Question

How are the following conversions effected ? (i) ethylene glycol to acetaldehyde (ii) glycerol acrolein​

Answer 1

(i) ethylene glycol to acetaldehyde

Two possible mechanisms have been proposed to account for the rearrangement of ethylene glycol to acetaldehyde. ... The second is an acid catalyzed dehydration reaction proceeding through the enol to yield acetaldehyde.

(ii) glycerol acrolein

.Acrolein can be obtained from glycerine by a dehydration reaction. Catalytic processes in gas phase have been developed to obtain acrolein from a renewable feedstock using heterogeneous catalysts.

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Answer 2

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Our data demonstrate that ethylene glycol is dehydrated to acetaldehyde, which is then disproportionated to ethanol and acetyl coenzyme A (acetyl-CoA). The latter is further converted to acetate, and this pathway is coupled to ATP formation by substrate-level phosphorylation.