Pd-Catalyzed sequential hydroarylation and olefination reactions of 3-allylchromones

Org Biomol Chem. 2019 Aug 28;17(32):7569-7583. doi: 10.1039/c9ob01147a. Epub 2019 Aug 6.

Abstract

In this paper, a novel approach to regioselective α- or γ-hydroarylation of 3-allylchromones with electron-rich arenes has been presented. Results of this study indicated that the regioselectivity was dependent on the substituent at the γ-position of the allyl group. Hydrogen or alkyl substitution favored α-hydroarylation, whereas aryl substitution favored γ-hydroarylation. This methodology provides an efficient means to achieve the α- or γ-selective hydroarylation of 3-allylchromones. Application of α-hydroarylation to perform Pd-catalyzed one-pot sequential α-hydroarylation and π-chelation-assisted olefination has also been reported.

Publication types

  • Research Support, Non-U.S. Gov't