反应详情

Through a solution of 240 g of t-butyl isobutyrylacetate in 500 ml of methanol was passed 70 g of ammonia in 2 hours, maintaining the temperature at below 25° C. The resulting solution was sitrred at room temperature for 18 hours, after which the methanol was removed in vacuo. Methylene chloride was added and the suspension was filtered. The filtrate was concentrated on a rotary evaporator to give 180 g t-butyl 3-amino-4-methyl-2-pentenoate as an oil.

1. customin 2 hours
2. temperaturemaintaining the temperature at below 25° C
3. customafter which the methanol was removed in vacuo
4. additionMethylene chloride was added
5. filtrationthe suspension was filtered
6. concentrationThe filtrate was concentrated on a rotary evaporator