期刊
ADVANCED SYNTHESIS & CATALYSIS
卷 355, 期 1, 页码 87-92出版社
WILEY-V C H VERLAG GMBH
DOI: 10.1002/adsc.201200145
关键词
Bronsted acids; ethane-1; 2-diamine; imidazo[1; 2-a]pyridines; multicomponent cascade reaction
资金
- National Natural Science Foundation of China [21172099]
- Program 111
- International Cooperation Project of Gansu Province [1011WCGA170]
An efficient four-component cascade reaction for the synthesis of trisubstituted hexahydroimidazo[1,2-a]pyridines starting from readily available aldehydes, ketones and ethane-1,2-diamine catalyzed by p-toluenesulfonic acid is described. Two new cycles and five new bonds are constructed with all reactants being efficiently utilized in this transformation. The mechanism of the reaction was investigated and some crucial reaction intermediates were observed.
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