Acetaldehyde → HCID 131713932, compound

HRID 1632780Notes

Reaction equation

HRID 1632780 reaction equation
[CH3:1][C:2]1[C:8]([OH:9])=[CH:7][CH:6]=[CH:5][C:3]=1[OH:4].[CH2:10]([OH:12])[CH3:11].C(=O)C>Cl.O>[CH3:1][C:2]1([CH2:11][CH:10]=[O:12])[C:8]([OH:9])=[CH:7][CH:6]=[CH:5][CH:3]1[OH:4]

Participants

6

Reactant 3

HCID 177AcetaldehydeHCID 702EthanolHCID 118432-Methylresorcinol

Product 1

HCID 131713932HCID 131713932, compound

Reagents, catalysts & solvents 2

HCID 313Hydrochloric AcidCatalystHCID 962WaterSolvent

Procedure

To a solution of 621 g. of 2-methylresorcinol in 1 l. of ethanol were added 209 g. of acetaldehyde and 0.5 ml. of 35% conc. hydrochloric acid as a catalyst. The resulting mixture was heated with stirring in an oil bath and, when the reaction mixture began to boil under reflux through exothermic reaction, heating was reduced and then heating under reflux was continued as it was for further 90 minutes. After completion of the reaction, the reaction mixture was poured into 5 l. of a cold water with stirring to give a pale brown powdery resin.

Workup

  1. temperatureThe resulting mixture was heated
  2. temperatureunder reflux through exothermic reaction
  3. temperatureheating
  4. temperatureheating
  5. temperatureunder reflux
  6. customAfter completion of the reaction
  7. additionthe reaction mixture was poured into 5 l
  8. customto give a pale brown powdery resin

Sources & evidence

ORD record
ord-a12b7918644f4fd68909d131c0d58321
Source dataset
uspto-grants-1984_10
Patent number
US04477553

Reaction notes

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