反应详情

2-(6-Quinolinyloxy)butyric acid (0.61 g), 4-amino-1-tert-butyldimethylsilyloxy-4-methylpent-2-yne (0.57 g) and 4-dimethylaminopyridine (0.010 g) in dry dichloromethane (10 ml) were stirred and N-(3-dimethylaminopropyl)-N′-ethylcarbodiimide hydrochloride (0.53 g) was added. The mixture was stirred at ambient temperature for 3.5 hours, stored for 2 days, diluted with dichloromethane, washed with saturated aqueous sodium hydrogen carbonate (twice) and then with water. The organic phase was dried over magnesium sulphate and evaporated under reduced pressure to give a yellow oil. The oil was fractionated by chromatography (silica; hexane/ethyl acetate, 3:1 by volume) to give a gum that was triturated with hexane to give the required product (0.12 g) as a colourless solid, m.p. 78–80° C.

1. waitstored for 2 days
2. washwashed with saturated aqueous sodium hydrogen carbonate (twice) and then with water
3. dry with materialThe organic phase was dried over magnesium sulphate
4. customevaporated under reduced pressure
5. customto give a yellow oil
6. customto give a gum that
7. customwas triturated with hexane