Scopus
🔓 Açık Erişim YÖKSİS Eşleşti
Synthesis of environmentally friendly, efficient and highly recyclable Lewis acid-type calix[4]arene catalysts containing flexible or bulky groups for the Mannich reaction
RSC Advances · Ocak 2017
YÖKSİS Kayıtları
Synthesis of environmentally friendly, efficient andhighly recyclable Lewis acid-type calix[4]arenecatalysts containing flexible or bulky groups for theMannich reaction
RSC Advances · 2017 SCI
PROFESÖR MUSTAFA YILMAZ →
Makale Bilgileri
DergiRSC Advances
Yayın TarihiOcak 2017
Cilt / Sayfa7 · 10748-10756
Scopus ID2-s2.0-85013129809
Erişim🔓 Açık Erişim
Özet
Two new calix[4]arene-based Lewis acid-type catalysts containing flexible and bulky groups (2 and 3) were successfully synthesized. Their structures were characterized using FTIR, 1H-NMR, COSY-NMR, 13C-NMR, APT-NMR, and elemental analysis techniques. Moreover, to provide easily recyclable, environmentally benign, cost effective and reusable catalysts, these calix[4]arene-based Lewis acid-type catalysts were grafted onto epoxyl-functionalized silica-coated Fe3O4 magnetic nanoparticles (EPPTMS-MN) to afford their corresponding calixarene-grafted magnetic nanoparticles (TMAC[4]But-MNP and P(Ph)3C[4]But-MNP). FTIR, TGA, TEM, VSM and elemental analysis techniques were performed to confirm their structures. In addition, the catalytic capabilities of four Lewis acid-type calixarene catalysts were evaluated in a three component Mannich reaction of benzaldehyde with aniline and acetophenone in aqueous media without co-solvents. The association of the effects of functional groups (flexible and bulky), molar equivalents, amount of water used, and reaction durations on their catalytic efficacies were also evaluated.
Yazarlar (2)
1
Serkan Sayin
2
Mustafa Yilmaz
Kurumlar
Giresun Üniversitesi
Giresun Turkey
Selçuk Üniversitesi
Selçuklu Turkey
Metrikler
15
Atıf
2
Yazar