Scheme 1.
Synthesis route of compounds 3–6. Reagents: (a) mCBPA, CH2Cl2, rt, 12 h; (b) PPh3, Cl3CCN, toluene, reflux, 4 h; (c); amine, MW, 110 °C, 10 min; (d) SeO2, dioxane, reflux, 24 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.