2024 : 4 : 29
Saadi Samadi

Saadi Samadi

Academic rank: Associate Professor
ORCID:
Education: PhD.
ScopusId: 36017420200
Faculty: Faculty of Science
Address: Department of Chemistry, Faculty of Science, University of Kurdistan, Zip Code 66177-15175, Sanandaj, Iran.
Phone: 4264

Research

Title
Enantioselective synthesis of allylic ester via allylic C–H bond oxidation of cyclohexene using nanoporous silica MCM-41-supported chiral amino acid ligands
Type
Presentation
Keywords
Enantioselective ,allylic ester,nanoporous silica MCM-41,chiral amino acid
Year
2017
Researchers Saadi Samadi ، Akram Ashouri ، Fatemeh Mohammadian

Abstract

One of the most important reactions in organic chemistry is the oxidative functionalization of olefins which is beneficial reaction in organic synthesis and industrial productions. The products of allylic oxidation which still has olefinic functions allow us doing further reactions. Heterogeneous catalysts have attracted enormous interest because of their advantages such as reusability of chiral catalysts and stability under different reaction conditions. M14S type nanostructures such as MCM-41 are used extensively as heterogeneous catalysts in enantioselective synthesis by immobilization of chiral ligands. In other hand, amino acids are used as catalysts, ligands and source of chirality in chemistry reactions. So, in this work, we immobilized chiral amino acid ligands on MCM-41 and characterized them by TGA, DTA, XRD, EDX, SEM and FT-IR. Then copper complex of these chiral catalysts were applied in asymmetric allylic C-H bond oxidation of cyclohexene. The chiral allylic esters were achieved in good yields and good enantiomeric excesses . The catalyst could be easily recovered and reused fifth times without remarkable loss of the reactivity, yield and enantioselectivity.