Asymmetric α-Functionalization of 2-Alkyl Azaarenes: Synthesis of Tertiary Fluorides Having Vicinal Stereogenic Centers

Org Lett. 2021 Dec 17;23(24):9441-9445. doi: 10.1021/acs.orglett.1c03626. Epub 2021 Dec 6.

Abstract

An enantioselective approach for synthesizing fluorinated azaarenes containing vicinal quaternary-tertiary stereocenters is summarized. The chiral copper(I)-phosphine complex binds with the azaarenes followed by Michael addition to unsaturated acyl imidazoles, resulting in α-functionalized products with an excellent level of enantioselectivities (up to 99%), diastereoselectivities (>20:1), and yields (up to 97%). Furthermore, post-functionalization of the acyl imidazole part has also been demonstrated.

Publication types

  • Research Support, Non-U.S. Gov't