Silica gel supported bis-cinchona alkaloid: a highly efficient chiral ligand for heterogeneous asymmetric dihydroxylation of olefins

1997 ◽  
Vol 8 (6) ◽  
pp. 841-844 ◽  
Author(s):  
Choong Eui Song ◽  
Jung Woon Yang ◽  
Hyun-Joon Ha
Keyword(s):  
Silica Gel ◽  
Cinchona Alkaloid ◽  
Chiral Ligand ◽  
Asymmetric Dihydroxylation ◽  
Highly Efficient

Osmylated Macroporous Cinchona Alkaloid Resins: Highly Efficient and Recyclable Catalysts for Asymmetric Dihydroxylation of Olefins.

ChemInform ◽  
2005 ◽  
Vol 36 (13) ◽  
Author(s):  
Yil Sung Park ◽  
Cheon Hee Jo ◽  
Han Young Choi ◽  
Eun Kyung Kwon ◽  
Choong Eui Song
Keyword(s):  
Cinchona Alkaloid ◽  
Asymmetric Dihydroxylation ◽  
Highly Efficient ◽  
Recyclable Catalysts

Highly efficient immobilization of Cinchona alkaloid derivatives to silica gel via click chemistry

2006 ◽  
Vol 47 (49) ◽  
pp. 8721-8726 ◽  
Author(s):  
Karol M. Kacprzak ◽  
Norbert M. Maier ◽  
Wolfgang Lindner
Keyword(s):  
Click Chemistry ◽  
Silica Gel ◽  
Cinchona Alkaloid ◽  
Highly Efficient

scholarly journals Preparation of Mesoporous SBA-16 Silica-Supported Biscinchona Alkaloid Ligand for the Asymmetric Dihydroxylation of Olefins

2014 ◽  
Vol 2014 ◽  
pp. 1-5 ◽  
Author(s):  
Shaheen M. Sarkar ◽  
Md. Eaqub Ali ◽  
Md. Lutfor Rahman ◽  
Mashitah Mohd Yusoff
Keyword(s):  
Catalytic System ◽  
Catalyst System ◽  
Optically Active ◽  
Cinchona Alkaloid ◽  
Chiral Ligand ◽  
Asymmetric Dihydroxylation ◽  
Osmium Tetraoxide ◽  
Vicinal Diol ◽  
Ordered Mesoporous ◽  
Prepared Complex

Optically active cinchona alkaloid was anchored onto mesoporous SBA-16 silica and the as-prepared complex was used as a heterogeneous chiral ligand of osmium tetraoxide for the asymmetric dihydroxylation of olefins. The prepared catalytic system provided 90–93% yield of vicinal diol with 92–99% enantioselectivity. The ordered mesoporous SBA-16 silica was found to be a valuable support for the cinchona alkaloid liganded osmium catalyst system which is frequently used in chemical industries and research laboratories for olefin functionalization.

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