1-Butanol → HCID 66880202, compound

HRID 2094400Notes

Reaction equation

F[C:2]1[CH:3]=[N:4][CH:5]=[CH:6][C:7]=1[C:8]1[O:9][C:10]2[CH:16]=[CH:15][C:14]([C:17]([F:20])([F:19])[F:18])=[CH:13][C:11]=2[N:12]=1.C(=O)([O-])[O-].[K+].[K+].[CH2:27]([OH:31])[CH2:28][CH2:29][CH3:30]>O>[CH2:27]([O:31][C:2]1[CH:3]=[N:4][CH:5]=[CH:6][C:7]=1[C:8]1[O:9][C:10]2[CH:16]=[CH:15][C:14]([C:17]([F:20])([F:19])[F:18])=[CH:13][C:11]=2[N:12]=1)[CH2:28][CH2:29][CH3:30]

Participants

Conditions

Temperature: 100 °C

Procedure

A mixture of 0.28 g of 2-(3-fluoropyridin-4-yl)-5-(trifluoromethyl)benzoxazole, 0.27 g of potassium carbonate and 3 ml of butanol was stirred while heating at 100° C. for six hours. To the mixture, 0.14 g of potassium carbonate was added, and the reaction mixture was stirred while heating at 100° C. for further four hours. The reaction mixture was cooled to room temperature, and then water was added to the reaction mixture, followed by extraction with ethyl acetate twice. The combined organic layers were washed with a saturated sodium chloride solution, dried over anhydrous magnesium sulfate, and concentrated under reduced pressure. The residue was subjected to silica gel column chromatography to give 0.24 g of 2-(3-butoxypyridin-4-yl)-5-(trifluoromethyl)benzoxazole (hereinafter, referred to as “active compound 72”).

Workup

stirringthe reaction mixture was stirred
temperaturewhile heating at 100° C. for further four hours
temperatureThe reaction mixture was cooled to room temperature
extractionfollowed by extraction with ethyl acetate twice
washThe combined organic layers were washed with a saturated sodium chloride solution
dry with materialdried over anhydrous magnesium sulfate
concentrationconcentrated under reduced pressure

Sources & evidence

ORD record: ord-ab4b2537978d47e2923995bbdfc888cf
Source dataset: uspto-grants-2013_05
DOI: 10.6084/m9.figshare.5104873.v1
Patent number: US08445522B2

Reaction notes

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