反应详情

To 18 mg (0.07 mmol) of 4-chloro-5-(4-chlorophenyl)isoxazole-3-carboxylic acid in anhydrous N,N-dimethylformamide (1 mL) was added O-(7-azabenzotriazol-1-yl)-N,N,N′,N′-tetramethyluronium hexafluorophosphate (HATU; 27 mg, 0.07 mmol), followed by (1S,3R)-3-aminocyclohexanol (8.1 mg, 0.07 mmol) with stirring at room temperature. After 18 h, the solvent was removed in vacuo, and the residue was partitioned between water and ethyl acetate. The aqueous layer was separated and repeatedly extracted with ethyl acetate, the combined organic extracts were dried (MgSO4), the solvent removed in vacuo and the residue was purified by preparative HPLC to afford the title compound: (5.3 mg, 0.015 mmol). MS (ESI) m/z (M+H+): 354.9/356.9.

1. customthe solvent was removed in vacuo
2. customthe residue was partitioned between water and ethyl acetate
3. customThe aqueous layer was separated
4. extractionrepeatedly extracted with ethyl acetate
5. dry with materialthe combined organic extracts were dried (MgSO4)
6. customthe solvent removed in vacuo
7. customthe residue was purified by preparative HPLC