Dimethylformamide → HCID 3839920, compound

HRID 1294097Notes

Reaction equation

HRID 1294097 reaction equation
[CH2:1]([O:3][C:4]1[CH:11]=[CH:10][C:9]([OH:12])=[CH:8][C:5]=1[CH:6]=[O:7])[CH3:2].[CH2:13](Br)[C:14]1[CH:19]=[CH:18][CH:17]=[CH:16][CH:15]=1.C(=O)([O-])[O-].[K+].[K+].CN(C)C=O>O>[CH2:13]([O:12][C:9]1[CH:10]=[CH:11][C:4]([O:3][CH2:1][CH3:2])=[C:5]([CH:8]=1)[CH:6]=[O:7])[C:14]1[CH:19]=[CH:18][CH:17]=[CH:16][CH:15]=1

Participants

6

Reactant 4

HCID 6228DimethylformamideHCID 7498Benzyl BromideHCID 11430Potassium CarbonateHCID 3572385HCID 3572385, compound

Product 1

HCID 3839920HCID 3839920, compoundYield 88.2%

Reagents, catalysts & solvents 1

HCID 962WaterSolvent

Conditions

Temperature
90 °C

Procedure

A mixture of 2-ethoxy-5-hydroxybenzaldehyde (3.72 g), benzyl bromide (5.75 g), anhydrous potassium carbonate (3.10 g) and N,N-dimethylformamide (50 mL) was stirred at 90° C. for 3 hrs. The reaction mixture was poured into water and extracted with ethyl acetate. The organic layer was washed with saturated brine, dried over anhydrous magnesium sulfate, and concentrated. The obtained residue was subjected to silica gel column chromatography to give crystals (5.06 g, 88%) of 5-benzyloxy-2-ethoxybenzaldehyde from a fraction eluted with ethyl acetate-hexane (1:4, v/v). Redrystallization from ethyl, acetate-hexane gave colorless prism crystals. melting point: 81-82° C.

Workup

  1. extractionextracted with ethyl acetate
  2. washThe organic layer was washed with saturated brine
  3. dry with materialdried over anhydrous magnesium sulfate
  4. concentrationconcentrated

Sources & evidence

ORD record
ord-2ccfae50c58e4bb69850306fd79b324f
Source dataset
uspto-grants-2007_07
Patent number
US07238716B2

Reaction notes

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