ISSN print edition: 0366-6352
ISSN electronic edition: 1336-9075
Registr. No.: MK SR 9/7

Published monthly
 

Regioselective synthesis of 5-aryl azo salicylaldehydes catalyzed by Zn/SBA-15

Forouzan Zonouzi, Alireza Rahmani, Hamid Dezhampanah, Bahram Ghalami-Choobar, and Afsaneh Zonouzi

University Campus 2, University of Guilan, Rasht, Iran

 

E-mail: B-ghalami@guilan.ac.ir

Abstract: Synthesis of (E)-2-hydroxy-5-(aryldiazenyl)benzaldehydes was investigated. Various Lewis acids were tested as catalyst to achieve regioselectivity. In addition to various commercial catalysts, mesoporous Zn/SBA-15 was synthesized through a modified direct method with chloride salt as zinc precursor and characterized using N2-physisorption, low-angle XRD, FESEM and EDX methods; specific surface area of 832 m2 g−1 is a noteworthy result compared to the literature. The synthesized catalyst showed the best results in terms of both total yield and regioselectivity. A scalable two-phase reaction media was used to facilitate both reaction progress monitoring and final product separation. Minimizing solvent consumption, this method can be considered for larger scale production of aryl azo dyes and related compounds.

Keywords: Catalyst ; Azo dyes ; Regioselective ; Synthesis ; Lewis acids 

Full paper is available at www.springerlink.com.

DOI: 10.1007/s11696-019-00790-1

 

Chemical Papers 73 (10) 2409–2415 (2019)

Tuesday, August 03, 2021

IMPACT FACTOR 2020
2.097
SCImago Journal Rank 2020
0.344
SEARCH
Advanced
VOLUMES
XXVIII. International Conference on Coordination and Bioinorganic Chemistry
© 2021 Chemical Papers