Cesium carbonate → HCID 16039834, compound

HRID 1175941Notes

Reaction equation

HRID 1175941 reaction equation
C(=O)([O-])[O-].[Cs+].[Cs+].[OH:7][C:8]1[CH:9]=[C:10]([CH:21]=[C:22]([O:24][C@@H:25]([CH3:29])[CH2:26][O:27][CH3:28])[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].[N:30]1([C:34]([C:36]2[CH:41]=[CH:40][C:39](Br)=[CH:38][N:37]=2)=[O:35])[CH2:33][CH2:32][CH2:31]1>CC(N(C)C)=O>[N:30]1([C:34]([C:36]2[N:37]=[CH:38][C:39]([O:7][C:8]3[CH:9]=[C:10]([CH:21]=[C:22]([O:24][C@@H:25]([CH3:29])[CH2:26][O:27][CH3:28])[CH:23]=3)[C:11]([NH:13][C:14]3[CH:19]=[N:18][C:17]([CH3:20])=[CH:16][N:15]=3)=[O:12])=[CH:40][CH:41]=2)=[O:35])[CH2:33][CH2:32][CH2:31]1

Participants

5

Reactant 3

HCID 10796Cesium carbonateHCID 536296172-(Azetidin-1-ylcarbonyl)-5-bromopyridineHCID 59127168(S)-3-hydroxy-5-(1-methoxypropan-2-yloxy)-N-(5-methylpyrazin-2-yl)benzamide

Product 1

HCID 16039834HCID 16039834, compound

Reagents, catalysts & solvents 1

HCID 31374DimethylacetamideSolvent

Conditions

Temperature
160 °C

Procedure

Cesium carbonate (489 mg, 1.5 mmol) was added to a solution of 3-hydroxy-5-{[(1S)-1-methyl-2-(methyloxy)ethyl]oxy}-N-(5-methylpyrazin-2-yl)benzamide (159 mg, 0.5 mmol) and 2-(azetidin-1-ylcarbonyl)-5-bromopyridine (181 mg, 0.75 mmol) and bromotris(triphenylphosphine)copper (93 mg, 0.1 mmol) in DMA (5 mL) and the stirred mixture heated at 160° C. in a microwave reactor for 4 hours. The mixture was cooled to RT and ambient pressure, partitioned between water (75 mL) and ethyl acetate (50 mL), the organic layer washed with brine, dried (MgSO4) and evaporated in vacuo. The residue was chromatographed on silica, eluting with ethyl acetate, to give the desired compound that was crystallised from ether (45 mg, melting onset 113.8° C.). The compound may also be crystallised from ethyl acetate, giving rise to an alternative crystalline form (melting onset 132.7° C.). 1H NMR δ (CDCl3): 1.3 (d, 3H), 2.3 (m, 2H), 2.5 (s, 3H), 3.3 (s, 3H), 3.45-3.55 (m, 2H), 4.2 (t, 2H), 4.55 (m, 1H), 4.65 (t, 2H), 6.75 (d, 1H), 7.05 (d, 1H), 7.25 (s, 1H), 7.3 (d, 1H), 8.0 (s, 1H), 8.05 (d, 1H), 8.25 (d, 1H), 8.3 (s, 1H) and 9.45 (s, 1H). m/z 478 (M+H)+.

Workup

  1. temperatureThe mixture was cooled to RT
  2. customambient pressure, partitioned between water (75 mL) and ethyl acetate (50 mL)
  3. washthe organic layer washed with brine
  4. dry with materialdried (MgSO4)
  5. customevaporated in vacuo
  6. customThe residue was chromatographed on silica
  7. washeluting with ethyl acetate

Sources & evidence

ORD record
ord-5753510a1e9d423fac824174bfc656f3
Source dataset
uspto-grants-2010_11
Patent number
US07842694B2

Reaction notes

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