Scheme 16.
Synthetic scheme for preparation of hybrids 68–70. Reaction conditions: (a) sodium ascorbate, CuSO4·5H2O, t-BuOH/THF/H2O (3:1:1); (68: 63% yield; 69: 49% yield; 70: 68% yield).
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.