Potassium Carbonate → tert-Butyl 2-(2-(4-chloro-1-methyl-1H-pyrazol-5-yl)-4-(3-(trifluoromethyl)benzamido)phenoxy)acetate

HRID 1685673Notes

Reaction equation

[Cl:1][C:2]1[CH:3]=[N:4][N:5]([CH3:27])[C:6]=1[C:7]1[CH:8]=[C:9]([NH:14][C:15](=[O:26])[C:16]2[CH:21]=[CH:20][CH:19]=[C:18]([C:22]([F:25])([F:24])[F:23])[CH:17]=2)[CH:10]=[CH:11][C:12]=1[OH:13].C(=O)([O-])[O-].[K+].[K+].Br[CH2:35][C:36]([O:38][C:39]([CH3:42])([CH3:41])[CH3:40])=[O:37]>CC(C)=O>[Cl:1][C:2]1[CH:3]=[N:4][N:5]([CH3:27])[C:6]=1[C:7]1[CH:8]=[C:9]([NH:14][C:15](=[O:26])[C:16]2[CH:21]=[CH:20][CH:19]=[C:18]([C:22]([F:23])([F:24])[F:25])[CH:17]=2)[CH:10]=[CH:11][C:12]=1[O:13][CH2:35][C:36]([O:38][C:39]([CH3:42])([CH3:41])[CH3:40])=[O:37]

Participants

Conditions

Temperature: 65 °C

Procedure

To a solution of N-(3-(4-chloro-1-methyl-1H-pyrazol-5-yl)-4-hydroxyphenyl)-3-(trifluoromethyl)benzamide (0.396 g, 1.00 mmol) and potassium carbonate (0.207 g, 1.50 mmol) in acetone (10 mL) was added tert-butyl bromoacetate (0.215 g, 1.10 mmol). The reaction was stirred at 65° C. for 1 hour and then cooled to room temperature and partitioned between ethyl acetate and water. The organic layer was washed with water (×2) and brine, dried over magnesium sulfate and concentrated to a white solid (0.464 g, 91.0%). LCMS m/z (%)=510 (M+H, 35Cl, 30), 512 (M+H, 37Cl, 10), 454 (M-tBu+H, 35Cl, 100). 1H NMR (400 MHz, CDCl3) δ 1.47 (s, 9H) 3.80 (s, 3H) 4.52 (s, 2H) 6.87 (d, J=9.09 Hz, 1H) 7.45 (d, J=2.78 Hz, 1H) 7.50 (s, 1H) 7.64 (t, J=7.71 Hz, 1H) 7.78-7.89 (m, 2H) 7.94 (s, 1H) 8.07 (d, J=7.83 Hz, 1H) 8.14 (s, 1H).

Workup

temperaturecooled to room temperature
custompartitioned between ethyl acetate and water
washThe organic layer was washed with water (×2) and brine
dry with materialdried over magnesium sulfate
concentrationconcentrated to a white solid (0.464 g, 91.0%)

Sources & evidence

ORD record: ord-61c887f258014740b8ebac2e38b8c139
Source dataset: uspto-grants-2012_04
DOI: 10.6084/m9.figshare.5104873.v1
Patent number: US08148418B2

Reaction notes

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