:17])[C:14]([C:18](=[O:28])[N:19]([C:21]3[CH:26]=[CH:25][CH:24]=[C:23]([F:27])[CH:22]=3)[CH3:20])=[C:13]([S:29][CH2:30][CH3:31])[N:12]=2)[CH2:7][CH2:6]1)=[O:4].[Li+].[OH-].Cl>CO.C1COCC1>[CH2:30]([S:29][C:13]1[N:12]=[C:11]([N:8]2[CH2:7][CH2:6][CH:5]([C:3]([OH:4])=[O:2])[CH2:10][CH2:9]2)[CH:16]=[C:15]([CH3:17])[C:14]=1[C:18](=[O:28])[N:19]([C:21]1[CH:26]=[CH:25][CH:24]=[C:23]([F:27])[CH:22]=1)[CH3:20])[CH3:31]

Participants

Conditions

Temperature: 70 °C

Procedure

A solution of 146 mg (0.32 mmol) 1-[6-Ethylsulfanyl-5-[(3-fluorophenyl)-methyl-carbamoyl]-4-methyl-pyridin-2-yl]-piperidine-4-carboxylic acid methyl ester (example 13) in a MeOH/THF mixture (1:1 v/v, 2 ml) was treated with 1 ml (2.0 mmol) 2M aq. LiOH sol. and heated to 70° C. for 16 h. Subsequently pH 3-4 was adjusted with a 2M aq. HCl sol., followed by extraction with EtOAc. The organic layer was washed with brine, dried over MgSO4 and concentrated in vacuo. As residue 112 mg (0.26 mmol, 79%) 1-[6-Ethylsulfanyl-5-[(3-fluorophenyl)-methyl-carbamoyl]-4-methyl-pyridin-2-yl]-piperidine-4-carboxylic acid (example 14) were obtained. [M+H]+ 432.2.

Workup

extractionfollowed by extraction with EtOAc
washThe organic layer was washed with brine
dry with materialdried over MgSO4
concentrationconcentrated in vacuo

Sources & evidence

ORD record: ord-fc73134b4d8a4c569ba5e9230158bf4d
Source dataset: uspto-grants-2016_03
DOI: 10.6084/m9.figshare.5104873.v1
Patent number: US09278103B2

Reaction notes

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