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

HRID 419492Notes

Reaction equation

HRID 419492 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][CH2:35][CH3:36])=[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.[CH2:37]([O:39][C:40]1[CH:46]=[C:45]([N:47]2[CH2:52][CH2:51][N:50]([CH2:53][CH2:54][S:55]([CH3:58])(=[O:57])=[O:56])[CH2:49][CH2:48]2)[CH:44]=[CH:43][C:41]=1[NH2:42])[CH3:38].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:42][C:41]3[CH:43]=[CH:44][C:45]([N:47]4[CH2:52][CH2:51][N:50]([CH2:53][CH2:54][S:55]([CH3:58])(=[O:57])=[O:56])[CH2:49][CH2:48]4)=[CH:46][C:40]=3[O:39][CH2:37][CH3:38])[N:7]=2)[CH:18]=[CH:19][C:20]=1[O:34][CH2:35][CH3:36]

Participants

7

Reactant 4

HCID 6101p-Toluenesulfonic acidHCID 10942334Sodium MethoxideHCID 594529415-[3-(2-chloro-4-pyrimidinyl)imidazo[1,2-a]pyridin-2-yl]-N-(2,6-difluorophenyl)-2-(ethyloxy)benzamideHCID 666497432-(Ethyloxy)-4-{4-[2-(methylsulfonyl)ethyl)-1-piperazinyl}aniline

Product 1

HCID 59452696N-(2,6-difluorophenyl)-2-(ethyloxy)-5-(3-{2-[(2-(ethyloxy)-4-{4-[2-(methylsulfonyl)ethyl)-1-piperazinyl}phenyl)amino]-4-pyrimidinyl}imidazo[1,2-a]pyridin-2-yl)benzamideYield 57%

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-(ethyloxy)benzamide (Intermediate Example 6) (150 mg, 0.3 mmol), 2-(ethyloxy)-4-{4-[2-(methylsulfonyl)ethyl]-1-piperazinyl}aniline (Example 143, step C) (87 mg, 0.27 mmol), and p-toluenesulfonic acid (135 mg, 0.71 mmol) were weighed into a 20 mL vial. 10 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 5 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 (121 mg, 0.15 mmol, 57%). 1H NMR (400 MHz, DMSO-d6) δ ppm 9.73 (s, 1H), 9.31 (s, 1H), 8.35 (s, 1H), 8.21 (d, J=5.31 Hz, 1H), 8.03 (d, J=2.01 Hz, 1H), 7.73 (dd, J=8.70, 2.11 Hz, 1H), 7.68 (d, J=8.97 Hz, 1H), 7.39-7.47 (m, 2H), 7.32-7.39 (m, 1H), 7.24 (d, J=8.79 Hz, 1H), 7.18 (t, J=8.06 Hz, 2H), 6.92 (t, J=7.05 Hz, 1H), 6.66 (d, J=2.38 Hz, 1H), 6.53 (d, J=5.31 Hz, 1H), 6.44-6.49 (m, 1H), 4.24 (q, J=6.90 Hz, 2H), 4.05 (q, J=6.96 Hz, 2H), 3.30-3.34 (m, 2H), 3.08-3.14 (m, 4H), 3.02 (s, 3H), 2.74 (t, J=6.87 Hz, 2H), 2.54-2.59 (m, 4H), 1.41 (t, J=6.87 Hz, 3H), 1.23 (t, J=6.96 Hz, 3H). MS (ESI): 797 [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-9edfe544a5b44a6180306abccd32fd85
Source dataset
uspto-grants-2012_01
Patent number
US08093239B2

Reaction notes

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