反应详情

A mixture of 1-cyano-4-hydroxy-7-(4-methoxy-phenoxy)-isoquinoline-3-carboxylic acid butyl ester (110 mg, 0.28 mmol) and glycine (275 mg, 2.82 mmol) in a solution of sodium methoxide (0.5 M in methanol; 5.7 mL) was refluxed overnight. Reaction mixture was concentrated and dissolved in water (50 mL). It was washed with ethyl acetate (10 mL). Aqueous layer was acidified by 1 N HCl to pH=3-4 and extracted with ethyl acetate. Organic layer was washed with brine, dried over magnesium sulfate, filtered, and concentrated. Crude product was triturated with methanol (3 mL) and solid was collected and dried to give the title compound (72 mg). MS-(+)-ion: M+1=394.32.

1. temperaturewas refluxed overnight
2. customReaction mixture
3. concentrationwas concentrated
4. dissolutiondissolved in water (50 mL)
5. washIt was washed with ethyl acetate (10 mL)
6. extractionextracted with ethyl acetate
7. washOrganic layer was washed with brine
8. dry with materialdried over magnesium sulfate
9. filtrationfiltered
10. concentrationconcentrated
11. customCrude product was triturated with methanol (3 mL) and solid
12. customwas collected
13. customdried