Hydrazine → 5-(4-(4-Cyanophenyl)piperidine-1-carbonyl)-2-cyclopropyl-4-ethylbenzohydrazide

HRID 541375Notes

Reaction equation

[C:1]([C:3]1[CH:8]=[CH:7][C:6]([CH:9]2[CH2:14][CH2:13][N:12]([C:15]([C:17]3[C:18]([CH2:30][CH3:31])=[CH:19][C:20]([CH:27]4[CH2:29][CH2:28]4)=[C:21]([CH:26]=3)[C:22](OC)=[O:23])=[O:16])[CH2:11][CH2:10]2)=[CH:5][CH:4]=1)#[N:2].[NH2:32][NH2:33]>C(O)C>[C:1]([C:3]1[CH:8]=[CH:7][C:6]([CH:9]2[CH2:10][CH2:11][N:12]([C:15]([C:17]3[C:18]([CH2:30][CH3:31])=[CH:19][C:20]([CH:27]4[CH2:29][CH2:28]4)=[C:21]([CH:26]=3)[C:22]([NH:32][NH2:33])=[O:23])=[O:16])[CH2:13][CH2:14]2)=[CH:5][CH:4]=1)#[N:2]

Participants

Conditions

Temperature: 100 °C

Procedure

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.

Workup

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

Sources & evidence

ORD record: ord-b3eaaf9b42f04f2dbf5bb9d318dab487
Source dataset: uspto-grants-2014_10
DOI: 10.6084/m9.figshare.5104873.v1
Patent number: US08871790B2

Reaction notes

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