反应详情

A solution of 4-ethylamino-2-methylthio-5-pyrimidinecarboxylate ethyl ester (8.93 g, 37.1 mmol) in 100 mL of tetrahydrofuran was added dropwise to a room temperature suspension of lithium aluminum hydride (2.30 g, 60.5 mmol) in 100 mL of tetrahydrofuran. After 10 minutes, the reaction was carefully quenched with 4.5 mL of water, 4.5 mL of 15% NaOH, and 16 mL of water, and the mixture was stirred for 1.5 hours. The white precipitate was removed by filtration washing with ethyl acetate. The filtrate was concentrated in vacuo and 1:1 hexane:ethyl acetate was added. The solids were collected to give 6.77 g (92%) of 4-ethylamino-2-methylthio-5-pyrimidinemethanol; mp 152°-156° C.

1. customthe reaction was carefully quenched with 4.5 mL of water, 4.5 mL of 15% NaOH, and 16 mL of water
2. customThe white precipitate was removed by filtration
3. washwashing with ethyl acetate
4. concentrationThe filtrate was concentrated in vacuo and 1:1 hexane
5. additionethyl acetate was added
6. customThe solids were collected