Design and Synthesis of New 19-25 Membered Aza-Macrocycles Based on 2,4,6-Triarylpyridine

Document Type : Research Article

Author

Faculty of Chemistry, Kharazmi University, Tehran, I.R. IRAN

Abstract

Formation of macrocycle from non-cyclic precursors is inherently difficult. In this research, to minimizing of this problem, two methods, crab-like, and template-directed synthesis were run together simultaneously, to afford new eleven aza macrocycles (AM1-11) based on 2,4,6-triaryl pyridine in high yields. The AM1-11 were synthesized by the reaction of diamine compounds (1-11) with 2,6-bis(3-(2-chloroacetamido)phenyl)-4-(phenyl)pyridine (BCP) as a crab-like reagent, in the presence of K2CO3/KI (template reagent). BCP was obtained from the reaction of 2,6-Bis(3-aminophenyl)-4-(phenyl)pyridine (BAP) and chloro acetylchloride at room temperature. Also, BAP was synthesized by using 3-nitro acetophenone and bezaldehyde in the manner of modified Chichibabin reaction and then the reduction of the product by Zn/NH4Cl. The structures of macrocycles were confirmed by IR, 1H NMR, 13C NMR, and Mass spectroscopies.

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