反应详情

HCl (g) was bubbled through a solution of 3-hydroxy-3-methylbutyronitrile (5.0 g, 50.4 mmol) in diethyl ether (20 mL) and IMS (3.48 g, 75.6 mmol) at 0° C. for 30 minutes before leaving to stand at −5° C. over night. The solution was concentrated under vacuum affording 6.48 g (72%) of 3-hydroxy-3-methyl-butyrimidic acid ethyl ester. 1H NMR (400 MHz, CDCl3) δ: 11.36 (m br, 1H), 4.66 (q, 2H), 2.89 (s, 2H), 1.51 (t, 3H), 1.36 (s, 6H).

1. custombefore leaving
2. waitto stand at −5° C. over night
3. concentrationThe solution was concentrated under vacuum