Process for the preparation of glyoxal monoactals

Details Process for the preparation of glyoxal monoactals Process for the preparation of glyoxal monoactals

1987-06-01

1989-05-30

Lone, Werren B.

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

Organic compounds

Oxygen containing

568458, 568461, 568485, 568492, 568600, C07C 4100, C07C 4148, C07C 4302

Patent

active

048353205

ABSTRACT:
This process for the preparation of products of general formula (I): ##STR1## wherein either R.sub.1 and R.sub.2, which are identical, represent a --CHRR.sub.3 group, in which R and R.sub.3, which are identical or different, represent an alkyl, alkenyl or aralkyl group, or R.sub.1 and R.sub.2, which are identical, represent a --CH.sub.2 R group, in which R represents a hydrogen atom, an alkyl, alkenyl or aralkyl radical, or R.sub.1 and R.sub.2 together form a --CH.sub.2 --(CRR).sub.n --CHR-- radical, in which n represents 0 or 1 and R retains the meaning given previously, is characterized by reacting glyoxal in the presence of an acid catalyst with an excess of the corresponding alcohol of general formula (II) RR.sub.3 CHOH, (III) RCH.sub.2 OH or (IV) --(CRR).sub.n --CHROH, in which R, R.sub.3 and n retain the meaning given previously, then stopping the reaction as soon as the concentration of the desired monoacetal of general formula (I) decreases in the reaction medium in favor of bisacetal.
Application to the preparation of the novel product: 2,2-diallyloxy ethanal.

REFERENCES:
patent: 2116016 (1938-05-01), Fischer
Kliegman et al., "J. Org. Chem.", vol. 38(3) 1973, pp. 556-560.
J. Org. Chem, vol. 38, No. 3, 1973 (Glyoxal Derivaties. V Reaction of Alcohols with Glyoxal) Jonathan M. Kliegman and Robert K. Barnes.

Affiliated with

Also associated with

Rating

Process for the preparation of glyoxal monoactals does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Process for the preparation of glyoxal monoactals, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Process for the preparation of glyoxal monoactals will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-2154165