efficient one-pot synthesis of pyrazoles catalyzed by nano-crystalline solid acid catalyst

Authors

abbas teimouri

alireza najafi chermahini

leila ghorbanian

abstract

an efficient and green protocol for the synthesis of pyrazoles derivatives by one-pot reaction of different 1,3-dicarbonyl compounds with hydrazines/hydrazides has been developed using nano-sulfated zirconia, nano-structured zno, nano-g-alumina and nano-zsm-5 zeolites, as the catalyst. the optical properties of the nano-structured catalysts and organic molecules were studied. the advantages of methods are short reaction times and milder conditions, easy work-up and purification of products by non-chromatographic methods. the catalysts can be recovered for subsequent reactions and reused without any appreciable loss of efficiency.

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Journal title:
iranian journal of catalysis

Publisher: islamic azad university, shahreza branch

ISSN 2252-0236

volume 4

issue 1 2014

Keywords
[ ' n a n o ' , ' s u l f a t e d z i r c o n i a ' , ' n a n o z n o ' , ' n a n o ' , ' u f 0 6 7 ' , ' a l u m i n a ' , ' n a n o ' , ' z s m ' , 5 , ' g r e e n s y n t h e s i s ' , ' p y r a z o l e s ' ]

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