Scheme 12.
Condition reactions: ChCl/urea (1:2), 40–100 °C, 2–5 h.
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.