Abstract
WITH reference to Dr. Morton's suggestion regarding the role of vitamin A aldehyde (axerophthal) in the chemical changes involved in photo-reception1, it may be of interest to mention that we prepared this substance some eighteen months ago by Oppenauer oxidation of vitamin A alcohol with aluminium isopropoxide in the presence of acetaldehyde. The ultra-violet absorption spectrum of the aldehyde showed maxima at 350 and 368 mμ in cyclohexane and a band at 657 mμ in the antimony trichloride reaction, and was characterized by the formation of a 2:4-dinitrophenylhydrazone, m.p. 207–209°.
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NATURE, 153, 69 (1944).
Batty, Burawoy, Harper, Heilbron and Jones, J. Chem. Soc., 135 (1938).
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HUNTER, R., HAWKINS, E. Vitamin A Aldehyde. Nature 153, 194 (1944). https://doi.org/10.1038/153194b0
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DOI: https://doi.org/10.1038/153194b0
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