Water → 1-({2-[3-chloro-5-(trifluoromethyl)phenyl]-5-methyl-1,3-thiazol-4-yl}methyl)-1H-pyrazole-4-carboxylic acid

To a solution of the compound (230 mg, 0.54 mmol) obtained in Example 83a in ethanol/tetrahydrofuran (v/v=1/1, 4 mL) was added 2N aqueous sodium hydroxide solution (1.1 mL, 2.2 mmol), and the mixture was stirred at room temperature overnight. Water was added to the reaction mixture, and the aqueous layer was washed with diethyl ether, neutralized with 1N aqueous hydrochloric acid solution, and the mixture was extracted with ethyl acetate. The obtained organic layer was washed with saturated brine, and dried over anhydrous sodium sulfate. The solvent was evaporated under reduced pressure. The resulting crude title compound was recrystallized (ethyl acetate-hexane) to give the title compound (150 mg, 70%) as colorless crystals.

1. washthe aqueous layer was washed with diethyl ether
2. extractionthe mixture was extracted with ethyl acetate
3. washThe obtained organic layer was washed with saturated brine
4. dry with materialdried over anhydrous sodium sulfate
5. customThe solvent was evaporated under reduced pressure
6. customThe resulting crude title compound was recrystallized (ethyl acetate-hexane)

ORDレコード

ord-fa992883a1b14beca4b20f9853a9ff5e

出典データセット

uspto-grants-2013_06

DOI

10.6084/m9.figshare.5104873.v1

特許番号

US08461348B2