Process for the preparation of trimethylolalkanes

Details Process for the preparation of trimethylolalkanes Process for the preparation of trimethylolalkanes

1977-12-16

1978-10-24

Evans, Joseph E.

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

Organic compounds

Oxygen containing

260602, C07C 2914

Patent

active

041222903

ABSTRACT:
An improved process for the preparation of a trimethylolalkane of the formula ##STR1## wherein R.sup.1 denotes an aliphatic radical by reacting formaldehyde with an aldehyde of the formula ##STR2## wherein R.sup.1 has the meaning indicated above and thereafter hydrogenating the resultant 2,2-dimethylolalkanal, the improvement residing in employing formaldehyde in a molar ratio of at least 8:1 to the aldehyde reactant, carrying out the aldehyde-formaldehyde reaction in the presence of an aldol condensation base at a temperature between -20 and 5.degree. C, optionally in the presence of an ion of an element of group VII and/or VIII and/or sub-group I or II of the periodic system.

REFERENCES:
patent: 2206379 (1940-07-01), Wyler
patent: 2240735 (1941-05-01), Wyler
patent: 2400724 (1946-05-01), Walker
patent: 3504042 (1970-03-01), Shimono et al.
Ogata et al., "J. Chem. Soc.", No. 10, 1967, pp. 1013-1020.

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