Chirality preservation in pyrrolinone iron tetracarbonyl complexes ? a route to enantiopure 5-substituted pyrrolinones

Abstract
The enantiopure iron complex 4 reacts under the influence of BF3·OEt2 with allylsilanes and enol acetates through a cationic intermediate in which the chirality of 4 is preserved, yielding enantiopure 5-substituted 3-pyrrolin-2-ones.

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