Abstract
Two novel macrocyclic tetra-imine-diphenol Schiff base (H2L1 and H2L2) were synthesized by [2 + 2] cyclocondensation of ortho-aminophenyl diamines [1,2-bis(2′-aminophenoxy)benzene (I) and 1,2-bis(2′-aminophenoxy)-4-t-butylbenzene (II)] with 2,6-diformyl-4-methylphenol. Two novel tetra-amine-diphenol macrocycles (H2L3 and H2L4) have been obtained by reduction of the imine analogs with NaBH4 in MeOH/CHCl3.
ACKNOWLEDGMENTS
We are grateful to the Departments of Chemistry of Bu-Ali Sina and Tarbiat Moalem Universities and to Sharif University of Technology for the support of this work.