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.
The unusual example of click reaction occuring at both alkynyl groups present on a functionalized chain of an adenosine analogue. When the catalyst TBTA was used, only the monosubstituted product 26 was isolated. Reagents: (i) CuSO4.5H2O, sodium ascorbate, THF/H2O, rt.; (ii) CuSO4.5H2O, sodium ascorbate, TBTA, t-BuOH/H2O, rt.
