3-Methyl-2-buten-1-OL → 3,7-Dimethylocta-2,6-Dienal

HRID 2397193Notes

Reaction equation

HRID 2397193 reaction equation
[CH3:1][C:2]([CH3:6])=[CH:3][CH2:4][OH:5].[CH3:7][C:8]([CH3:12])=[CH:9][CH:10]=O>>[CH3:7][C:8](=[CH:9][CH2:10][CH2:1][C:2](=[CH:3][CH:4]=[O:5])[CH3:6])[CH3:12]

Participants

3

Reactant 2

HCID 111733-Methyl-2-buten-1-OLHCID 610203-Methyl-2-butenal

Product 1

HCID 88433,7-Dimethylocta-2,6-DienalYield 51%

Procedure

A mixture of 600 parts of 3-methyl-2-buten-1-ol and 300 parts of 3,3-dimethylacrolein is pumped through a reactor having a capacity of 150 parts by volume with a residence time of seven minutes. The reaction temperature is 250° C. and the presence is 150 atmospheres. The reaction mixture which has reacted is fractionally distilled and 91.5 parts of citral is obtained. This is equivalent to a yield of 51% of theory based on 3,3-dimethylacrolein at a conversion of 33%.

Workup

  1. customis pumped through a reactor
  2. customwith a residence time of seven minutes
  3. customis 250° C.
  4. customThe reaction mixture which has reacted
  5. distillationis fractionally distilled

Sources & evidence

ORD record
ord-586e95c216a048febd1c5670f9a38d63
Source dataset
uspto-grants-1977_05
Patent number
US04021411

Reaction notes

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