Ethylene Glycol → 2-(4-Nitrophenyl)-1,3-dioxolane

HRID 1097042Notes

Reaction equation

HRID 1097042 reaction equation
[N+:1]([C:4]1[CH:11]=[CH:10][C:7]([CH:8]=[O:9])=[CH:6][CH:5]=1)([O-:3])=[O:2].[CH2:12](O)[CH2:13][OH:14].C1(C)C=CC(S(O)(=O)=O)=CC=1>C1(C)C=CC=CC=1>[N+:1]([C:4]1[CH:5]=[CH:6][C:7]([CH:8]2[O:14][CH2:13][CH2:12][O:9]2)=[CH:10][CH:11]=1)([O-:3])=[O:2]

Participants

5

Reactant 3

HCID 174Ethylene GlycolHCID 5414-NitrobenzaldehydeHCID 6101p-Toluenesulfonic acid

Product 1

HCID 2667962-(4-Nitrophenyl)-1,3-dioxolaneYield 92%

Reagents, catalysts & solvents 1

HCID 1140TolueneSolvent

Procedure

A stirred solution of p-nitrobenzaldehyde (101.5 g, 672 mmol), ethylene glycol (112 mL) and p-toluenesulfonic acid (12.8 g, 67.2 mmol) in toluene (800 mL) was heated in flask equipped with a Dean-Stark trap at 120° C. for 4 h. After cooling to room temperature, the reaction mixture was concentrated under reduced pressure. To the residue was added saturated aqueous sodium bicarbonate (800 mL) and this mixture was stirred at room temperature for 15 min. The resulting solid was isolated by filtration and dried under vacuum to give the title compound (121.8 g, 92% yield) as a yellow solid.

Workup

  1. customequipped with a Dean-Stark trap at 120° C. for 4 h
  2. concentrationthe reaction mixture was concentrated under reduced pressure
  3. additionTo the residue was added saturated aqueous sodium bicarbonate (800 mL)
  4. customThe resulting solid was isolated by filtration
  5. customdried under vacuum

Sources & evidence

ORD record
ord-04158c5df1e44d559024361bd3cf6de2
Source dataset
uspto-grants-2012_03
Patent number
US08138345B2

Reaction notes

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