Heterogeneous Gold(I)-Catalysed Annulation between 2-Aminopyridines and Propiolaldehydes Leading to 3-Acylimidazo[1,2-A]Pyridines

Autor:	Mingzhong Cai, Li Wei, Feiyan Yi, Fang Yao
Rok vydání:	2018
Předmět:	chemistry.chemical_compound Annulation chemistry 010405 organic chemistry General Chemistry 010402 general chemistry Heterogeneous catalysis 01 natural sciences Medicinal chemistry Propiolaldehyde Phosphine 0104 chemical sciences Aminopyridines
Zdroj:	Journal of Chemical Research. 42:341-346
ISSN:	2047-6507 1747-5198
DOI:	10.3184/174751918x15314807595487
Popis:	The heterogeneous annulation between 2-aminopyridines and propiolaldehydes was achieved in CH2Cl2 at 25 °C in the presence of 3 mol% of MCM-41-immobilised phosphine gold(I) complex (MCM-41-PPh3-AuCl) and AgSbF6 under air, yielding a variety of 3-acylimidazo[1,2-a] pyridines in good yields. This heterogeneous gold(I) catalyst can be easily prepared by a simple procedure, recovered by filtration of the reaction solution and recycled up to seven times without significant loss of activity.
Databáze:	OpenAIRE
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