反应详情

3-(Diethoxy-phosphorylmethyl)-5-methyl-hexanoic acid ethyl ester (1.0 g, 3.2 mmol) and NaOH (1.8 mL, 2.0 M) are combined in 10 mL of EtOH at 0° C. After 15 minutes, the reaction mixture is warmed to room temperature and stirred overnight. The EtOH is evaporated, and 50 mL of 2.0 M NaOH is added. The solution is extracted with Et2O (2×50 mL), and then acidified to pH=1 with concentrated HCl. The acidic solution is extracted with EtOAc (3×50 mL), and the combined extracts are dried over MgSO4 and evaporated to give 0.65 g (72% yield) of 3-(diethoxy-phosphorylmethyl)-5-methyl-hexanoic acid as an oil. NMR (HI, 400 MHz, CDCl3) δ 0.9 (6H, d); δ 1.3 (8H, m); δ 1.6 (1H, m); δ 1.8 (2H, m); δ 2.3 (1 H, m); δ 2.5 (2H, m); δ 4.1 (4H, m).

1. customThe EtOH is evaporated
2. addition50 mL of 2.0 M NaOH is added
3. extractionThe solution is extracted with Et2O (2×50 mL)
4. extractionThe acidic solution is extracted with EtOAc (3×50 mL)
5. dry with materialthe combined extracts are dried over MgSO4
6. customevaporated