Table 2. Optimization of Modified Reaction Conditions En Route to 5a.
a
Reaction conditions: 1 mmol 1, 0.5 M.
b
Isolated 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.