p-Toluenesulfonic acid → N-(2,6-difluorophenyl)-2-(methyloxy)-5-[3-(2-{[2-(methyloxy)-4-(1-propyl-4-piperidinyl)phenyl]amino}-4-pyrimidinyl)imidazo[1,2-a]pyridin-2-yl]benzamide

HRID 419476Notes

Reaction equation

HRID 419476 reaction equation
Cl[C:2]1[N:7]=[C:6]([C:8]2[N:12]3[CH:13]=[CH:14][CH:15]=[CH:16][C:11]3=[N:10][C:9]=2[C:17]2[CH:18]=[CH:19][C:20]([O:34][CH3:35])=[C:21]([CH:33]=2)[C:22]([NH:24][C:25]2[C:30]([F:31])=[CH:29][CH:28]=[CH:27][C:26]=2[F:32])=[O:23])[CH:5]=[CH:4][N:3]=1.[CH3:36][O:37][C:38]1[CH:44]=[C:43]([CH:45]2[CH2:50][CH2:49][N:48]([CH2:51][CH2:52][CH3:53])[CH2:47][CH2:46]2)[CH:42]=[CH:41][C:39]=1[NH2:40].C1(C)C=CC(S(O)(=O)=O)=CC=1.C[O-].[Na+]>C(Cl)Cl.CC(O)C>[F:32][C:26]1[CH:27]=[CH:28][CH:29]=[C:30]([F:31])[C:25]=1[NH:24][C:22](=[O:23])[C:21]1[CH:33]=[C:17]([C:9]2[N:10]=[C:11]3[CH:16]=[CH:15][CH:14]=[CH:13][N:12]3[C:8]=2[C:6]2[CH:5]=[CH:4][N:3]=[C:2]([NH:40][C:39]3[CH:41]=[CH:42][C:43]([CH:45]4[CH2:46][CH2:47][N:48]([CH2:51][CH2:52][CH3:53])[CH2:49][CH2:50]4)=[CH:44][C:38]=3[O:37][CH3:36])[N:7]=2)[CH:18]=[CH:19][C:20]=1[O:34][CH3:35]

Participants

7

Reactant 4

HCID 6101p-Toluenesulfonic acidHCID 10942334Sodium MethoxideHCID 594525905-(3-(2-chloropyrimidin-4-yl)imidazo[1,2-a]pyridin-2-yl)-N-(2,6-difluorophenyl)-2-methoxybenzamideHCID 598602732-Methoxy-4-(1-propylpiperidin-4-yl)aniline

Product 1

HCID 59452573N-(2,6-difluorophenyl)-2-(methyloxy)-5-[3-(2-{[2-(methyloxy)-4-(1-propyl-4-piperidinyl)phenyl]amino}-4-pyrimidinyl)imidazo[1,2-a]pyridin-2-yl]benzamideYield 68.4%

Reagents, catalysts & solvents 2

HCID 3776IsopropanolSolventHCID 6344DichloromethaneSolvent

Conditions

Temperature
120 °C

Procedure

5-[3-(2-Chloro-4-pyrimidinyl)imidazo[1,2-a]pyridin-2-yl]-N-(2,6-difluorophenyl)-2-(methyloxy)benzamide (Intermediate Example 2) (100 mg, 0.2 mmol), a different batch of 2-(methyloxy)-4-(1-propyl-4-piperidinyl)aniline (48 mg, 0.19 mmol), and p-toluenesulfonic acid (93 mg, 0.49 mmol) were weighed into a 20 mL vial. 7 mL of iPrOH was added and the mixture was heated to 120° C. for 24 h. The mixture was transferred to a 50 mL round bottom and neutralized with 2 mL of 0.5 N sodium methoxide. The solvent was rotovaped down. The residue was taken up in 10 mL of DCM. 1 g of silica gel was added. The solvent was rotovaped down and the pre-adsorbed solids were purified by flash chromatography to give the title compound (92 mg, 0.13 mmol, 68%). 1H NMR (400 MHz, DMSO-d6) δ ppm 9.77 (s, 1H), 9.37 (d, J=6.23 Hz, 1H), 8.50 (s, 1H), 8.24 (d, J=5.31 Hz, 1H), 8.10 (d, J=2.01 Hz, 1H), 7.76 (dd, J=8.61, 2.20 Hz, 1H), 7.66 (dd, J=18.77, 8.52 Hz, 2H), 7.34-7.45 (m, 2H), 7.27 (d, J=8.79 Hz, 1H), 7.17 (t, J=8.06 Hz, 2H), 6.92-6.99 (m, 2H), 6.78 (dd, J=8.06, 1.65 Hz, 1H), 6.58 (d, J=5.13 Hz, 1H), 3.97 (s, 3H), 3.81 (s, 3H), 2.87-2.97 (m, J=10.80 Hz, 2H), 2.39-2.46 (m, 1H), 2.17-2.27 (m, 2H), 1.86-1.97 (m, 2H), 1.64-1.75 (m, 4H), 1.38-1.48 (m, 2H), 0.84 (t, J=7.23 Hz, 3H). MS (ESI): 704 [M+H]+.

Workup

  1. addition1 g of silica gel was added
  2. customthe pre-adsorbed solids were purified by flash chromatography

Sources & evidence

ORD record
ord-6b4c9fd2d6ea42378d6a3ab6c2e03626
Source dataset
uspto-grants-2012_01
Patent number
US08093239B2

Reaction notes

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