反应详情

To a stirred mixture of 8-quinolinesulfonamide (4.2 g) in 100 ml methylene chloride is added a 2 M toluene solution of trimethylaluminum (15 ml). The resulting solution is stirred under N2 for 45 min. Solid methyl (4-methoxy-6-methylpyrimidin-2-yl)carbamate (4.0 g) is added and the mixture is heated at reflux for 60 hrs. The reaction is quenched sequentially with acetic acid (2 ml) 6 N HCl (5 ml) and water (25 ml). The organic solution is retained, dried with MgSO4, filtered, and is concentrated in vacuo to a crude solid. Washing with methyl acetate afforded 3.6 g of a pale yellow powder m.p. 181°-185° C. The infrared spectrum showed characteristic absorption bands at 3100 and 1700 cm-1.

1. temperaturethe mixture is heated
2. temperatureat reflux for 60 hrs
3. customThe reaction is quenched sequentially with acetic acid (2 ml) 6 N HCl (5 ml) and water (25 ml)
4. dry with materialdried with MgSO4
5. filtrationfiltered
6. concentrationis concentrated in vacuo to a crude solid
7. washWashing with methyl acetate