Information from the abstract
ABSTRACT Benzopyrano[4,3‐ c ]pyrazoline derivatives were synthesized via an intramolecular oxidative cyclization of hydrazones using an iodinated hypercrosslinked organic polymer (HCP‐I) as a reusable heterogeneous hypervalent iodine catalyst. The HCP‐I catalytic system offers mild reaction conditions, operational simplicity, and good functional group tolerance, providing an efficient access to diverse benzopyranopyrazoline derivatives. A mechanistic investigation suggested that the reaction proceeds through a radical oxidation, followed by a concerted [3+2]‐cycloaddition pathway. Biological evaluation also revealed that a synthesized benzopyrano[4,3‐ c ]pyrazoline derivative exhibited potent anti‐influenza A activity.
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Related topics: Covalent Organic Framework Applications · Oxidative Organic Chemistry Reactions · Catalytic C–H Functionalization Methods
Thai researcher and institutional participation
Watcharapon Prasitwatcharakorn · Chanachon Thiamsiri · Jaraspim Narkpuk · Peera Jaru-Ampornpan · Torsak Luanphaisarnnont · Mahidol University · National Science and Technology Development Agency · National Center for Genetic Engineering and Biotechnology
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