Nanocomposite based on sulfonated-melamine-formaldehyde resin and Fe3O4 as a highly efficient catalyst for the synthesis of 1,4-dihydropyrano[2,3-c] pyrazole derivatives

سال انتشار: 1398
نوع سند: مقاله کنفرانسی
زبان: انگلیسی
مشاهده: 381

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شناسه ملی سند علمی:

ICCO02_180

تاریخ نمایه سازی: 3 اردیبهشت 1399

چکیده مقاله:

Current research work presents a high efficiency polymer based nanocomposite as catalyst for using in the synthesis of organic compounds. Among the polymer-based catalyst, sulfonated-melamine–formaldehyde resin, which has excellent physical and chemical stability, is widely used in chemical transformations. Thus, a novel magnetic sulfonated melamine–formaldehyde resin (MSMF) catalyst was successfully prepared from a mixture of sulfonated melamine-formaldehyde and Fe3O4 nanoparticles. The resulted MSMF was characterized by FTIR, CHNSO, SEM, VSM and TGA analysis. The catalytic activity of MSMF was examinedin the preparation of 1,4-dihydropyrano[2,3-c] pyrazole derivatives. 1,4-dihydropyrano[2,3-c]pyrazole derivatives were synthesized via one‐pot three‐ component condensation of variousaromatic aldehydes with malononitrile and 3-methyle -1-phenyl-5-pyrazolone in excellentyields in the presence of MSMF as a highly efficient heterogeneous catalyst. Results showedthe MSMF is an excellent catalyst for green chemical processes owing to its high catalyticactivity, stability and reusability.

نویسندگان

Shefa Miraninezhad

School of Chemistry, Damghan University, Damghan, ۳۶۷۱۶-۴۱۱۶۷, Iran

Seied Ali Pourmousavi

School of Chemistry, Damghan University, Damghan, ۳۶۷۱۶-۴۱۱۶۷, Iran- Institute of Biological Science, Damghan University, Damghan, ۳۶۷۱۶-۴۱۱۶۷, Iran

Ehsan Nazarzadeh Zare

School of Chemistry, Damghan University, Damghan, ۳۶۷۱۶-۴۱۱۶۷, Iran