Synthesis and thermal reactivity of a novel bis-salicylaldimino enediyne and its Cu(II) and Ni(II) complexes

A novel bis-salicylaldimino enediyne 1, along with its Ni(II) and Cu(II) complexes 6 and 7, respectively, were prepared. Differential Scanning Calorimetric studies revealed an elevation of the onset temperature for Bergman cyclization upon complexation. (C) 2000 Published by Elsevier Science Ltd.