Continuous process for the preparation of 2-ethyl-2-(hydroxymeth

Details Continuous process for the preparation of 2-ethyl-2-(hydroxymeth Continuous process for the preparation of 2-ethyl-2-(hydroxymeth

1992-08-31

1993-08-10

Lone, Werren B.

Organic compounds -- part of the class 532-570 series

Organic compounds

Oxygen containing

568462, 568463, 568852, 568861, 568863, C07C 2704, C07C 2914, C07C 3118

Patent

active

052351181

ABSTRACT:
Disclosed is a continuous process for the manufacture of 2-ethyl-2-(hydroxymethyl)hexanal wherein 2-ethylhexanal, formaldehyde and a tertiary amine are continuously fed to a reaction zone and crude product comprising an aqueous phase and an organic phase containing 2-ethyl-2-(hydroxymethyl)hexanal and 2-ethylhexanal is continuously removed from the reaction zone Also disclosed are processes for (1) the azeotropic distillation of the organic phase of the crude product whereby unreacted 2-ethylhexanal is recovered and (2) the catalytic hydrogenation of the refined, organic phase of the crude product to produce 2-butyl-2-ethyl-1,3-propanediol.

REFERENCES:
patent: 4097540 (1978-06-01), Immel et al.
patent: 4393251 (1983-06-01), Broecker et al.
patent: 5118883 (1992-06-01), Gehrer et al.

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