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■ A Convenient Synthesis of Indole and 1,4-Dihydropyridine Hybrid Macromolecules by Dimerization of [2-(1H-Indol-3-yl)ethyl]pyridinium Salts

Gang Ling, Jing Zhang, Rong-Zheng Zhang, and Fu-She Han*

*Key Lab of Synthetic Rubber, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun, Jilin 130022, China

Abstract

The design and synthesis of a novel type of macrocyclic compounds containing indole and 1,4-dihydropyridine heterocyclic subunits is presented. The key reaction involved in the synthesis was a base-mediated dimerization of [2-(1H-indol-3-yl)ethyl]pyridinium salts. The structure of the macrocycles was unambiguously confirmed by NMR and HRMS spectroscopic and X-ray single crystal diffraction.