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   Nano-ZnO catalyzed green and efficient one-pot four-component synthesis of pyranopyrazoles  
   
نویسنده tekale s.u. ,kauthale s.s. ,jadhav k.m. ,pawar r.p.
منبع journal of chemistry - 2013 - دوره : 2013 - شماره : 0
چکیده    An efficient zinc oxide nanoparticle catalyzed one-pot,four-component synthesis of 6-amino-3-methyl-5-cyano-4-aryl-1,4-dihydropyrano[2,3-c]pyrazoles from aromatic aldehyde,malononitrile,ethyl acetoacetate,and hydrazine hydrate in aqueous medium is described. since water was employed as the reaction medium,it serves as a green route for the synthesis of pyrano[2,3-c]pyrazoles. the advantages associated with the present protocol include nonchromatographic purification technique,use of recyclable heterogeneous nano-zno catalyst in aqueous medium,and short reaction time. it combines successfully the synergistic effect of green chemistry with nanocatalysis. © 2013 sunil u. tekale et al.
آدرس department of chemistry,shri muktanand college,gangapur, India, department of chemistry,deogiri college,station road,aurangabad, India, department of chemistry,deogiri college,station road,aurangabad, India, department of chemistry,deogiri college,station road,aurangabad, India
 
     
   
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