The grafting of the preformed Pc-L* (pyridine containing macrocyclic ligands) copper(I) complexes on different ordered and non-ordered silicas, and their use, under heterogeneous batch conditions, as catalysts for the olefin cyclopropanation are reported. High yields (up to 99%), good recyclability in halogen-free solvent reactions were obtained, together with negligible copper leaching (0.1% of total copper).
Silica SHB chiral Pc-L* copper complexes for halogen-free solvent cyclopropanation reactions / B. Castano, P. Zardi, Y.C. Hönemann, A. Galarneau, E. Gallo, R. Psaro, A. Caselli, V. Dal Santo. - In: RSC ADVANCES. - ISSN 2046-2069. - 3:44(2013 Nov 28), pp. 22199-22205. [10.1039/c3ra44806a]
Silica SHB chiral Pc-L* copper complexes for halogen-free solvent cyclopropanation reactions
B. CastanoPrimo
;P. ZardiSecondo
;E. Gallo;A. Caselli
;
2013
Abstract
The grafting of the preformed Pc-L* (pyridine containing macrocyclic ligands) copper(I) complexes on different ordered and non-ordered silicas, and their use, under heterogeneous batch conditions, as catalysts for the olefin cyclopropanation are reported. High yields (up to 99%), good recyclability in halogen-free solvent reactions were obtained, together with negligible copper leaching (0.1% of total copper).
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