1,4-Benzenedimethanol → Terephthalaldehyde

HRID 27848

Reaction equation

HRID 27848 reaction equation
[OH:1][CH2:2][C:3]1[CH:10]=[CH:9][C:6]([CH2:7][OH:8])=[CH:5][CH:4]=1>O1CCOCC1>[CH:4]1[C:3]([CH:2]=[O:1])=[CH:10][CH:9]=[C:6]([CH:7]=[O:8])[CH:5]=1

Participants

3

Reactant 1

HCID 115061,4-Benzenedimethanol

Product 1

HCID 12173TerephthalaldehydeYield 63%

Reagents, catalysts & solvents 1

HCID 312751,4-DioxaneSolvent

Procedure

Using a similar method to Example 1, a mixture of 200 parts of 4-(hydroxymethyl)-benzyl alcohol and 400 parts of dioxane with 290 parts of air is passed per hour over the catalyst at 600° C. and 1.1 bar. The residence time is 0.05 second and the throughput is 0.3 tonne/m2.h. 124 parts of terephthaldialdehyde (in the form of a 22 percent strength by weight solution) are obtained per hour, corresponding to a yield of 63% of theory. The conversion is 92 percent and the space-time yield is 6 grams of terephthaldialdehyde per cm3 of catalyst volume per hour.

Workup

  1. waitis passed per hour over the catalyst at 600° C.

Sources & evidence

ORD record
ord-e2d4d36db43f4530ae0c426fa7c10af8
Source dataset
uspto-grants-1980_09
Patent number
US04224254

Linked notes

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