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

HRID 419470Notes

Reaction equation

HRID 419470 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]([N:45]2[CH2:50][CH2:49][N:48]([CH2:51][CH2:52][S:53]([CH3:56])(=[O:55])=[O:54])[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]([N:45]4[CH2:50][CH2:49][N:48]([CH2:51][CH2:52][S:53]([CH3:56])(=[O:55])=[O:54])[CH2:47][CH2:46]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 666497312-(Methyloxy)-4-{4-[2-(methylsulfonyl)ethyl]-1-piperazinyl}aniline

Product 1

HCID 59452646N-(2,6-difluorophenyl)-2-(methyloxy)-5-(3-{2-[(2-(methyloxy)-4-{4-[2-(methylsulfonyl)ethyl]-1-piperazinyl]phenyl)amino}-4-pyrimidinyl}imidazo[1,2-a]pyridin-2-yl)benzamideYield 60%

Reagents, catalysts & solvents 2

HCID 3776IsopropanolSolventHCID 6344DichloromethaneSolvent

Conditions

Temperature
130 °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), 2-(methyloxy)-4-{4-[2-(methylsulfonyl)ethyl]-1-piperazinyl}aniline (57 mg, 0.18 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 130° C. for 72 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 (83 mg, 0.108 mmol, 59%). 1H NMR (400 MHz, DMSO-d6) δ ppm 9.77 (s, 1H), 9.35 (s, 1H), 8.44 (s, 1H), 8.19 (d, J=5.31 Hz, 1H), 8.09 (d, J=2.20 Hz, 1H), 7.76 (dd, J=8.52, 2.11 Hz, 1H), 7.68 (d, J=8.97 Hz, 1H), 7.33-7.44 (m, 3H), 7.27 (d, J=8.61 Hz, 1H), 7.17 (t, J=8.06 Hz, 2H), 6.93 (t, J=6.87 Hz, 1H), 6.67 (d, J=2.38 Hz, 1H), 6.51 (d, J=5.31 Hz, 1H), 6.48 (dd, J=8.79, 2.56 Hz, 1H), 3.97 (s, 3H), 3.79 (s, 3H), 3.30-3.35 (m, 2H), 3.11-3.20 (m, 4H), 3.03 (s, 3H), 2.74 (t, J=6.78 Hz, 2H), 2.52-2.62 (m, 4H). MS (ESI): 769 [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-1f494925360f4223a6c6195e16d13143
Source dataset
uspto-grants-2012_01
Patent number
US08093239B2

Reaction notes

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