Cesium carbonate → 3-{[6-(azetidin-1-ylcarbonyl)pyridin-3-yl]oxy}-5-(cyclopentyloxy)-N-(1-methyl-1H-pyrazol-3-yl)benzamide

HRID 1990214Notes

Reaction equation

[CH:1]1([O:6][C:7]2[CH:8]=[C:9]([CH:19]=[C:20]([OH:22])[CH:21]=2)[C:10]([NH:12][C:13]2[CH:17]=[CH:16][N:15]([CH3:18])[N:14]=2)=[O:11])[CH2:5][CH2:4][CH2:3][CH2:2]1.[N:23]1([C:27]([C:29]2[CH:34]=[CH:33][C:32](Br)=[CH:31][N:30]=2)=[O:28])[CH2:26][CH2:25][CH2:24]1.C(=O)([O-])[O-].[Cs+].[Cs+]>CC(N(C)C)=O>[N:23]1([C:27]([C:29]2[N:30]=[CH:31][C:32]([O:22][C:20]3[CH:19]=[C:9]([CH:8]=[C:7]([O:6][CH:1]4[CH2:5][CH2:4][CH2:3][CH2:2]4)[CH:21]=3)[C:10]([NH:12][C:13]3[CH:17]=[CH:16][N:15]([CH3:18])[N:14]=3)=[O:11])=[CH:33][CH:34]=2)=[O:28])[CH2:26][CH2:25][CH2:24]1

Participants

Conditions

Temperature: 200 °C

Procedure

3-(Cyclopentyloxy)-5-hydroxy-N-(1-methyl-1H-pyrazol-3-yl)benzamide (200 mg, 0.67 mmol), 2-(azetidin-1-ylcarbonyl)-5-bromopyridine (193 mg, 0.80 mmol), bromotris(triphenylphosphine)copper (186 mg, 0.2 mmol) and caesium carbonate (230 mg, 0.70 mmol) were dissolved/suspended in DMA (3.5 mL). The reaction mixture was heated for 40 mins at 200° C. in a microwave reactor then allowed to cool, filtered and reduced in vacuo. The crude product was purified by chromatography on silica, eluting with 0-100% ethyl acetate in isohexane, to give the desired compound as a slightly yellow foam (176 mg). 1H NMR δ (d6-DMSO): 1.61 (m, 2H), 1.73 (m, 4H), 1.94 (m, 2H), 2.28 (m, 2H), 3.78 (s, 3H), 4.08 (t, 2H), 4.59 (t, 2H), 4.95 (m, 1H), 6.56 (d, 1H), 6.88 (t, 1H), 7.28 (m, 1H), 7.43 (t, 1H), 7.56 (m, 1H), 7.59 (d, 1H), 7.99 (d, 1H), 8.41 (m, 1H), 10.85 (s, 1H); m/z 462 (M+H)+

Workup

temperatureto cool
filtrationfiltered
customThe crude product was purified by chromatography on silica
washeluting with 0-100% ethyl acetate in isohexane

Sources & evidence

ORD record: ord-c19c2b9f523b47e282d6c5d391460f40
Source dataset: uspto-grants-2010_01
DOI: 10.6084/m9.figshare.5104873.v1
Patent number: US07642259B2

Reaction notes

Loading…