Efficient clay supported Ni0 nanoparticles as heterogeneous catalyst for solvent-free synthesis of Hantzsch polyhydroquinoline

Autor:	Lakshi Saikia, Dipanka Dutta, Dipak Kumar Dutta
Rok vydání:	2012
Předmět:	Process Chemistry and Technology Substituent Nanoparticle General Chemistry Heterogeneous catalysis Catalysis chemistry.chemical_compound Montmorillonite chemistry Dimedone Polar effect Organic chemistry Ammonium acetate
Zdroj:	Catalysis Communications. 19:1-4
ISSN:	1566-7367
DOI:	10.1016/j.catcom.2011.12.013
Popis:	article i nfo 0 -nanoparticles A green and efficient multicomponent one-pot synthesis of Hantzsch polyhydroquinoline was achieved by the condensation of aldehydes, dimedone, ethylacetoacetate and ammonium acetate at room temperature using environmentally benign modified Montmorillonite supported Ni 0 -nanoparticles as catalyst. The well dispersed Ni 0 -nanoparticles having a high surface to volume ratio have promising features for the reaction such as easy removal of the catalyst, solvent-free, shorter reaction time, high product yields (about 95%) and easy work up procedure. There is no significant effect of electron withdrawing or donating nature of substituent on aldehydes in the formation of polyhydroquinoline derivatives.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::0af575e47769baa3e5decdc39566b465 https://doi.org/10.1016/j.catcom.2011.12.013 Zobrazit plný text záznamu Full Text from ScienceDirect