反应详情

[2-(1-Azido-ethoxy)-ethoxy]-acetic acid ethyl ester (0.10 g, 0.46 mmol) was stirred with 4 M aqueous sodium hydroxide (1.15 ml, 4.6 mmol) and ethanol (1.15 ml) at room temperature. After 4 hrs, all the solvents were removed under reduced pressure and the residue was dissolved in 5 ml water. The solution was adjusted to pH 5 with 1 N KH2PO4 and then extracted with DCM (2×15 ml). The aqueous layer was then acidified with 1 N HCl to pH 2 and then extracted with DCM (3×25 ml). All the DCM extracts were combined, dried over MgSO4 and evaporated under reduced pressure. The title compound was obtained as a colourless solid (42 mg, 48.3%).

1. customall the solvents were removed under reduced pressure
2. dissolutionthe residue was dissolved in 5 ml water
3. extractionextracted with DCM (2×15 ml)
4. extractionextracted with DCM (3×25 ml)
5. dry with materialdried over MgSO4
6. customevaporated under reduced pressure