反应详情

温度

-10 °C

1-[2-amino-3-chloro-4-(2,2-dimethoxy-ethoxy)-phenyl]-ethanone (1.89 g, 6.92 mmol) and 4-isopropyl-thiazole-2-carboxylic acid (1.77 g, 10.38 mmol) was dissolved in pyridine (20 mL) and was cooled to −10° C. POCl3 (0.823 mL, 8.99 mmol) was added dropwise. The reaction was stirred at −10° C. for 2 hours. The reaction was quenched with CH3OH (5 mL). After 15 minutes, the reaction was taken up in EtOAc and extracted with 2N HCl(aq). The organic layer was dried with Na2SO4, filtered and was concentrated. 4-Isopropyl-thiazole-2-carboxylic acid [6-acetyl-2-chloro-3-(2,2-dimethoxy-ethoxy)-phenyl]-amide (2.84 g, 96%) was isolated by silica gel chromatography as a white solid.

1. customThe reaction was quenched with CH3OH (5 mL)
2. waitAfter 15 minutes
3. extractionextracted with 2N HCl(aq)
4. dry with materialThe organic layer was dried with Na2SO4
5. filtrationfiltered
6. concentrationwas concentrated