Application of a biological‐based nanomagnetic catalyst in the synthesis of bis‐pyrazols and pyrano[3, 2‐c]pyrazoles. (6th October 2016)

• Record Type: Journal Article
• Authors: Zolfigol, Mohammad Ali; Navazeni, Mahdiyeh; Yarie, Meysam; Ayazi‐Nasrabadi, Roya
• Is Part Of: Applied organometallic chemistry. Volume 31:Number 6(2017:Jun.)
• Page Start: n/a
• Page End: n/a
• Publication Date: 2016-10-06
• Subjects: 4, 4′‐(arylmethylene)bis(1H–pyrazol‐5‐ol) -- nanomagnetic catalyst -- pyrano[3, 2‐c]pyrazole -- solvent‐free condition; Organometallic chemistry -- Periodicals; Organometallic compounds -- Periodicals; 547.05
• DOI: 10.1002/aoc.3633
• Languages: English
• ISSNs: 0268-2605

Abstract

Abstract : {Fe3 O4 @SiO2 @(CH2 )3 ‐thiourea dioxide‐SO3 H/HCl}, a newly reported nanomagnetic core–shell supported solid acid catalyst, was successfully employed in the preparation of 4, 4′‐(arylmethylene)bis(1 H –pyrazol‐5‐ol) and pyrano[3, 2‐ c ]pyrazole derivatives. The presented methods are very efficient and high‐yielding. Also, the catalyst exhibited powerful potential for reusability in both types of reactions. Abstract : {Fe3 O4 @SiO2 @(CH2 )3 ‐thiourea dioxide‐SO3 H/HCl}, a newly reported nanomagnetic core–shell supported solid acid catalyst, was successfully employed in the preparation of 4, 4′‐(arylmethylene)bis(1 H –pyrazol‐5‐ol) and pyrano[3, 2‐ c ]pyrazole derivatives. The presented methods are very efficient and high‐yielding. Also, the catalyst exhibited reusability in both reactions.