反应详情

Imidazole (4.10 g, 60.22 mmol) and TBDMSCl (3.60 g, 23.89 mmol) was added to a stirred solution of 2-hydroxy-hexanoic acid ethyl ester (3.20 g, 19.97 mmol) in DMF (25 mL). The reaction mixture was kept at ambient temperature for 18 hrs. Water and diethyl ether were added and the two phases were separated. The aqueous phase was extracted with diethyl ether. The organic extracts were combined and washed sequentially with 0.5 M HCl and water, dried over MgSO4 and concentrated in vacuo to give the title product (5.30 g), 1H NMR (300 MHz, CDCl3) δ 4.18 (m, 3H), 1.69 (m, 2H), 1.35 (m, 4H), 1.28 (t, 3H), 0.91 (m, 12H), 0.07 (d, 6H).

1. customthe two phases were separated
2. extractionThe aqueous phase was extracted with diethyl ether
3. washwashed sequentially with 0.5 M HCl and water
4. dry with materialdried over MgSO4
5. concentrationconcentrated in vacuo