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one-pot, multi-component synthesis of dihydropyrano(2,3-c)pyrazoles catalysed by preheated fly-ash in aqueous medium
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نویسنده
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pandey a. k. ,mishra k. ,shrivastava s. c. ,shukla p. ,tripathi a.
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منبع
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journal of sciences islamic republic of iran - 2023 - دوره : 34 - شماره : 2 - صفحه:129 -136
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چکیده
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A facile one-pot multicomponent protocol for the synthesis of bio-active dihydropyrano(2,3-c)pyrazole derivatives from ethyl acetoacetate, hydrazine hydrate, malononitrile and aryl aldehydes using preheated-fly-ash as catalyst for the first time.these environmentally begin multicomponent cyclocondensations offer some interesting advantages, advantages of this methodology are the use of nontoxic solvent, cost-effective and easy availability of catalyst, ease of the work-up, high yields (up to 95%), and green protocol.
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کلیدواژه
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pyrazole ,green protocol ,multi component ,preheated fly-ash ,antimicrobial ,model reaction
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آدرس
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university of allahabad, department of chemistry, india, prayagraj (a constituent pg college of unversity of allahabad, prayagraj), cmp degree college, department of chemistry, india, university of allahabad, department of chemistry, india, university of allahabad, department of chemistry, india, a government-aided pg college of dr rml avadh university, k.s. saket p.g. college, india
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پست الکترونیکی
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skpbooks@gmail.com
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Authors
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