Selective O-arylation of pyridin-2-ones with diaryliodonium salts.
|
a
1,2-Cl2Ph, 140 °C.
b
Ph2IOTf (1.5 equiv.).
c
8 h.
d
Ph2IOTf (2.5 equiv.).
e
0.25 mmol scale.
f
1 h.
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