反应详情

A mixture of (S)-1,2-epoxy-3-phenoxypropane (0.495 g.) and N-(2-aminoethyl)isobutyramide (0.429 g) in ethanol (25 ml) was heated under reflux for 48 hours. The reaction mixture was cooled and solvent removed by rotary evaporation in vacuo. The residual solid was purified by column chromatography on silica (Merck, Art. 7736) using 5% v/v methanol in dichloromethane as eluant. The solid thereby obtained was purified by recrystallisation from ethyl acetate to give (S)-N-(2-[2-hydroxy-3-phenoxypropyl]aminoethyl)isobutyramide (0.425 g), m.p. 88°-89° C., 24 [α]D -5.8° [c, 1.04; methanol], mixed m.p. with material from Example 1, 88°-89° C.

1. temperaturewas heated
2. temperatureunder reflux for 48 hours
3. temperatureThe reaction mixture was cooled
4. customsolvent removed by rotary evaporation in vacuo
5. customThe residual solid was purified by column chromatography on silica (Merck, Art. 7736)
6. customThe solid thereby obtained
7. customwas purified by recrystallisation from ethyl acetate