Design of a well-defined, silica-supported chiral Zn scaffold for enantioselective catalysis.
New compound Zn[(S,S)-iPr-pybox](Et)(2) (1) was fully characterized, including by X-ray diffraction structural studies. Its grafting onto partially dehydroxylated silica affords material 2, which bears well-defined chiral ([triple bond]SiO)Zn[(S,S)-iPr-pybox](Et) sites. Hybrid material 2 displays significantly better catalytic performances than 1 in enantioselective silylcyanation, thus demonstrating a beneficial grafting effect.
Ternel
Jérémy
J
Université Lille Nord de France, France.
Delevoye
Laurent
L
Agbossou-Niedercorn
Francine
F
Roisnel
Thierry
T
Gauvin
Régis M
RM
Thomas
Christophe M
CM