Iridium-Catalyzed Enantioselective Formal α-Allylic Alkylation of Acrylonitrile

11 May 2023, Version 1
This content is a preprint and has not undergone peer review at the time of posting.

Abstract

A highly enantioselective formal α-allylic alkylation of acrylonitrile is developed using 4-cyano-3-oxotetrahydrothiophene (c-THT) as a safe and easy-to-handle surrogate of acrylonitrile. This two-step process consists of an Ir/(P,olefin)-catalyzed branched-selective allylic alkylation using easily accessible branched rac-allylic alcohols as the allylic electrophile followed by retro-Dieckmann/retro-Michael fragmentation and is shown to be applicable for the enantioselective synthesis of α-allylic acrylates and α-allylic acrolein.

Keywords

allylic alkylation
enantioselective catalysis
iridium catalysis
acrylonitrile

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