Scheme 1. Synthetic Route for the Preparation of 8a–f. Ar = 3,5-F2C6H3, 2,4-Cl2C6H3. R = CH3, C3H7, C4H9.
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.