Cinchona-Derived Chiral Poly(Phase-Transfer Catalysts) for Asymmetric Synthesis

2008 ◽  
pp. 49-70 ◽  
Author(s):  
Sang-sup Jew ◽  
Hyeung-geun Park
Keyword(s):  
Asymmetric Synthesis ◽  
Phase Transfer ◽  
Phase Transfer Catalysts

Contrast performance in catalytic ability—new cinchona phase transfer catalysts for asymmetric synthesis of α-amino acids

Tetrahedron ◽  
2005 ◽  
Vol 61 (6) ◽  
pp. 1443-1447 ◽  
Author(s):  
Shanmugam Elango ◽  
Murugapillai Venugopal ◽  
P.S. Suresh ◽  
Eni
Keyword(s):  
Amino Acids ◽  
Asymmetric Synthesis ◽  
Phase Transfer ◽  
Phase Transfer Catalysts

Asymmetric synthesis of β-amino ketones by using cinchona alkaloid-based chiral phase transfer catalysts

2018 ◽  
Vol 16 (45) ◽  
pp. 8704-8709 ◽  
Author(s):  
Weihua Li ◽  
Yifeng Wang ◽  
Danqian Xu
Keyword(s):  
Asymmetric Synthesis ◽  
Nucleophilic Addition ◽  
Phase Transfer ◽  
Cinchona Alkaloid ◽  
Reaction Products ◽  
Chiral Phase ◽  
Phase Transfer Catalysts ◽  
Chiral Phase Transfer Catalysts ◽  
The Mannich Reaction ◽  
High Yields

A highly enantioselective nucleophilic addition of ketones to versatile imines catalyzed by chiral PTC has been developed, and the process affords the Mannich reaction products with tertiary stereocenters in good to high yields and excellent enantioselectivities. This protocol is effective for gram scale reaction.

Unexpected Metal Base-Dependent Inversion of the Enantioselectivity in the Asymmetric Synthesis of α-Amino Acids Using Phase-Transfer Catalysts Derived from Cinchonidine.

ChemInform ◽  
2003 ◽  
Vol 34 (10) ◽  
Author(s):  
Patricia Mazon ◽  
Rafael Chinchilla ◽  
Carmen Najera ◽  
Gabriela Guillena ◽  
Rob Kreiter ◽  
...  
Keyword(s):  
Amino Acids ◽  
Asymmetric Synthesis ◽  
Phase Transfer ◽  
Metal Base ◽  
Phase Transfer Catalysts
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