Zusammenfassung
Enantioselective versions of photocatalytic reactions present significant challenges due to the highly reactive and transient nature of photoexcited species. While utilizing a dual catalytic system that employs a photocatalyst (PC) and a chiral catalyst has proven to be a useful strategy for controlling the steric outcome, recent synthetic efforts to combine both catalytic functions into a ...
Zusammenfassung
Enantioselective versions of photocatalytic reactions present significant challenges due to the highly reactive and transient nature of photoexcited species. While utilizing a dual catalytic system that employs a photocatalyst (PC) and a chiral catalyst has proven to be a useful strategy for controlling the steric outcome, recent synthetic efforts to combine both catalytic functions into a single, bifunctional catalyst have emerged and yielded impressive results. This chapter will discuss the uses of these bifunctional organic photocatalysts over the last decade in photocatalytic reactions where the resulting enantiomeric excess is at least 50%. Mechanistically, most of the presented reactions proceed via a triplet–triplet energy transfer mechanism, but alternative mechanisms that lead to high stereoinduction will also be discussed.
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