反应详情

温度

100 °C

0.7g (2.5 mmol) of N-[2,2-dimethyl-6-hydroxychroman-4-yl]-N-methylmethanesulfonamide (Example 15b) was stirred at RT for 1 h with 1.6 g (5.2 mmol) of phosphazene base [tert-butylimino-tri(pyrrolidino)phosphorane] in 2.5 ml of DMF. 0.48 g (2.6 mmol) of diethylaminopropyl chloride hydrochloride was then added and the mixture was heated to 100° C. for 8 h. After stripping off the solvent in vacuo, the residue was taken up in EA and the mixture was washed with water. After drying over magnesium sulfate and chromatography through a short silica gel column, 0.48 g of N-[6-(3-diethylaminopropoxy)-2,2-dimethylchroman-4-yl]-N-methylmethanesulfonamide was obtained as a glassy solid.

1. washthe mixture was washed with water
2. dry with materialAfter drying over magnesium sulfate and chromatography through a short silica gel column