METHODE SIMPLE DE SYNTHESE D'AGENTS DE TRANSFERT CHIRAUX PAR ACTION D'UN AGENT ALKYLANT A SQUELETTE BINAPHTYLE-1,1'
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.
New and Improved Synthesis of Optically Pure (R)- and (S)-2,2'-Dimethyl-1,1'-binaphthyl and Related Compounds
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Maigrot, Nicole,Mazaleyrat, Jean-Paul
p. 317 - 320
(2007/10/02)
REDUCTIVE CLEAVAGE OF AXIALLY DISYMMETRIC TERTIARY AMINES AND QUATERNARY AMMONIUM SALTS BY LITHIUM ALUMINIUM HYDRIDE. SYNTHESIS OF NEW 1,1'-BINAPHTHYL SUBSTITUTED AMINES
Axially disymmetric tertiary amines or quaternary ammonium salts A are synthesized by double alkylation of primary or secundary amines with racemic or optically pure 2,2'-bis(bromomethyl)-1,1'-binaphthyl.Their reductive cleavage by lithium aluminium hydri
Cottineau, Frederic,Maigrot, Nicole,Mazaleyrat, Jean- Paul
p. 421 - 424
(2007/10/02)
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