The first atroposelective desymmetrization of prochiral N-aryl maleimides through its conversion to axially chiral phthalimides is developed by applying a de novo arene construction strategy. Catalyzed by bis(3,5-dimethylphenyl)prolinol TMS-ether, this… Click to show full abstract
The first atroposelective desymmetrization of prochiral N-aryl maleimides through its conversion to axially chiral phthalimides is developed by applying a de novo arene construction strategy. Catalyzed by bis(3,5-dimethylphenyl)prolinol TMS-ether, this reaction proceeds through oxidative [4 + 2]-cycloaddition with α,β-unsaturated aldehydes to generate only a chiral C-N axis remote from the reaction sites with excellent enantioselectivity (up to 97.5:2.5 er).
               
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