Hydrochloric Acid → 5-[{4-[(4-Butylphenyl)ethynyl]benzyl}(methyl)amino]-2-fluorobenzoic acid

HRID 551961Notes

Reaction equation

[CH2:1]([C:5]1[CH:10]=[CH:9][C:8]([C:11]#[C:12][C:13]2[CH:32]=[CH:31][C:16]([CH2:17][N:18]([CH3:30])[C:19]3[CH:20]=[CH:21][C:22]([F:29])=[C:23]([CH:28]=3)[C:24]([O:26]C)=[O:25])=[CH:15][CH:14]=2)=[CH:7][CH:6]=1)[CH2:2][CH2:3][CH3:4].O.[OH-].[Li+].O.Cl>C1COCC1>[CH2:1]([C:5]1[CH:6]=[CH:7][C:8]([C:11]#[C:12][C:13]2[CH:32]=[CH:31][C:16]([CH2:17][N:18]([CH3:30])[C:19]3[CH:20]=[CH:21][C:22]([F:29])=[C:23]([CH:28]=3)[C:24]([OH:26])=[O:25])=[CH:15][CH:14]=2)=[CH:9][CH:10]=1)[CH2:2][CH2:3][CH3:4]

Participants

Conditions

Temperature: 100 °C

Procedure

To a solution of methyl 5-[{4-[(4-butylphenyl)ethynyl]benzyl}(methyl)amino]-2-fluorobenzoate (66 mg; 0.15 mmol) in 3 mL of anhydrous THF were added. Lithium Hydroxide monohydrate (65 mg; 1.54 mmol) and water (1 mL). The reaction mixture was stirred under micro waves at 100° C. for 3500 s. Then an aqueous solution of HCl was added; the residue was extracted with EtOAc. The combined organic layers were washed with brine, dried over magnesium sulfate, filtrated and concentrated to give 37 mg of the title compound as a white solid. HPLC, Rt: 5.66 min (purity=93.20%). LC/MS, M−(ESI): 414.5. 1H NMR (CDCl3) δ: 7.40 (m, 4H), 7.31 (s, 1H), 7.20 (m, 4H), 6.92 (t, 1H), 6.75 (m, 1H), 4.42 (s, 2H), 2.92 (s, 3H), 2.54 (t, J=7.7 Hz, 2H), 1.50 (m, 2H), 1.25 (m, 2H), 0.82 (t, J=7.5 Hz, 3H).

Workup

extractionthe residue was extracted with EtOAc
washThe combined organic layers were washed with brine
dry with materialdried over magnesium sulfate
filtrationfiltrated
concentrationconcentrated

Sources & evidence

ORD record: ord-9442a8760fdd4e8da3a5d9db927cb89e
Source dataset: uspto-grants-2011_05
DOI: 10.6084/m9.figshare.5104873.v1
Patent number: US07947851B2

Reaction notes

Loading…