反应详情

20 g (69.9 mmol) of N-{1-[3-(4-methylbenzyl)-5-oxo-4,5-dihydro-1,2,4-triazin-6-yl]-ethyl}acetamide are stirred under reflux in 200 ml of 2 N hydrochloric acid for 18 h. The cooled mixture is then neutralized using 6 N NaOH and evaporated to dryness in vacuo. The residue is suspended in methanol and the salt is separated off. The concentrated filtrate is flash-chromatographed using dichloromethane/methanol 20/1 and 5/1.

1. customevaporated to dryness in vacuo
2. customthe salt is separated off
3. customThe concentrated filtrate is flash-chromatographed