Stereoselective phosphonylation of aldehydes via chiral phosphordiamaidites. A potentially versatile asymmetric route to organophosphorus biomolecules
Abstract
The novel, chiral phosphordiamidite, {N,O-(1R,2S)-MeNCHMeCHPhO}PN(SiMe3)2 containing deprotonated ephidrine has been shown to phosphonylate aldehydes readily to afford α-functionalised phosphonate esters with diasteroselectivities upto ca. 96%.