3-Pyridinemethanamine → N5-(3-Pyridylmethyl)-3-(4-fluorophenyl)-1H-5-indazolecarboxamide

HRID 2183121Notes

Reaction equation

C([N:4]1[C:12]2[C:7](=[CH:8][C:9]([C:13](Cl)=[O:14])=[CH:10][CH:11]=2)[C:6]([C:16]2[CH:21]=[CH:20][C:19]([F:22])=[CH:18][CH:17]=2)=[N:5]1)(=O)C.[NH2:23][CH2:24][C:25]1[CH:26]=[N:27][CH:28]=[CH:29][CH:30]=1>N1C=CC=CC=1>[F:22][C:19]1[CH:18]=[CH:17][C:16]([C:6]2[C:7]3[C:12](=[CH:11][CH:10]=[C:9]([C:13]([NH:23][CH2:24][C:25]4[CH:26]=[N:27][CH:28]=[CH:29][CH:30]=4)=[O:14])[CH:8]=3)[NH:4][N:5]=2)=[CH:21][CH:20]=1

Participants

Conditions

Temperature: 60 °C

Procedure

To a flask containing 1-acetyl-3-(4-fluorophenyl)-1H-indazole-5-carbonyl chloride (300 mg, 0.95 mmol) dissolved in pyridine (4 mL) was added 3-aminomethyl pyridine (106 μl, 1.05 mmol). The reaction was allowed to stir under a nitrogen atmosphere overnight. LCMS indicated the reaction was complete. Solvent was removed and water was added to the flask. A solid crashed out of solution that was collected by filtration. The solid was taken up in a 3% ammonia in methanol solution (8 mL) and allowed to reflux at 60° C. for three hours. The reaction was neutralized with 1 N HCl solution and extracted with ethyl acetate. The organic layer was dried with magnesium sulfate, filtered and concentrated to yield the title compound (134 mg, 41% yield). 1H NMR (DMSO-d6) δ 13.5 (s, 1H), 9.2 (s, 1H), 8.6 (m, 2H), 8.5 (s, 1H), 8.1 (m, 2H), 7.95 (d, 1H), 7.65 (d, 1H), 7.6 (m, 1H), 7.4 (m, 3H), 4.6 (m, 2H) ES-MS m/z 347 [M+1]+.

Workup

customSolvent was removed
additionwater was added to the flask
filtrationwas collected by filtration
extractionextracted with ethyl acetate
dry with materialThe organic layer was dried with magnesium sulfate
filtrationfiltered
concentrationconcentrated

Sources & evidence

ORD record: ord-758b549dec84434fb934386c354c1bcd
Source dataset: uspto-grants-2005_05
DOI: 10.6084/m9.figshare.5104873.v1
Patent number: US06897231B2

Reaction notes

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