Asymmetric diaryliodonium salts bearing 1,3,5-trimethoxyphenyl (TMP) and an aryl group, are applicable to multiple arylation reactions without using a transition metal complex.
1) For example, the
4-biphenylyl derivative (
1) can smoothly react with phenol, sodium benzenesulfinate, and sodium azide as
O-,
N- and
S- nucleophiles to give the corresponding
O-,
N- and
S-aryl products.
2) Furthermore, reactions with
18fluorinating agents have been reported. This
18F labeling procedure can be applied to the synthesis of molecular probe contrast agents for PET (Positron Emission Tomography) scan diagnostics.
3)
