Scheme 6.
Synthesis of compound 187. Reagents and conditions: (a) Conc. HCl, FeCl3, rt, overnight; (b) malononitrile, DABCO, EtOH; (c) sodium ascorbate, CuSO4, THF/H2O.
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.