反应详情

Cyclohexylamine (510 mg), (3-carboxymethyl-phenyl)-acetic acid (1.0 g), 1-hydroxybenzotriazole (700 mg) and Hunigs base (0.9 mL) were added to a round bottomed flask and dissolved in dichloromethane (40 mL) at room temperature. The mixture was stirred at room temperature for 5 minutes then 1-(3-dimethylaminopropyl)-3-ethylcarbodiimide hydrochloride (990 mg) was added. The reaction was stirred at room temperature for 3 hours. The mixture was diluted with dichloromethane (40 mL) and washed with 2M hydrochloric acid (2×40 mL). The organic layer was isolated and extracted with 2M sodium hydroxide (2×40 mL). The basic extract was isolated, acidified with 2M hydrochloric acid and extracted with dichloromethane (2×40 mL). The dichloromethane extracts were combined, dried over anhydrous sodium sulphate, filtered and concentrated to give 626 mg of the sub-titled product as a white solid.

1. stirringThe reaction was stirred at room temperature for 3 hours
2. washwashed with 2M hydrochloric acid (2×40 mL)
3. customThe organic layer was isolated
4. extractionextracted with 2M sodium hydroxide (2×40 mL)
5. extractionThe basic extract
6. customwas isolated
7. extractionextracted with dichloromethane (2×40 mL)
8. dry with materialdried over anhydrous sodium sulphate
9. filtrationfiltered
10. concentrationconcentrated