反应详情

温度

50 °C

2-amino-2-methylbutanoic acid HCl salt (20 g, 130.2 mmol) was suspended in 150 mL methanol. A solution of HCL (4M in dioxane was added and the mixture heated to 50° C. overnight. The mixture was cooled to room temperature and evaporated to dryness under vacuum. The resulting isovaline methyl ester (20 g) was used without further purification. 1H NMR (300 MHz, DMSO) δ 3.78-3.64 (m, 1H), 3.61 (s, 3H), 3.54-3.41 (m, 1H), 2.50 (d, J=1.6 Hz, 1H), 1.76 (s, 2H), 1.66-1.35 (m, 2H), 1.17 (s, 3H), 0.77 (t, J=7.5 Hz, 3H).

1. temperatureThe mixture was cooled to room temperature
2. customevaporated to dryness under vacuum
3. customThe resulting isovaline methyl ester (20 g) was used without further purification