L. Lazar et al., 5-COMPONENT EQUILIBRIA OF RING-CHAIN TAUTOMERIC MIXTURES DERIVED FROM3-AMINO-1,2-PROPANEDIOL AND AROMATIC-ALDEHYDES, Tetrahedron, 53(3), 1997, pp. 1081-1088
In the reactions of 3-amino-1,2-propanediol with aromatic aldehydes, f
ive-component ring-chain tautomeric mixtures were formed, involving ox
azolidine and oxazine C-2 epimers and the corresponding Schiff base. T
hese multicomponent tautomeric equilibria could be described by the eq
uation log K = rho sigma(+) + K-0, used earlier for the two- and three
-component equilibria relating to only oxazine or oxazolidine rings. C
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