Tautomerism of anthraquinones: X. Quinizarin boron complex of
tautomeric boron complexes and boric acid esters in which one or two boron atoms are not coordinated
Tautomerism in athraquinones: II. α-hydroxy-substituted anthraquinones from the prototropic anthraquinoid
tautomerism. The
tautomeric transformations occur both in the ground