反应详情

A mixture of 3-(5-(aminosulfonyl)-4-chloro-2-[(2-furanylmethyl)amino]benzoyloxy)propanol (805) (0.060 mole), succinic anhydride (Aldrich) (0.060 mole), DBN (1,5-diazabicyclo[4.3.0]non-5-ene,(Aldrich) (0.060 mole) and dry acetonitrile (50 mL) is stirred at ambient temperature for 10 hours. The reaction mixture is diluted with dichloromethane (200 mL) and extracted with 0.1 N hydrochloric acid solution, washed with water, and then with a saturated sodium chloride solution. The organic layer is dried over sodium sulfate, filtered and concentrated in vacuo to give crude product, which may be purified by column chromatography on silica gel with hexanes/ethyl acetate as eluent. The fractions that contain pure product may be combined and spin evaporated in vacuo to give to give 4-(3-(5-(aminosulfonyl)-4-chloro-2-[(2-furanylmethyl)amino]benzoyloxy)propoxy)(4-oxo)butanoic acid (810).

1. extractionextracted with 0.1 N hydrochloric acid solution
2. washwashed with water
3. dry with materialThe organic layer is dried over sodium sulfate
4. filtrationfiltered
5. concentrationconcentrated in vacuo
6. customto give crude product, which
7. custommay be purified by column chromatography on silica gel with hexanes/ethyl acetate as eluent
8. customspin evaporated in vacuo
9. customto give