Scheme 3.
Reagents and conditions: a. O3, (CH3)2C(O):H2O (20:1), rt; b. i O3, CH2Cl2, −40 °C, ii pyrrolidine, CH2Cl2, rt, 3 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.