Process for the preparation of propane-1,3-diols, disubstituted

Details Process for the preparation of propane-1,3-diols, disubstituted Process for the preparation of propane-1,3-diols, disubstituted

1977-11-16

1980-01-01

Evans, Joseph E.

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

Organic compounds

Oxygen containing

260602, 568814, 568821, 568831, 568838, 568862, C07C 2914, C07C 3502

Patent

active

041818105

ABSTRACT:
A process for the preparation of a propane-1,3-diol, disubstituted in the 2-position, which comprises contacting an ethanal disubstituted in the 2-position, which ethanal has the formula ##STR1## wherein R.sup.1 and R.sup.2 are identical or different and denote optionally substituted alkyl, cycloalkyl, aralkyl or aryl radicals or an optionally substituted heterocyclic radical, or together denote an optionally substituted divalent hydrocarbon radical with formaldehyde in the presence of an acid ion exchanger and thereafter contacting the resultant reaction product with hydrogen under hydrogenation conditions.

REFERENCES:
patent: 2818443 (1957-12-01), Robeson
Durr, "Annales de Chimie", 1956, pp. 84-114.
Cason, "Essential Principles of Organic Chemistry", 1956, pp. 162-167.

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