Tetrahedron Letters p. 1243 - 1246 (1983)
Update date:2022-08-03
Topics:
Mazaleyrat, J. P.
A general way for introducing axial chirality in phase transfer catalysts, by quaternarization with 2,2'-bis(bromomethyl)-1,1'-binaphtyl, is described and applied to l(-) ephedrine.One of the resulting catalysts gives 37 percent ee in epoxydation of chalcone.
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Doi:10.1016/S0040-4020(01)91885-X
(1983)Doi:10.1002/ejoc.200500256
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(2005)Doi:10.1016/j.steroids.2016.12.012
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