Abstract
The reactivity of a chiral nonracemic glyoxylic azomethine imine has been investigated. This species reacts with a wide range of dipolarophiles, with a complete regio- and facial stereoselectivity. The introduction of an electron-withdrawing substituent on the ylide leads to a lower endo selectivity with electron-withdrawing dipolarophiles, but to an improved exo selectivity with styrene derivatives when compared to the reactivity of aliphatic- or aromatic-substituted ylides.
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