Potassium Carbonate → HCID 76281321, compound

HRID 929800Notes

Reaction equation

Br[CH2:2][C:3]1[CH:8]=[CH:7][C:6]([C:9]2[CH:13]=[C:12]([C:14]([NH2:16])=[O:15])[O:11][N:10]=2)=[CH:5][CH:4]=1.[F:17][C:18]([F:28])([F:27])[O:19][C:20]1[CH:25]=[CH:24][CH:23]=[CH:22][C:21]=1[OH:26].C([O-])([O-])=O.[K+].[K+]>CC#N>[F:17][C:18]([F:27])([F:28])[O:19][C:20]1[CH:25]=[CH:24][CH:23]=[CH:22][C:21]=1[O:26][CH2:2][C:3]1[CH:8]=[CH:7][C:6]([C:9]2[CH:13]=[C:12]([C:14]([NH2:16])=[O:15])[O:11][N:10]=2)=[CH:5][CH:4]=1

Participants

Conditions

Temperature: 90 °C

Procedure

To a mixture of 3-(4-bromomethyl-phenyl)-isoxazole-5-carboxylic acid amide (which may be prepared as described in Preparation of Intermediate 14; 30 mg, 0.107 mmol) in CH3CN (2 mL) were added 2-trifluoromethoxyphenol (25 μL, 0.187 mmol) and K2CO3 (30 mg, 0.22 mmol). The mixture was heated at 90° C. for 16 h and then evaporated to dryness. The residue was purified by chromatography (66-75% EtOAc/hexanes) to give 3-[4-(2-trifluoromethoxy-phenoxymethyl)-phenyl]-isoxazole-5-carboxylic acid amide (30 mg, 74%) as a white powder. 1H NMR (300 MHz, DMSO-d6) δ ppm 8.39 (br. s., 1H), 8.01 (br. s., 1H), 7.94 (d, J=8.4 Hz, 2H), 7.54-7.63 (m, 3H), 7.26-7.41 (m, 3H), 6.97-7.07 (m, 1H), 5.29 (s, 2H).

Workup

customevaporated to dryness
customThe residue was purified by chromatography (66-75% EtOAc/hexanes)

Sources & evidence

ORD record: ord-4f64356b430643f9b8317e5ea0bb531e
Source dataset: uspto-grants-2016_03
DOI: 10.6084/m9.figshare.5104873.v1
Patent number: US09296711B2

Reaction notes

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