反应详情

A mixture of 1.56 g of 5,7,8,9-tetrahydro-6H-pyrido[3,2-b]azepine-6-one, 3.31 g of lithium aluminum hydride in 40 ml of tetrahydrofuran is refluxed for 4 hours. The mixture is cooled (0° C.) and 25 ml of methanol is added dropwise. The mixture is filtered through diatomaceous earth, the filter cake washed with tetrahydrofuran and the filtrate concentrated to dryness under vacuum. Water (50 ml) is added to the residue and the mixture extracted with diethyl ether. The extract is dried (Na2 SO4) and filtered through a thin pad of hydrous magnesium silicate (pad washed with) diethyl ether. The filtrate is concentrated under vacuum to give 1.01 g of crystals, m.p. 70°-71° C.

1. temperatureis refluxed for 4 hours
2. additionis added dropwise
3. filtrationThe mixture is filtered through diatomaceous earth
4. washthe filter cake washed with tetrahydrofuran
5. concentrationthe filtrate concentrated to dryness under vacuum
6. additionWater (50 ml) is added to the residue
7. extractionthe mixture extracted with diethyl ether
8. customThe extract is dried (Na2 SO4)
9. filtrationfiltered through a thin pad of hydrous magnesium silicate (pad washed with) diethyl ether
10. concentrationThe filtrate is concentrated under vacuum