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HRID 1255161作成日:2026年10月26日

Hydrochloric Acid → Trifluoroacetic acid

https://huagongshe.com/reaction/1255161

反応式

関与物質

役割名称HCID仕込み量
反応物Hydrochloric AcidHCID 313—
反応物Lithium HydroxideHCID 3939—
反応物1,4-DioxaneHCID 31275—
反応物Ethyl 1-[6-(2-{[4-(2-phenylethyl)benzyl]oxy}phenyl)pyridin-2-yl]-5-(trifluoromethyl)-1H-pyrazole-4-carboxylateHCID 67159203—
生成物Trifluoroacetic acidHCID 6422—
生成物1-[6-(2-{[4-(2-Phenylethyl)benzyl]oxy}phenyl)pyridin-2-yl]-5-(trifluoromethyl)-1H-pyrazole-4-carboxylic acidHCID 25233125—

反応条件

温度60 °C

反応手順

To a solution of the title compound from Example 1 Step C (27.0 mg, 0.048 mmol) in 1,4-dioxane (2 mL) was added lithium hydroxide (1.0 mL, 2.0 M aqueous, 2.0 mmol), and the resulting mixture was stirred at 60° C. After 15 min, the reaction mixture was rendered acidic by addition of aqueous hydrochloric acid, then was diluted with 1,4-dioxane and passed through a 0.45 micron syringe filter. Purification by reverse phase HPLC (30 to 100% acetonitrile in water, each with 0.1% v/v TFA) provided the title compound: LCMS m/z 544.4 [M+H]+; 1H NMR (500 MHz, d6-DMSO) δ 8.25 (s, 1H), 8.14-8.07 (m, 2H), 7.74 (d, J=7.5 Hz, 1H), 7.69 (d, J=7.5 Hz, 1H), 7.42 (t, J=7.5 Hz, 1H), 7.32 (d, J=8.0 Hz, 1H), 7.27-7.14 (m, 8H), 7.09 (t, J=8.0 Hz, 1H), 5.19 (s, 2H), 2.86 (app s, 4H).

情報源と証拠

DOI10.6084/m9.figshare.5104873.v1
特許番号US08455638B2
出典データセットuspto-grants-2013_06
ORD IDord-8d15f1a163d84cf185640e091a810629
出典メモuspto-grants-2013_06