Dimethyl Sulfoxide → 4-Methoxyphenylacetaldehyde

HRID 2069621Notes

Reaction equation

HRID 2069621 reaction equation
CS(C)=O.C(Cl)(=O)C(Cl)=O.[CH3:11][O:12][C:13]1[CH:18]=[CH:17][C:16]([CH2:19][CH2:20][OH:21])=[CH:15][CH:14]=1.C(N(CC)CC)C>ClCCl.O>[CH3:11][O:12][C:13]1[CH:18]=[CH:17][C:16]([CH2:19][CH:20]=[O:21])=[CH:15][CH:14]=1

Participants

7

Reactant 4

HCID 679Dimethyl SulfoxideHCID 8471TriethylamineHCID 65578Oxalyl chlorideHCID 697054-Methoxyphenethyl alcohol

Product 1

HCID 797824-MethoxyphenylacetaldehydeYield 44.4%

Reagents, catalysts & solvents 2

HCID 962WaterSolventHCID 6344DichloromethaneSolvent3×

Procedure

DMSO (5.2 mL, 72.6 mmol) in dichloromethane (14.5 mL) was added to a solution of oxalyl chloride (3.1 mL, 36.3 mmol) in dichloromethane (83 mL) at −70° C. under nitrogen. After stirring for 5 minutes, 2-(4-methoxyphenyl)ethanol (5.0 g, 33.0 mmol) dissolved in dichloromethane (33 mL) was added drop wise (20 min). Stirring was continued for an additional 20 min. and triethyl amine (9.7 mL, 69.3 mmol) was added, and the reaction mixture was stirred and warmed slowly to room temperature for 1 hour. The reaction mixture was diluted with water. The organic layer was separated, dried over sodium sulfate, filtered and concentrated in vacuo to provide 2-(4-methoxyphenyl)acetaldehyde (553) (2.2 g, 44.4%) as an oil residue.

Workup

  1. additionwas added drop wise (20 min)
  2. stirringStirring
  3. waitwas continued for an additional 20 min.
  4. stirringthe reaction mixture was stirred
  5. customThe organic layer was separated
  6. dry with materialdried over sodium sulfate
  7. filtrationfiltered
  8. concentrationconcentrated in vacuo

Sources & evidence

ORD record
ord-1394bb8a0d664c25a9571dbbe2f61c0b
Source dataset
uspto-grants-2012_10
Patent number
US08299117B2

Reaction notes

Loading…