Scheme 1.
Reagents and conditions: (i) HSCH2COOH, NaOH, methanol, r.t., 1 h; (ii) H2O2, acetic acid, 40–45 °C, 4 h; (iii) DCC, DMAP, THF, r.t., 1 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.