Diisopropylethylamine → 3-(benzyloxy)-N-(1-methyl-1H-pyrazol-3-yl)-5-{(1S)-1-methyl-2-[(triisopropylsilyl)oxy]ethoxy}benzamide

온도

0 °C

HATU (23.5 g, 61.8 mmol) was added to 3-(benzyloxy)-5-{(1S)-1-methyl-2-[(triisopropylsilyl)oxy]ethoxy}benzoic acid (23.6 g, 51.5 mmol), followed by addition of DMF (140 mL), and cooled to 0° C. 3-Amino-1-methylpyrazole (6.00 g, 61.8 mmol) was added followed by DIPEA (21.3 mL) and the reaction was stirred under argon at 0° C. for 3 hours. The solvent was evaporated and the residue was dissolved in ethyl acetate (500 mL) and washed with citric acid solution (200 mL), sodium hydrogen carbonate solution (150 mL), and saturated brine solution (2×150 mL). The organic layer was separated and dried (MgSO4), filtered and evaporated. Purification by column chromatography, eluting with 1:4 to 1:1 ethyl acetate:hexanes, afforded the title compound as a colourless oil (21.7 g).

1. customThe solvent was evaporated
2. dissolutionthe residue was dissolved in ethyl acetate (500 mL)
3. washwashed with citric acid solution (200 mL), sodium hydrogen carbonate solution (150 mL), and saturated brine solution (2×150 mL)
4. customThe organic layer was separated
5. dry with materialdried (MgSO4)
6. filtrationfiltered
7. customevaporated
8. customPurification by column chromatography
9. washeluting with 1:4 to 1:1 ethyl acetate

ORD 기록

ord-f98ef38cb0fb4329984cb47dd9f3b124

출처 데이터셋

uspto-grants-2010_11

DOI

10.6084/m9.figshare.5104873.v1

특허 번호

US07842694B2