1,2-Dimethoxyethane → HCID 86704965, compound

HRID 572152Notes

Reaction equation

HRID 572152 reaction equation
[OH:1][C:2]1[CH:7]=[CH:6][C:5](B(O)O)=[CH:4][CH:3]=1.Br[C:12]1[C:13]2[N:14]([CH:18]=[C:19]([CH3:21])[N:20]=2)[CH:15]=[CH:16][CH:17]=1.C(=O)([O-])[O-].[Na+].[Na+].COCCOC>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.O>[CH3:21][C:19]1[N:20]=[C:13]2[C:12]([C:5]3[CH:6]=[CH:7][C:2]([OH:1])=[CH:3][CH:4]=3)=[CH:17][CH:16]=[CH:15][N:14]2[CH:18]=1

Participants

7

Reactant 4

HCID 80711,2-DimethoxyethaneHCID 10340Sodium CarbonateHCID 27343604-Hydroxyphenylboronic acidHCID 708132488-bromo-2-methylimidazo[1,2-a]pyridine

Product 1

HCID 86704965HCID 86704965, compoundYield 25.7%

Reagents, catalysts & solvents 2

HCID 178418397HCID 178418397, compoundCatalystHCID 962WaterSolvent2×

Procedure

A mixture of 4-hydroxyphenylboronic acid (1.1 g), 8-bromo-2-methylimidazo[1,2-a]pyridine (1.7 g), tetrakis(triphenylphosphine)palladium(0) (0.28 g), sodium carbonate (3.0 g), DME (35 ml) and water (7 ml) was heated under reflux overnight under an argon atmosphere. The reaction mixture was poured into water, and the mixture was extracted with ethyl acetate. The extract was washed with saturated brine, dried over anhydrous magnesium sulfate, and the solvent was evaporated under reduced pressure. The residue was purified by silica gel column chromatography (hexane/ethyl acetate) and recrystallized from ethyl acetate to give the title compound (0.46 g).

Workup

  1. temperaturewas heated
  2. temperatureunder reflux overnight under an argon atmosphere
  3. extractionthe mixture was extracted with ethyl acetate
  4. washThe extract was washed with saturated brine
  5. dry with materialdried over anhydrous magnesium sulfate
  6. customthe solvent was evaporated under reduced pressure
  7. customThe residue was purified by silica gel column chromatography (hexane/ethyl acetate)
  8. customrecrystallized from ethyl acetate

Sources & evidence

ORD record
ord-bb483f2fcd7342b9b81b13c5c0ff76ec
Source dataset
uspto-grants-2015_05
Patent number
US09029388B2

Reaction notes

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