反应详情

温度

25 °C

A 4.0 M solution of hydrochloric acid in 1,4-dioxane (20 mL) was added to a solution of (1S,2R)-2-tert-butoxycarbonylamino-1-cyclohexanecarboxylic acid methyl ester (1.28 g, 4.97 mmol) in 1,4-dioxane (15 mL) at 25° C. The reaction mixture was stirred at 25° C. for 2 h, then toluene (40 mL) was added and the volatiles were removed in vacuo. The residue was partitioned between saturated sodium bicarbonate solution (150 mL) and ethyl acetate (2×150 mL). The combined organic layers were dried over sodium sulfate, decanted, and were concentrated in vacuo to afford the crude product, (1S,2R)-2-amino-cyclohexanecarboxylic acid methyl ester as a yellow oil, which was used directly in the next step without further purification.

1. customthe volatiles were removed in vacuo
2. customThe residue was partitioned between saturated sodium bicarbonate solution (150 mL) and ethyl acetate (2×150 mL)
3. dry with materialThe combined organic layers were dried over sodium sulfate
4. customdecanted
5. concentrationwere concentrated in vacuo