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

HRID 419518Notes

Reaction equation

HRID 419518 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.[CH3:34][CH2:35][O:36][C:37]1[CH:43]=[C:42]([CH:44]2[CH2:49][CH2:48][N:47]([CH2:50][CH2:51][CH3:52])[CH2:46][CH2:45]2)[CH:41]=[CH:40][C:38]=1[NH2:39].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]([CH:44]4[CH2:45][CH2:46][N:47]([CH2:50][CH2:51][CH3:52])[CH2:48][CH2:49]4)=[CH:43][C:37]=3[O:36][CH2:35][CH3:34])[N:7]=2)[CH:18]=1

Participants

7

Reactant 4

HCID 6101p-Toluenesulfonic acidHCID 10942334Sodium MethoxideHCID 594526052-(2-Ethyloxy)-4-(1-propyl-4-piperidinyl)anilineHCID 594529693-[3-(2-chloro-4-pyrimidinyl)imidazo[1,2-a]pyridin-2-yl]-N-(2,6-difluorophenyl)-benzamide

Product 1

HCID 59452752N-(2,6-difluorophenyl)-3-[3-(2-{[2-(ethyloxy)-4-(1-propyl-4-piperidinyl)phenyl]amino}-4-pyrimidinyl)imidazo[1,2-a]pyridin-2-yl]benzamideYield 58.9%

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-(2-ethyloxy)-4-(1-propyl-4-piperidinyl)aniline (Example 154, step E) (51 mg, 0.19 mmol), and p-toluenesulfonic acid (98 mg, 0.51 mmol) were weighed into a 20 mL vial. 7 mL of iPrOH was added and the mixture was heated to 130° C. for 48 h. The mixture was transferred to a 50 mL round bottom and neutralized with 3 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 (32 mg, 0.112 mmol, 24%). 1H NMR (400 MHz, DMSO-d6) δ ppm 10.23 (s, 1H), 9.36 (d, J=6.78 Hz, 1H), 8.41 (s, 1H), 8.33 (s, 1H), 8.27 (d, J=5.31 Hz, 1H), 8.04 (d, J=7.87 Hz, 1H), 7.80 (d, J=7.87 Hz, 1H), 7.73 (d, J=8.97 Hz, 1H), 7.65 (d, J=8.06 Hz, 1H), 7.59 (t, J=7.78 Hz, 1H), 7.42-7.49 (m, 1H), 7.34-7.42 (m, 1H), 7.19 (t, J=8.06 Hz, 2H), 6.98 (t, J=6.78 Hz, 1H), 6.93 (s, 1H), 6.76 (d, J=8.42 Hz, 1H), 6.55 (d, J=5.13 Hz, 1H), 4.08 (q, J=6.90 Hz, 2H), 2.88-3.00 (m, 2H), 2.38-2.45 (m, 1H), 2.19-2.30 (m, 2H), 1.87-1.99 (m, 2H), 1.63-1.75 (m, 4H), 1.39-1.49 (m, 2H), 1.26 (t, J=6.96 Hz, 3H), 0.84 (t, J=7.23 Hz, 3H). MS (ESI): 688 [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-34701b7a5d10448d9265aefe27c1a8ca
Source dataset
uspto-grants-2012_01
Patent number
US08093239B2

Reaction notes

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