Scheme 2.
Synthesis of 12 and isolated corresponding atropisomers. In blue, each meso‐phenyl presents a single NO2 group that can be positioned either above or below the plane.
Official websites use .gov
A
.gov website belongs to an official
government organization in the United States.
Secure .gov websites use HTTPS
A lock (
) or https:// means you've safely
connected to the .gov website. Share sensitive
information only on official, secure websites.