Cesium carbonate → 3-{[3-chloro-5-(pyrrolidin-1-ylcarbonyl)pyridin-2-yl]oxy}-5-[(1-methylethyl)oxy]-N-(5-methylpyrazin-2-yl)benzamide

HRID 1011793Notes

Reaction equation

C(=O)([O-])[O-].[Cs+].[Cs+].[OH:7][C:8]1[CH:9]=[C:10]([CH:21]=[C:22]([O:24][CH:25]([CH3:27])[CH3:26])[CH:23]=1)[C:11]([NH:13][C:14]1[CH:19]=[N:18][C:17]([CH3:20])=[CH:16][N:15]=1)=[O:12].Cl[C:29]1[C:34]([Cl:35])=[CH:33][C:32]([C:36]([N:38]2[CH2:42][CH2:41][CH2:40][CH2:39]2)=[O:37])=[CH:31][N:30]=1>C(#N)C>[Cl:35][C:34]1[C:29]([O:7][C:8]2[CH:9]=[C:10]([CH:21]=[C:22]([O:24][CH:25]([CH3:27])[CH3:26])[CH:23]=2)[C:11]([NH:13][C:14]2[CH:19]=[N:18][C:17]([CH3:20])=[CH:16][N:15]=2)=[O:12])=[N:30][CH:31]=[C:32]([C:36]([N:38]2[CH2:42][CH2:41][CH2:40][CH2:39]2)=[O:37])[CH:33]=1

Participants

Conditions

Temperature: 120 °C

Procedure

Cesium carbonate (782 mg, 2.4 mmol) was added to a solution of 3-hydroxy-5-[(1-methylethyl)oxy]-N-(5-methylpyrazin-2-yl)benzamide (230 mg, 0.8 mmol) and 2,3-dichloro-5-(pyrrolidin-1-ylcarbonyl)pyridine (234 mg, 0.96 mmol) in acetonitrile (5 mL) and the stirred mixture heated in a microwave reactor at 120° C. for 2 hours. The mixture was cooled to RT and the acetonitrile evaporated in vacuo. The residue was partitioned between water (25 mL) and ethyl acetate (50 mL), the organic layer washed with brine, dried (MgSO4) and evaporated to a residue which was chromatographed on silica, eluting with 75% ethyl acetate in isohexane, to give the desired compound (290 mg).

Workup

temperatureThe mixture was cooled to RT
customthe acetonitrile evaporated in vacuo
customThe residue was partitioned between water (25 mL) and ethyl acetate (50 mL)
washthe organic layer washed with brine
dry with materialdried (MgSO4)
customevaporated to a residue which
customwas chromatographed on silica
washeluting with 75% ethyl acetate in isohexane

Sources & evidence

ORD record: ord-cfc939f6b8eb41d1bd401b27752587f4
Source dataset: uspto-grants-2011_07
DOI: 10.6084/m9.figshare.5104873.v1
Patent number: US07977328B2

Reaction notes

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