[A synthesis of cinnamoyloxyisoflavones].

Interaction of 7-hydroxyisoflavonones with cinnamoyl chloride results in cinnamoyloxyisoflavonones.

[A convenient method of isoflavonone synthesis].

Reaction of 2-hydroxydeoxybenzoins with bis(dimethylamino)methane in ethanol results in isoflavonones.

[Synthesis of lupinine derivatives of flavonoids].

The isomerization and oxidative cyclization of 2-hydroxy-4-lupinylchalcones leads to the corresponding 7-lupinylflavanones and 7-lupinylflavones.

[Interaction of synthetic analogues of natural chalcones and flavones with guanidine].

The reaction of chalcones and flavones with guanidine in ethanol results in (2-aminopyrimidinyl-4)phenols.

[An improved method for the synthesis of flavanones].

An isomerization of 2'-hydroxychalcones into the corresponding flavanones in ethanol in the presence of triethylamine is described.