ISSN:
1573-9171
Source:
Springer Online Journal Archives 1860-2000
Topics:
Chemistry and Pharmacology
Notes:
Conclusions 1. Dehydrogenation of deuterated alcohols CD3CH2OH, CH3CD2OH, and CH3CH2OD on an iron catalyst is accompanied by isotopic exchange of hydrogen atoms from all three positions in the alcohol molecule with the hydrogen of the gas phase. 2. The presence of a substantial kinetic isotopic effect was established in the dehydrogenation ofα-dideuteroethyl alcohol, which agrees with the carbonyl mechanism of dehydrogenation. 3. Exchange ofα- andβ-hydrogen in the alcohol is closely associated with the mechanism of dehydrogenation; each event of reversible dehydrogenation leads to exchange of theα-hydrogen atom, while the loss of deuterium from theβ-position occurs as a result of exchange in the intermediate aldehyde formed. 4. The interrelationship proposed above, between the behavior of ethyl alcohol under conditions of synthesis from CO and H2 and under conditions of dehydrogenation, when there is no reaction of synthesis, was confirmed. A stepwise scheme of the mechanism of dehydrogenation and isotopic exchange was proposed.
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1007/BF00852038
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