ChemInform Abstract: Ultrasonic Assisted Dimeric Cinchona Based Chiral Phase Transfer Catalysts for Highly Enantioselective Synthesis of Epoxidation of α,β-Unsaturated Ketones.

ChemInform ◽  
2015 ◽  
Vol 46 (18) ◽  
pp. no-no
Author(s):  
Jayaraman Sivamani ◽  
Veeramanoharan Ashokkumar ◽  
Velu Sadhasivam ◽  
Kumaraguru Duraimurugan ◽  
Ayyanar Siva
Keyword(s):  
Phase Transfer ◽  
Enantioselective Synthesis ◽  
Chiral Phase ◽  
Unsaturated Ketones ◽  
Phase Transfer Catalysts ◽  
Ultrasonic Assisted ◽  
Chiral Phase Transfer Catalysts

Ultrasonic assisted dimeric cinchona based chiral phase transfer catalysts for highly enanatioselective synthesis of epoxidation of α,β-unsaturated ketones

RSC Advances ◽  
2014 ◽  
Vol 4 (104) ◽  
pp. 60293-60299 ◽  
Author(s):  
Jayaraman Sivamani ◽  
Veeramanoharan Ashokkumar ◽  
Velu Sadhasivam ◽  
Kumaraguru Duraimurugan ◽  
Ayyanar Siva
Keyword(s):  
Ultrasonic Irradiation ◽  
Phase Transfer ◽  
Cinchona Alkaloids ◽  
Ammonium Bromide ◽  
Chiral Phase ◽  
Unsaturated Ketones ◽  
Phase Transfer Catalysts ◽  
Ultrasonic Assisted ◽  
Chiral Phase Transfer Catalysts ◽  
Enantioselective Epoxidation

New types of bis-quaternary ammonium bromide as chiral multisite phase transfer catalysts derived from cinchona alkaloids have been developed and evaluated for the enantioselective epoxidation of chalcones in the presence of lower concentrations of various oxidants, bases and ultrasonic irradiation conditions.

Polymeric chiral phase-transfer catalysts derived from cinchona alkaloids for enantioselective synthesis of α-amino acids

Tetrahedron ◽  
2007 ◽  
Vol 63 (33) ◽  
pp. 7906-7915 ◽  
Author(s):  
Jeong-Hee Lee ◽  
Mi-Sook Yoo ◽  
Ji-Hee Jung ◽  
Sang-sup Jew ◽  
Hyeung-geun Park ◽  
...  
Keyword(s):  
Amino Acids ◽  
Phase Transfer ◽  
Cinchona Alkaloids ◽  
Enantioselective Synthesis ◽  
Chiral Phase ◽  
Phase Transfer Catalysts ◽  
Chiral Phase Transfer Catalysts
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