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.
Cycloaddition of maleic anhydride to the perylene bay region. Reagents and conditions: (a) PhNO2, rfx, 1–1.5 h, Y = 45% [135]; (b) p-chloranil, rfx, 10 min, Y > 97% [136,137,138,139,140]; (c) p-chloranil, rfx, 10 min (oil bath at 240 °C), Y = 100% [126,141,142]; (d) p-chloranil, PhNO2, 190–200 °C, 20 min [143]; and (e) p-chloranil, CHCl3, 140 °C, 24 h, Y > 99% [144].
