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

HRID 419499Notes

Reaction equation

HRID 419499 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]=[C:19]([CH:31]=[CH:32][CH:33]=2)[C:20]([NH:22][C:23]2[C:28]([F:29])=[CH:27][CH:26]=[CH:25][C:24]=2[F:30])=[O:21])[CH:5]=[CH:4][N:3]=1.[CH2:34]([O:36][C:37]1[CH:43]=[C:42]([CH2:44][CH2:45][N:46]2[CH2:51][CH2:50][N:49]([CH3:52])[CH2:48][CH2:47]2)[CH:41]=[CH:40][C:38]=1[NH2:39])[CH3:35].C1(C)C=CC(S(O)(=O)=O)=CC=1.C[O-].[Na+]>C(Cl)Cl.CC(O)C>[F:30][C:24]1[CH:25]=[CH:26][CH:27]=[C:28]([F:29])[C:23]=1[NH:22][C:20](=[O:21])[C:19]1[CH:31]=[CH:32][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:39][C:38]3[CH:40]=[CH:41][C:42]([CH2:44][CH2:45][N:46]4[CH2:47][CH2:48][N:49]([CH3:52])[CH2:50][CH2:51]4)=[CH:43][C:37]=3[O:36][CH2:34][CH3:35])[N:7]=2)[CH:18]=1

Participants

7

Reactant 4

HCID 6101p-Toluenesulfonic acidHCID 10942334Sodium MethoxideHCID 594528212-(Ethyloxy)-4-[2-(4-methyl-1-piperazinyl)ethyl]anilineHCID 594529693-[3-(2-chloro-4-pyrimidinyl)imidazo[1,2-a]pyridin-2-yl]-N-(2,6-difluorophenyl)-benzamide

Product 1

HCID 59452973N-(2,6-difluorophenyl)-3-{3-[2-({2-(ethyloxy)-4-[2-(4-methyl-1-piperazinyl)ethyl]-phenyl}amino)-4-pyrimidinyl]imidazo[1,2-a]pyridin-2-yl}benzamideYield 56%

Reagents, catalysts & solvents 2

HCID 3776IsopropanolSolventHCID 6344DichloromethaneSolvent

Conditions

Temperature
130 °C

Procedure

3-[3-(2-Chloro-4-pyrimidinyl)imidazo[1,2-a]pyridin-2-yl]-N-(2,6-difluorophenyl)-benzamide (Intermediate Example 1) (100 mg, 0.22 mmol), 2-(ethyloxy)-4-[2-(4-methyl-1-piperazinyl)ethyl]aniline (Example 146, step D) (46 mg, 0.17 mmol), and p-toluenesulfonic acid (99 mg, 0.52 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 (67 mg, 0.09 mmol, 56%); 1H NMR (400 MHz, DMSO-d6) δ ppm 10.21 (s, 1H), 9.34 (s, 1H), 8.40 (s, 1H), 8.34 (s, 1H), 8.27 (s, 1H), 8.02 (s, 1H), 7.80 (s, 1H), 7.73 (s, 1H), 7.65 (s, 1H), 7.59 (s, 1H), 7.46 (s, 1H), 7.38 (s, 1H), 7.18 (s, 2H), 6.96 (s, 2H), 6.72 (s, 1H), 6.46 (s, 1H), 4.02-4.11 (m, 2H), 2.60-2.71 (m, 2H), 2.25-2.32 (m, 10H), 2.12 (s, 3H), 1.26 (s, 3H). MS (ESI): 689 [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-31269d6f804e4233ab0f6bbdce39b79f
Source dataset
uspto-grants-2012_01
Patent number
US08093239B2

Reaction notes

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