A facile access to enantioenriched isoindolines via one-pot sequential Cu(I)-catalyzed asymmetric 1,3-dipolar cycloaddition/oxidation [corrected]

Org Lett. 2012 Dec 21;14(24):6230-3. doi: 10.1021/ol302987h. Epub 2012 Nov 30.

Abstract

Facile access to enantioenriched isoindolines bearing a quaternary stereogenic center and a tertiary stereogenic center was successfully developed via highly efficient Cu(I)/(S,Rp)-PPFOMe-catalyzed asymmetric 1,3-dipolar cycloaddition of azomethine ylide with quinone derivatives followed by silica-gel-promoted oxidation [corrected] in a one-pot reaction protocol. The present catalytic system exhibited high diastereoselectivity, excellent enantioselectivity, and a broad substrate scope under mild conditions.