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Note | Regular issue | Vol 60, No. 8, 2003, pp.1907-1914
Published online, 7th July, 2003
DOI: 10.3987/COM-03-9802
Structural Equilibrium and Ring-Chain Tautomerism of Aqueous Solutions of 4-Aminobutyraldehyde

Casper Struve and Carsten Christophersen*

*Marine Chemistry Section, Department of Chemistry, University of Copenhagen, Universitetsparken 5, DK-2100 Copenhagen, Denmark


NMR spectroscopy of aqueous solutions of 4-aminobutyraldehyde in the range 0 < pH < 13 established the occurrence of protonated and hydrated amino aldehydes in equilibrium with pyrrolines, and pyrrolinium salts.