2-Hydrazinopyridine → HCID 11439953, compound

Reaction equation

CN(C)[CH:3]=[CH:4][C:5]([C:7]1[CH:8]=[C:9]([C:13]2[CH:18]=[CH:17][CH:16]=[CH:15][C:14]=2[C:19]([F:22])([F:21])[F:20])[CH:10]=[CH:11][CH:12]=1)=O.[NH:24]([C:26]1[CH:31]=[CH:30][CH:29]=[CH:28][N:27]=1)[NH2:25]>C(O)C.CCOC(C)=O>[F:20][C:19]([F:21])([F:22])[C:14]1[CH:15]=[CH:16][CH:17]=[CH:18][C:13]=1[C:9]1[CH:10]=[CH:11][CH:12]=[C:7]([C:5]2[CH:4]=[CH:3][N:24]([C:26]3[CH:31]=[CH:30][CH:29]=[CH:28][N:27]=3)[N:25]=2)[CH:8]=1

Participants

Procedure

To a solution of the product from Step 1 (0.224 g, 0.7 mmol) in ethanol (3.5 mL) was added 2-hydrazinopyridine (0.076 g, 0.7 mmol) and the solution was refluxed for 16 hours. The reaction was cooled, diluted with EtOAc, washed with saturated sodium bicarbonate, brine and dried over sodium sulfate. The organic phase was filtered, concentrated, and the crude product was purified by reverse phase HPLC (acetonitrile/water system) (gradient: 30% to 100% acetonitrile over 12 minutes) to give product A (0.033 g, 29% yield, retention time 5.28 minutes) and the regioisomeric product B (0.021 g, 18% yield, retention time 7.25 minutes).