Ozone → HCID 18926161, compound

HRID 365028Notes

Reaction equation

HRID 365028 reaction equation
[CH3:1][O:2][C:3]([O:8][CH3:9])([CH2:6]C)[CH:4]=[CH2:5].[O:10]=[O+][O-]>CO>[CH3:9][O:8][C:3]([O:2][CH3:1])([CH2:4][CH3:5])[CH:6]=[O:10]

Participants

4

Reactant 2

HCID 24823OzoneHCID 54116956HCID 54116956, compound

Product 1

HCID 18926161HCID 18926161, compoundYield 85.4%

Reagents, catalysts & solvents 1

HCID 887MethanolSolvent

Procedure

1 liter of a solution of 195 g (1.5 moles) of ethylacrolein dimethylacetal in methanol is reacted with ozone at -25° C. to -30° C. analogously to the procedure indicated in Example 1, and is then hydrogenated. The absorption of H2 is 29.55 standard liters (87.8% of theory). After working up, which is carried out analogously to the instructions in Example 2 by removing the catalyst, treating the reaction solution with an acid ion exchanger, distilling off the solvent and rectifying the reaction product, 169 g of ethylglyoxal dimethylacetal boiling at 52° C./15 are obtained, corresponding to a yield of 85.4% of theory.

Workup

  1. customThe absorption of H2
  2. customby removing the catalyst
  3. additiontreating the reaction solution with an acid ion exchanger
  4. distillationdistilling off the solvent
  5. customare obtained, corresponding to a yield of 85.4% of theory

Sources & evidence

ORD record
ord-9f57a26348ed4c6994c008dc675ea961
Source dataset
uspto-grants-1986_08
Patent number
US04607126

Reaction notes

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