反应详情

10.9 g (50 mmol) of N-(2-tert-butoxycarbonylaminoethyl)aminoacetic acid are stirred together with 50 ml of water, 11.3 g (135 mmol) of sodium hydrogen carbonate and 50 ml of tetrahydrofuran. Subsequently, 24.3 g (72 mmol) of N-(9-fluorenylmethoxycarbonyloxy)succinimide are added. The mixture is stirred at room tmeperature for 20 h and the salt removed by filtration; the filtrate is acidified and the phases separated, and the organic phase is then concentrated.

1. customthe salt removed by filtration
2. customthe phases separated
3. concentrationthe organic phase is then concentrated