Cesium carbonate → N-(3-(2-methyl-2H-pyrazol-3-yl)-4-(2-methyl-2-nitropropoxy)phenyl)acetamide

HRID 1183908Notes

Reaction equation

C(=O)([O-])[O-].[Cs+].[Cs+].CS([O:11][CH2:12][C:13]([CH3:18])([N+:15]([O-:17])=[O:16])[CH3:14])(=O)=O.O[C:20]1[CH:25]=[CH:24][C:23]([NH:26][C:27](=[O:29])[CH3:28])=[CH:22][C:21]=1[C:30]1[N:31]([CH3:35])[N:32]=[CH:33][CH:34]=1>CC(N(C)C)=O>[CH3:35][N:31]1[C:30]([C:21]2[CH:22]=[C:23]([NH:26][C:27](=[O:29])[CH3:28])[CH:24]=[CH:25][C:20]=2[O:11][CH2:12][C:13]([CH3:18])([N+:15]([O-:17])=[O:16])[CH3:14])=[CH:34][CH:33]=[N:32]1

Participants

Conditions

Temperature: 160 °C

Procedure

Cesium carbonate (7.04 g, 21.6 mmol) was added to a solution of 2-methyl-2-nitropropyl methanesulfonate (2.39 g, 12.1 mmol) and N-(4-hydroxy-3-(2-methyl-2H-pyrazol-3-yl)phenyl)acetamide (2.00 g, 8.65 mmol) in dimethylacetamide (15 mL) and the mixture was stirred at 160° C. After 2 h, the solvent was evaporated, and the residue was triturated with water. The precipitate was isolated by filtration, washed with water and dried in vacuo to afford the product (2.38 g, 83%) as a tan solid. LCMS m/z (%)=333.4 (M+H 100%). 1H NMR (400 MHz, DMSO-d6) δ ppm 1.47 (s, 6 H), 2.02 (s, 3 H), 3.53 (s, 3 H), 4.32 (s, 2 H), 6.15 (d, J=2.02 Hz, 1 H), 7.14 (d, J=8.84 Hz, 1 H), 7.44 (d, J=1.77 Hz, 1 H), 7.49 (d, J=2.78 Hz, 1 H), 7.62 (dd, J=8.97, 2.65 Hz, 1 H), 9.94 (s, 1 H).

Workup

customthe solvent was evaporated
customthe residue was triturated with water
customThe precipitate was isolated by filtration
washwashed with water
customdried in vacuo

Sources & evidence

ORD record: ord-941148d16bf84341b8678c9db0ec2439
Source dataset: uspto-grants-2014_03
DOI: 10.6084/m9.figshare.5104873.v1
Patent number: US08664258B2

Reaction notes

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