反应详情

A mixture of (2S)-2-amino-3-hydroxypropanoate (25 g, 238 mmol) and acetyl chloride (34 ml, 476 mmol) in absolute ethanol (250 ml) was stirred at 50° for 18 hr. The volatiles were removed in vacuo until the volume was reduced to ˜100 ml. Upon cooling the resultant precipitate was collected, washed with ether and hexane to give the title compound as a white powder (26.3 g, 65%). δH NMR (DMSO d6) 8.47 (3H, br s), 5.58 (1H, dd), 4.20 (2H, q), 4.08 (1H, t), 3.81 (2H, dd), 1.23 (3H, t).

1. customThe volatiles were removed in vacuo until the volume
2. temperatureUpon cooling the resultant precipitate
3. customwas collected
4. washwashed with ether and hexane