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Cooperative NHC‐based Catalytic System Immobilised onto Carbon Materials for the Cycloaddition of CO 2 to Epoxides
Author(s) -
Souleymanou Myriam Y.,
ElOuahabi Fatima,
MasdeuBultó Anna M.,
Godard Cyril
Publication year - 2021
Publication title -
chemcatchem
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.497
H-Index - 106
eISSN - 1867-3899
pISSN - 1867-3880
DOI - 10.1002/cctc.202001816
Subject(s) - cycloaddition , graphene , catalysis , chemistry , oxide , pyrene , carbon fibers , epoxide , covalent bond , carbon nanotube , stacking , synergistic catalysis , organic chemistry , combinatorial chemistry , materials science , nanotechnology , composite number , composite material
New pyrene‐tagged imidazolium salts and their corresponding carboxylates were synthesised and the latter tested as organocatalysts in the cycloaddition of CO 2 with epoxides. The best performing organocatalyst was then non‐covalently immobilised onto carbon materials (carbon nanotubes (CNTs), reduced graphene oxide (rGO) and carbon beads (CBs)) via π‐π stacking interactions and their activity and recoverability in the cycloaddition reaction were studied. The heterogenised catalyst onto reduced graphene oxide ( 4 a @rGO) was recycled several times although a loss of activity was observed. This catalyst was also used for the transformation of a series of epoxides under mild conditions.