A new and green approach for regiospecific synthesis of novel chromeno‐triazolopyrimidin using tungstic acid immobilized MCM‐41 as a reusable catalyst | Zendy

Akrami Sedigheh | Zendy; Karami Bahador | Zendy; Farahi Mahnaz | Zendy

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A new and green approach for regiospecific synthesis of novel chromeno‐triazolopyrimidin using tungstic acid immobilized MCM‐41 as a reusable catalyst

Author(s) -

Akrami Sedigheh,

Karami Bahador,

Farahi Mahnaz

Publication year - 2020

Publication title -

journal of heterocyclic chemistry

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 0.321

H-Index - 59

eISSN - 1943-5193

pISSN - 0022-152X

DOI - 10.1002/jhet.3960

Subject(s) - chemistry , catalysis , tungstic acid , chromone , mesoporous material , environmentally friendly , carbon 13 nmr , organic chemistry , solid acid , green chemistry , combinatorial chemistry , elemental analysis , aqueous solution , mcm 41 , ionic liquid , ecology , biology

A novel, eco‐friendly and fast route has been developed for the synthesis of new and known triazolo[1,5‐ a ]pyrimidin fused chromone derivatives via a one pot three‐component reaction of 3‐amino‐1,2,4‐triazoles, aromatic aldehydes and 4‐hydroxycoumarin in aqueous medium at room temperature. These reactions are catalyzed by MCM‐41‐HWO 4 as a safe and recyclable mesoporous solid acid. It combines successfully the synergistic effect of green chemistry with nanocatalysis. The yields are high and the products were characterized by 1 H NMR, 13 CNMR spectra and elemental analysis.

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