Cesium carbonate → N-{4-[5-(2-chloro-5-formylphenyl)-4-(1-{[2-(trimethylsilyl)ethoxy]methyl}-1H-1,2,4-triazol-3-yl)-2-furyl]-5-methylpyridin-2-yl}acetamide

HRID 537068Notes

Reaction equation

HRID 537068 reaction equation
Br[C:2]1[O:6][C:5]([C:7]2[C:12]([CH3:13])=[CH:11][N:10]=[C:9]([NH:14][C:15](=[O:17])[CH3:16])[CH:8]=2)=[CH:4][C:3]=1[C:18]1[N:22]=[CH:21][N:20]([CH2:23][O:24][CH2:25][CH2:26][Si:27]([CH3:30])([CH3:29])[CH3:28])[N:19]=1.[Cl:31][C:32]1[CH:37]=[CH:36][C:35]([CH:38]=[O:39])=[CH:34][C:33]=1B(O)O.C(=O)([O-])[O-].[Cs+].[Cs+]>O1CCOCC1.O.C1C=CC([P]([Pd]([P](C2C=CC=CC=2)(C2C=CC=CC=2)C2C=CC=CC=2)([P](C2C=CC=CC=2)(C2C=CC=CC=2)C2C=CC=CC=2)[P](C2C=CC=CC=2)(C2C=CC=CC=2)C2C=CC=CC=2)(C2C=CC=CC=2)C2C=CC=CC=2)=CC=1>[Cl:31][C:32]1[CH:37]=[CH:36][C:35]([CH:38]=[O:39])=[CH:34][C:33]=1[C:2]1[O:6][C:5]([C:7]2[C:12]([CH3:13])=[CH:11][N:10]=[C:9]([NH:14][C:15](=[O:17])[CH3:16])[CH:8]=2)=[CH:4][C:3]=1[C:18]1[N:22]=[CH:21][N:20]([CH2:23][O:24][CH2:25][CH2:26][Si:27]([CH3:30])([CH3:29])[CH3:28])[N:19]=1

Participants

7

Reactant 3

HCID 10796Cesium carbonateHCID 27632392-Chloro-5-formylphenylboronic acidHCID 66749395N-{4-[5-bromo-4-(1-{[2-(trimethylsilyl)ethoxy]methyl}-1H-1,2,4-triazol-3-yl)-2-furyl]-5-methylpyridin-2-yl}acetamide

Product 1

HCID 86666249N-{4-[5-(2-chloro-5-formylphenyl)-4-(1-{[2-(trimethylsilyl)ethoxy]methyl}-1H-1,2,4-triazol-3-yl)-2-furyl]-5-methylpyridin-2-yl}acetamideYield 83.6%

Reagents, catalysts & solvents 3

HCID 178418397HCID 178418397, compoundCatalystHCID 962WaterSolvent2×HCID 312751,4-DioxaneSolvent

Procedure

To a solution of N-{4-[5-bromo-4-(1-{[2-(trimethylsilyl)ethoxy]methyl}-1H-1,2,4-triazol-3-yl)-2-furyl]-5-methylpyridin-2-yl}acetamide (0.45 g, 0.91 mmol) in 1,4-dioxane (5 mL) was added water (1.2 mL), tetrakis(triphenylphosphine)palladium(0) (0.10 g, 0.091 mmol), (2-chloro-5-formylphenyl)boronic acid (0.22 g, 1.19 mmol) and cesium carbonate (0.89 g, 2.74 mmol). The mixture was allowed to stir and subjected to microwave irradiation at 150° C. for 20 min. The mixture was diluted with water and extracted with EtOAc. The organic solution was dried over MgSO4, filtered and concentrated. The residue was purified by column chromatography to give N-{4-[5-(2-chloro-5-formylphenyl)-4-(1-{[2-(trimethylsilyl)ethoxy]methyl}-1H-1,2,4-triazol-3-yl)-2-furyl]-5-methylpyridin-2-yl}acetamide (0.42 g, 83%). LCMS (FA): m/z=552.6 (M+H).

Workup

  1. customirradiation at 150° C. for 20 min
  2. extractionextracted with EtOAc
  3. dry with materialThe organic solution was dried over MgSO4
  4. filtrationfiltered
  5. concentrationconcentrated
  6. customThe residue was purified by column chromatography

Sources & evidence

ORD record
ord-3fc4f2c905974cddb7da35305f497182
Source dataset
uspto-grants-2014_10
Patent number
US08859768B2

Reaction notes

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