Pyridine → 2-Benzoyloxy-4-diethylaminobenzaldehyde

HRID 1040397Notes

Reaction equation

HRID 1040397 reaction equation
[CH2:1]([N:3]([CH2:13][CH3:14])[C:4]1[CH:11]=[CH:10][C:7]([CH:8]=[O:9])=[C:6]([OH:12])[CH:5]=1)[CH3:2].N1C=CC=CC=1.[C:21](Cl)(=[O:28])[C:22]1[CH:27]=[CH:26][CH:25]=[CH:24][CH:23]=1>ClCCl.C(OCC)(=O)C>[C:21]([O:12][C:6]1[CH:5]=[C:4]([N:3]([CH2:1][CH3:2])[CH2:13][CH3:14])[CH:11]=[CH:10][C:7]=1[CH:8]=[O:9])(=[O:28])[C:22]1[CH:27]=[CH:26][CH:25]=[CH:24][CH:23]=1

Participants

6

Reactant 3

HCID 1049PyridineHCID 7412Benzoyl chlorideHCID 872934-(Diethylamino)-2-hydroxybenzaldehyde

Product 1

HCID 47668892-Benzoyloxy-4-diethylaminobenzaldehydeYield 94%

Reagents, catalysts & solvents 2

HCID 6344DichloromethaneSolventHCID 8857Ethyl AcetateSolvent

Procedure

To a solution of 4-diethylamino-2-hydroxybenzaldehyde (300 mg, 1.55 mmol), pyridine (0.19 mL, 2.3 mmol) in 1.6 mL of dry dichloromethane was added benzoyl chloride (216 μL, 1.84 mmol) at 0° C. After being stirred at room temperature overnight, the reaction mixture was diluted with ethyl acetate. The mixture was washed with 1N HCl, saturated NaHCO3 aqueous solution, brine, and dried over MgSO4. After filtration, the filtrate was concentrated in vacuo, and the residue was purified by silica gel column chromatography (hexane/ethyl acetate=90/10 to 80/20) to obtain the title compound as a white solid (432 mg, 94%).

Workup

  1. washThe mixture was washed with 1N HCl, saturated NaHCO3 aqueous solution, brine
  2. dry with materialdried over MgSO4
  3. filtrationAfter filtration
  4. concentrationthe filtrate was concentrated in vacuo
  5. customthe residue was purified by silica gel column chromatography (hexane/ethyl acetate=90/10 to 80/20)

Sources & evidence

ORD record
ord-c85e36450890467ea9a51cef514dbe0d
Source dataset
uspto-grants-2013_10
Patent number
US08552220B2

Reaction notes

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