perchloric acid–functionalized silica nanosphere as novel and green catalyst for the synthesis of 2h-indazolo[2,1-b]phthalazine-trione derivatives
نویسندگان
چکیده
in this report, synthesis, characterization and application of silica perchloric acid nanosphere as a novel and heterogeneous catalyst is described. these nanospheres have been characterized by xrd, ft-ir, bet and tga spectra and also by sem and tem images. the results show that it has a spherical shape and the particles size are between 75 and 100 nm. the catalytic activity has been investigated in three-component coupling reaction involving a variety of aldehydes, phthalhydrazide and dimedone at 80 °c under solvent-free conditions. the present methodology offers several advantages such as excellent yields, simple procedure, shorter reaction times, milder conditions and the catalyst exhibited remarkable reusable activity.
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عنوان ژورنال:
iranian journal of catalysisناشر: islamic azad university, shahreza branch
ISSN 2252-0236
دوره
شماره Articles in Press 2015
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