反应详情

A mixture of 2,3-dihydro-N-(phenylmethyl)-1,4-dioxino[2,3-b]pyridine-3-methanamine (0.0059 mol) and intermediate (18) (0.00497 mol) in methanol (30 ml) was stirred and refluxed overnight. The solvent was evaporated. The residue was purified by short open column chromatography over silica gel (eluent: CH2Cl2/2-propanone 96/4, 90/10 and 80/20), then CH2Cl2/CH3OH 96/4 and 90/10). The product fractions were collected and the solvent was evaporated, yielding 1.29 g of (±)-1-[3-[[(2,3-dihydro-1,4-dioxino-[2,3-b]pyridin-3-yl)methyl](phenylmethyl)amino]-2-hydroxypropyl]-2,4-imidazolidine-dione (compound 12).

1. temperaturerefluxed overnight
2. customThe solvent was evaporated
3. customThe residue was purified by short open column chromatography over silica gel (eluent: CH2Cl2/2-propanone 96/4, 90/10 and 80/20)
4. customThe product fractions were collected
5. customthe solvent was evaporated