Lg. Wrench et al., NOVEL REARRANGEMENT OF A 10-MEMBERED SCHIFF-BASE MACROCYCLE TO A TRICYCLIC PRODUCT - CRYSTAL-STRUCTURES OF THE TRICYCLE AND A RELATED MACROCYCLE, Tetrahedron letters, 34(51), 1993, pp. 8349-8352
A Schiff base disulphide macrocyclic intermediate for the preparation
of bis(aminoethanethiol) (BAT) ligands 1 rearranged to a tricyclic com
pound, whose structure was demonstrated by X-ray determination. It was
found to be in equilibrium with the precursor Schiff base in solution
.