M. Konopikova et al., REACTION OF 5-HYDROXY-2-HYDROXYMETHYL-4H-PYRAN-4-ONE WITH AROMATIC-ALDEHYDES AND AMINES (BETTI REACTION), Chemicke zvesti, 48(3), 1994, pp. 182-184
Preparation and spectral characteristics of 6-(alpha-anilino-X-benzyl)
derivatives of 5-hydroxy-2-hydroxymethyl-4H-pyran-4-one are described
. The substituent in position 5 hinders entering of another substituen
t to position 6. Some products of Betti reaction are thermolabile and
decompose.