反应详情

温度

15 °C

A solution of t-butyl 2-aminoacetate (113.7 g, 866.8 mmol, 1.0 equiv) in toluene (1000 mL) was combined with benzophenone (157.9 g, 866.5 mmol, 1.0 equiv) and 4-methylbenzenesulfonic acid (14.9 g, 86.5 mmol, 0.1 equiv). The resulting solution was heated to reflux overnight. The mixture was then concentrated in vacuo to 600 mL. The mixture was cooled to 15° C. with a water/ice bath. The product precipitated and the solids were collected by filtration. The solids was washed with petroleum ether (5×150 mL) to yield t-butyl 2-(diphenylmethyleneamino)acetate (125 g) as a white solid.

1. temperatureThe resulting solution was heated
2. temperatureto reflux overnight
3. concentrationThe mixture was then concentrated in vacuo to 600 mL
4. customThe product precipitated
5. filtrationthe solids were collected by filtration
6. washThe solids was washed with petroleum ether (5×150 mL)