H-Mordenite zeolite as an efficient, rapid and recyclable catalyst for chemoselective synthesis o

Abstract

In this investigation H-mordenite zeolite has been shown to be an efficient, rapid, green, stable, chemoselective and recyclable catalyst for the synthesis of 1,1-diacetates (acylals) of various aromatic aldehydes under solvent-free conditions at room temperature. The main advantages of this protocol include low catalyst loading, shorter reaction time, excellent yields, ecofriendly, mild-condition, easy work-up procedures and reusable catalyst. This method must be useful in future for the synthesis of similar derivatives. The synthesized zeolite was characterized by various techniques via X-ray diffraction (XRD), scanning electronic microscopy (SEM), fourier transform-infrared (FTIR spectroscopy) and brunauer-emmett-teller (BET) surface area analysis. The synthesized reaction products were characterized by FTIR and 1 H NMR technique. Further investigation of the application of H-MOR zeolite for other reactions is ongoing in our laboratory. KEYWORDS

Design of MFI Type Aluminum- and Titanium-Containing Zeolites

“…All things described above (the skeleton, voids in the skeleton, and channels) refer to structural characteristics of zeolites, which predetermine their structure-dependent properties (for example, catalytic and molecular-sieve) [5][6][7]. However, zeolites possess unique textural characteristics (specific surface and its composition; porosity and pore size), which also affect the properties (absorption, diffusion, mechanical, etc.)…”

Selective Anomeric Deacetylation of Per-Acetylated Carbohydrates Using (i-Pr)3Sn(OEt) and Synthesis of New Derivatives

“…There are various procedures to release anomeric configuration of acetylated carbohydrates, such as asbutylamine, (Pawar & Edgar, 2013) ammonia, (Li, Li, Zhaivg, & Guan, 2004) bis (tributyltin) oxide, (Li, Li, Zhaivg, & Guan, 2004) HgO/HgCl, (Sambaiah, Fanwick, & Cushman, 2001) piperidine, (Zhang & Kováč, 1999) hydrazine acetate, (Excoffier, Gagnaire, & Utille, 1975) zinc chloride, (Hanessian & Kagotani, 1990) Zn-NH 4 Cl-EtOH, (Zhang, Fu, Si, Wang, Wang, & Tang, 2011) HClO 4 -SiO 2 , (Tiwari & Misra, 2006) Nd(OTf) 3 , (Tran, Deydier, Bonnaffé, & Le Narvor, 2008) FeCl 3 .6H 2 O, 12 MgO/MeOH, (Herzig & Nudelman, 2009) zinc acetate, (Kaya, Sonmez, Kucukislamoglu, & Nebioglu, 2012) AlCl 3 , (Wang, Mo, Chiou, & Liu, 2010) enzyme, (Moriyoshi, Yamanaka, Ohmoto, Ohe, & Sakai, 2005) silica-supported boron sulfonic, (Bhat, Naikoo, Tomar, Ahmad Bhat, Malla, Kumar, & Tiwari, 2017), MgO/MeOH (Jabbari & Noroozi, 2018), Potassium carbonate, (Calvaresi & Hergenrother, 2013) Many reactions can be created by carbohydrate invertebrates that often have pharmaceutical application. Oxazophosphorin compounds are used as DNA alkylating agents in malignant chemotherapy (Park, Lee, Cho, & Park, 2007).…”