反应详情

Tetraethylene glycol monomethyl ether (1.0 g, 4.8 mmol) and N,N′-disuccinimidyl carbonate (1.48 g, 5.8 mmol) were dissolved in acetonitrile (10 mL). Then triethylamine (1.0 mL, 7.2 mmol) was added and the reaction stirred overnight at room temperature. Crude reaction was evaporated to dryness, dissolved in sat. NaHCO3 (30 mL), washed ethyl acetate (2×30 mL), dried MgSO4, and evaporated to dryness. Column chromatography (Silica, ethyl acetate/MeOH, 20:1) afforded 1 a clear oil (0.462 g, 28% yield).

1. customCrude reaction
2. customwas evaporated to dryness
3. dissolutiondissolved in sat. NaHCO3 (30 mL)
4. washwashed ethyl acetate (2×30 mL), dried MgSO4
5. customevaporated to dryness