反应详情

温度

100 °C

To a round-bottom flask was added a solution of methyl 5-(4-(4-cyanophenyl)piperidine-1-carbonyl)-2-cyclopropyl-4-ethylbenzoate (compound 228.1, 830 mg, 1.99 mmol, 1.00 equiv) in ethanol (15 mL). Hydrazine (5 mL, 100 equiv) was added to the reaction. The resulting solution was stirred for 15 h at 100° C., then concentrated in vacuo. The residue was extracted with 100 mL of dichloromethane and the combined organic layers were washed with 1×30 mL of brine, dried over anhydrous sodium sulfate and concentrated in vacuo. This resulted in 0.800 g (96%) of 5-(4-(4-cyanophenyl)piperidine-1-carbonyl)-2-cyclopropyl-4-ethylbenzohydrazide as a white solid.

1. concentrationconcentrated in vacuo
2. extractionThe residue was extracted with 100 mL of dichloromethane
3. washthe combined organic layers were washed with 1×30 mL of brine
4. dry with materialdried over anhydrous sodium sulfate
5. concentrationconcentrated in vacuo
6. customThis resulted in 0.800 g (96%) of 5-(4-(4-cyanophenyl)piperidine-1-carbonyl)-2-cyclopropyl-4-ethylbenzohydrazide as a white solid