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

HRID 1439161Notes

Reaction equation

HRID 1439161 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-Dienal

Procedure

100 parts of 3-methyl-2-buten-1-ol and 50 parts of 3,3-dimethylacrolein are heated for ninety minutes at 200° C and a pressure of 40 atmospheres in a rocking autoclave having a capacity of 250 parts by volume. The reaction product is worked up by distillation. 12.5 parts of citral is obtained having a boiling pont of 104° C at 12 mm. The yield (based on 3,3-dimethylacrolein) is 53% of theory at a conversion of 26%.

Workup

  1. distillationThe reaction product is worked up by distillation

Sources & evidence

ORD record
ord-b41feadd4f5c4f22b9517e296fad60bd
Source dataset
uspto-grants-1977_11
Patent number
US04058536

Reaction notes

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