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Title MCM-41-supported L-phenylalaninol as a chiral heterogeneous ligand in the enantioselective Kharasch-Sosnovsky reaction
Type JournalPaper
Keywords Silica mesoporous MCM-41, L-phenylalaninol, Chiral heterogeneous ligand, Enantioselective Kharasch-Sosnovsky reaction, Chiral allylic ester
Abstract In this study, L-phenylalaninol, synthesized from the reduction of naturally occurring L-phenylalanine, was immobilized on MCM-41. The resulting heterogeneous ligand was comprehensively characterized using various spectroscopic techniques, such as FT-IR, XRD, TGA, EDX, Elemental mapping, SEM and BET/BJH. Evaluation of the copper complexes of the prepared heterogeneous ligand in the enantioselective Kharasch-Sosnovsky reaction of cycloolefins afforded chiral allylic esters in high yields (up to 94%) and moderate enantioselectivities (up to 60%). Reusability experiments showed that the catalytic efficiency did not change significantly over three consecutive cycles.
Researchers Priya Noori (Fourth Researcher), Hamid Arvinnezhad (Third Researcher), Shadi Kamangar (Second Researcher), Saadi Samadi (First Researcher)