Nickel/Brønsted acid dual-catalyzed regio-and enantioselective hydrophosphinylation of 1, 3-dienes: access to chiral allylic phosphine oxides

J Long, Y Li, W Zhao, G Yin - Chemical Science, 2022 - pubs.rsc.org
J Long, Y Li, W Zhao, G Yin
Chemical Science, 2022pubs.rsc.org
While chiral allylic organophosphorus compounds are widely utilized in asymmetric
catalysis and for accessing bioactive molecules, their synthetic methods are still very limited.
We report the development of asymmetric nickel/Brønsted acid dual-catalyzed
hydrophosphinylation of 1, 3-dienes with phosphine oxides. This reaction is characterized
by an inexpensive chiral catalyst, broad substrate scope, and high regio-and
enantioselectivity. This study allows the construction of chiral allylic phosphine oxides in a …
While chiral allylic organophosphorus compounds are widely utilized in asymmetric catalysis and for accessing bioactive molecules, their synthetic methods are still very limited. We report the development of asymmetric nickel/Brønsted acid dual-catalyzed hydrophosphinylation of 1,3-dienes with phosphine oxides. This reaction is characterized by an inexpensive chiral catalyst, broad substrate scope, and high regio- and enantioselectivity. This study allows the construction of chiral allylic phosphine oxides in a highly economic and efficient manner. Preliminary mechanistic investigations suggest that the 1,3-diene insertion into the chiral Ni–H species is a highly regioselective process and the formation of the chiral C–P bond is an irreversible step.
The Royal Society of Chemistry
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