Process for preparation of 2,4-disubstituted-1,5-pentanediols

Details Process for preparation of 2,4-disubstituted-1,5-pentanediols Process for preparation of 2,4-disubstituted-1,5-pentanediols

1987-06-12

1988-04-26

Evans, J. E.

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

Organic compounds

Oxygen containing

568433, 568464, 568809, 568461, C07C 2914, C07C 3120, C07C 4545, C07C 4712

Patent

active

047406399

ABSTRACT:
The invention relates to a process for the preparation of 2,4-disubstituted-1,5-pentanediols from formaldehyde and at least one simple aldehyde of the formula RCH.sub.2 CHO. More particularly the invention relates to a reaction to produce a 2,4-disubstituted glutaraldehyde wherein the reactant mole ratio of aldehyde/formaldehyde is between 1 and 8. The reaction is carried out in the presence of a secondary amine or secondary amine salt catalyst and leads to higher yields of the 2,4-disubstituted glutaraldehyde. The invention also relates to the production of 2,4-disubstituted-1,5-pentanediols by hydrogenation of the 2,4-disubstituted glutaraldehydes.

REFERENCES:
patent: 2639295 (1953-05-01), Hagemeyer
patent: 4122290 (1978-10-01), Immel et al.
patent: 4181810 (1980-01-01), Immel et al.
patent: 4346239 (1982-08-01), Bach et al.

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