Scheme 15.
Synthesis of symmetric urea derivative 78. Reagents and conditions: (a) CDI, DMF, 60 °C; (b) AlCl3, toluene, reflux.
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.