ISSN:
1572-879X
Keywords:
MCM‐41
;
immobilization
;
grafting
;
chiral salen
;
reduction
;
2,6‐diformyl‐4‐tert‐butylphenol
Source:
Springer Online Journal Archives 1860-2000
Topics:
Chemistry and Pharmacology
Notes:
Abstract The new chiral salen complexes were synthesized and supported on mesoporous MCM‐41 through the condensation of 3‐aminopropyltrimethoxysilane and 2,6‐diformyl‐4‐tert‐butylphenol by the multi‐grafting method. The immobilized optically active Co(II) salen complexes showed a very high enantioselectivity in the asymmetric borohydride reduction of aromatic ketones. The chiral salen Co(II) complexes immobilized over MCM‐41 were stable during the reaction and exhibited a relatively high enantioselectivity for the reduction of ketones as compared with the homogeneous salen catalysts.
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1023/A:1019002028952
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