反应详情

A suspension of 2.270 g of 6-hydroxymethyl-2,2-dimethyl-4H-benz[1,4]oxazin-3-one in 180 ml of acetonitrile is admixed with 2.410 ml of 1-chloro-3-methoxypropane, 9.844 g of potassium fluoride on alumina and 0.036 g of potassium Iodide. The reaction mixture is heated to reflux over 30 hours and filtered through Hyflo, and the filtrate is concentrated. The title compound is obtained as a beige solid from the residue by means of flash chromatography (SiO2 60F). Rf=0.20 (3:1 EtOAc-heptane); Rt=3.25.

1. temperatureThe reaction mixture is heated
2. temperatureto reflux over 30 hours
3. filtrationfiltered through Hyflo
4. concentrationthe filtrate is concentrated