77670-31-6Relevant articles and documents
Asymmetric Induction in the Michael Reaction by Means of Chiral Phase-transfer Catalysts derived from Cinchona and Ephedra Alkaloids
Colonna, Stefano,Re, Alberto,Wynberg, Hans
, p. 547 - 552 (2007/10/02)
Asymmetric induction in the Michael reaction has been achieved using alkaloidonium salts in a two-phase system with optical yields of up to 36 and 26percent in the addition to αβ-unsaturated ketones of thiols and nitroalkanes respectively.The presence of a hydroxy-group β to the 'onium function is essential to achieve substantial asymmetric syntheses.