3-羟基-3-甲基丁腈

反应条件: temp:0.00; pressure:0.00; stir:; See reaction.notes.procedure_details.

实验步骤: Chloroformic cyanotert. butyl ester is prepared by reacting cyanotert butanol (10 g, 100 mMole) and pyridine (10 g, 125 mmole) in dichloromethane (150 ml) at about -40° C. together with liquid phosgene (-70° C., 40 ml, 600 mMole). The mixture is allowed to warm to room temperature and stirred over night. It is then extracted with ice cold aqueous hydrochloric acid (1N) washed twice with ice water immediately dried by shaking several times with fresh anhydrous sodium sulfate, the aqueous phases and the sodium sulfate are twice reextracted with a small amount of dichloromethane, and the combined organic phases are evaporated under reduced pressure (20° C. bath) to yield the product (17 g, 100% yield). at about -40° C. It is then extracted with ice cold aqueous hydrochloric acid (1N) washed twice with ice water immediately dried by shaking several times with fresh anhydrous sodium sulfate the combined organic phases are evaporated under reduced pressure (20° C. bath)

反应条件: temp:0.00; pressure:0.00; stir:; See reaction.notes.procedure_details.

实验步骤: Chloroformic cyanotert. butyl ester is prepared by reacting cyanotert butanol (10 g, 100 mMole) and pyridine (10 g, 125 mmole) in dichloromethane (150 ml) at about -40° C. together with liquid phosgene (-70° C., 40 ml, 600 mMole). The mixture is allowed to warm to room temperature and stirred over night. It is then extracted with ice cold aqueous hydrochloric acid (1N) washed twice with ice water immediately dried by shaking several times with fresh anhydrous sodium sulfate, the aqueous phases and the sodium sulfate are twice reextracted with a small amount of dichloromethane, and the combined organic phases are evaporated under reduced pressure (20° C. bath) to yield the product (17 g, 100% yield). at about -40° C. It is then extracted with ice cold aqueous hydrochloric acid (1N) washed twice with ice water immediately dried by shaking several times with fresh anhydrous sodium sulfate the combined organic phases are evaporated under reduced pressure (20° C. bath)

反应条件: temp:0.00; pressure:0.00; stir:; See reaction.notes.procedure_details.

实验步骤: 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). before leaving to stand at −5° C. over night The solution was concentrated under vacuum

反应条件: temp:0.00; pressure:0.00; stir:; See reaction.notes.procedure_details.

实验步骤: Chloroformic cyanotert. butyl ester is prepared by reacting cyanotert butanol (10 g, 100 mMole) and pyridine (10 g, 125 mmole) in dichloromethane (150 ml) at about -40° C. together with liquid phosgene (-70° C., 40 ml, 600 mMole). The mixture is allowed to warm to room temperature and stirred over night. It is then extracted with ice cold aqueous hydrochloric acid (1N) washed twice with ice water immediately dried by shaking several times with fresh anhydrous sodium sulfate, the aqueous phases and the sodium sulfate are twice reextracted with a small amount of dichloromethane, and the combined organic phases are evaporated under reduced pressure (20° C. bath) to yield the product (17 g, 100% yield). at about -40° C. It is then extracted with ice cold aqueous hydrochloric acid (1N) washed twice with ice water immediately dried by shaking several times with fresh anhydrous sodium sulfate the combined organic phases are evaporated under reduced pressure (20° C. bath)