Asymmetric Induction in the Michael Reaction by Means of Chiral Phase-transfer Catalysts derived from Cinchona and Ephedra Alkaloids

DOI: 10.1039/P19810000547

Source and publish data:

Journal of the Chemical Society. Perkin transactions I p. 547 - 552 (1981)

Update date:2022-07-29

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Authors:

Colonna, Stefano

Re, Alberto

Wynberg, Hans

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Article abstract of DOI:10.1039/P19810000547

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.

Full text of DOI:10.1039/P19810000547

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