Polymer Support Assisted Selective Functionalization of Azoles Using a Palladium-Catalyzed Coupling Reaction
作者:Yoshinori Kondo、Takashi Komine、Takao Sakamoto
DOI:10.1021/ol000183u
日期:2000.10.1
Regioselective palladium-catalyzed monoarylation of azoles was achieved using iodobenzoate immobilized on an insoluble polymer support. The positional selectivity for the coupling reaction was dramatically influenced by the presence of CuI. No diarylation was observed in either case. Unsymmetrical diarylation was also obtained with the polymer support using sequential coupling reactions.
Disclosed are compounds of the formula
1
wherein the variables R
N
, R
C
, R
1
, R
25
, R
2
, and R
3
are as defined herein. These compounds have activity as inhibitors of beta-secretase and are therefore useful in treating a variety of discorders such as Alzheimer's Disease.