Formaldehyde → Trimethylolpropane

Reaction equation

C=O.[CH2:3]([C:5]([CH2:10][OH:11])([CH2:8][CH3:9])[CH:6]=[O:7])[OH:4]>>[CH2:3]([C:5]([CH2:10][OH:11])([CH2:6][OH:7])[CH2:8][CH3:9])[OH:4]

Participants

Reactant 2

HCID 712Formaldehyde

HCID 110516932,2-Bis(hydroxymethyl)butanal

Product 1

HCID 6510Trimethylolpropane

Procedure

EP-A 860 419, too, proposes carrying out the preparation of 2,2-dimethylolbutanal from n-butyraldehyde and formaldehyde in a plurality of stages, with the actual reaction occurring in the first stage and the 2-ethylacrolein obtained as by-product being reacted with further formaldehyde in the second stage. The 2,2-dimethylolbutanal prepared in this way can then be hydrogenated to give trimethylolpropane. Once again, no formate is isolated.

Sources & evidence

ORD record: ord-ba6d4dcd2b1044a7b3b416a567079934
Source dataset: uspto-grants-2002_09
DOI: 10.6084/m9.figshare.5104873.v1
Patent number: US06448455B1

Reaction notes

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