Isopropylamine → 2-[2-(3-Butyl-5-methyl-isoxazol-4-yl)-ethyl]-4-methyl-thiazole-5-carboxylic acid iso-propylamide

온도

90 °C

To a stirred solution of isopropylamine (77 mg, 1.3 mmol) in dioxane (3 mL) under argon and at room temperature was added trimethylaluminium (0.65 mL of a 2M solution in toluene, 1.3 mmol). After 1 h, a solution of 2-[2-(3-butyl-5-methyl-isoxazol-4-yl)-ethyl]-4-methyl-thiazole-5-carboxylic acid (100 mg, 0.32 mmol) in dioxane (4 mL) was added and the reaction mixture heated at 90° C. overnight. The reaction mixture was then cooled, quenched with ice water and extracted with dichloromethane. The combined extracts were washed with Seignette's salt solution then dried, filtered, and concentrated. Purification by chromatography (silica, 0 to 5% methanol in dichloromethane) gave the title compound (50 mg, 44%) as a light yellow oil. MS: m/e=350.5 [M+H]+.

1. temperatureThe reaction mixture was then cooled
2. customquenched with ice water
3. extractionextracted with dichloromethane
4. washThe combined extracts were washed with Seignette's salt solution
5. customthen dried
6. filtrationfiltered
7. concentrationconcentrated
8. customPurification by chromatography (silica, 0 to 5% methanol in dichloromethane)

ORD 기록

ord-d44bd3e46c1b44eabe2876078a11c2f2

출처 데이터셋

uspto-grants-2012_05

DOI

10.6084/m9.figshare.5104873.v1

특허 번호

US08178522B2