N-methyl-2-pyrrolidone → 5-(2,6-difluorophenyl)-3-(6-(5,6-dihydropyridin-1(2H)-yl)pyrazin-2-yl)-1-(tetrahydro-2H-pyran-2-yl)-1H-indazole
Reaction equation
Cl[C:2]1[N:7]=[C:6]([C:8]2[C:16]3[C:11](=[CH:12][CH:13]=[C:14]([C:17]4[C:22]([F:23])=[CH:21][CH:20]=[CH:19][C:18]=4[F:24])[CH:15]=3)[N:10]([CH:25]3[CH2:30][CH2:29][CH2:28][CH2:27][O:26]3)[N:9]=2)[CH:5]=[N:4][CH:3]=1.[CH3:31][N:32]1[C:36](=O)[CH2:35][CH2:34][CH2:33]1>>[F:24][C:18]1[CH:19]=[CH:20][CH:21]=[C:22]([F:23])[C:17]=1[C:14]1[CH:15]=[C:16]2[C:11](=[CH:12][CH:13]=1)[N:10]([CH:25]1[CH2:30][CH2:29][CH2:28][CH2:27][O:26]1)[N:9]=[C:8]2[C:6]1[CH:5]=[N:4][CH:3]=[C:2]([N:32]2[CH2:31][CH2:36][CH:35]=[CH:34][CH2:33]2)[N:7]=1Participants
Procedure
A slurry of 3-(6-chloropyrazin-2-yl)-5-(2,6-difluorophenyl)-1-(tetrahydro-2H-pyran-2-yl)-1H-indazole (0.500 g, 1.171 mmol) and 5-(2,6-difluorophenyl)-3-(6-(5,6-dihydropyridin-1(2H)-yl)pyrazin-2-yl)-1-(tetrahydro-2H-pyran-2-yl)-1H-indazole (0.461 g, 0.974 mmol, 83% yield) in 2 mL NMP was sealed and heated to 120° C. The reaction became an orange/brown solution. After 1 h, the reaction was complete. The reaction was partitioned between water and EtOAc. The organic layer was washed with water once, saturated aqueous NaCl once, and the organics were dried over anhydrous Na2SO4, filtered, and concentrated in vacuo. The material was treated with DCM and purified by silica gel chromatography using 0-40% EtOAc/hexane. The desired fractions were concentrated to afford 5-(2,6-difluorophenyl)-3-(6-(5,6-dihydropyridin-1(2H)-yl)pyrazin-2-yl)-1-(tetrahydro-2H-pyran-2-yl)-1H-indazole (0.461 g, 0.974 mmol, 83% yield) as a yellow solid. MS (ESI, pos. ion) m/z: 474 (M+1).
Sources & evidence
- ORD record
- ord-5b4f17f9e39a4b32a464c248d90b2306
- Source dataset
- uspto-grants-2015_07
- Patent number
- US09090593B2
Reaction notes
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