Chemistry Letters p. 930 - 932 (2013)
Update date:2022-08-03
Topics:
Yang, Bing
Zhang, Jizhen
Zhao, Dejian
Wang, Yazhen
Jia, Hongbin
A novel pyridinium salt-supported [hydroxy(tosyloxy)-iodo]benzene (HTIB) reagent (N-{4-[hydroxy(tosyloxy)iodo]-phenyl}pyridinium hexafluorophosphate) was prepared via Zincke's reaction. The conjugated HTIB was an effective reagent for tosyloxylation of phenolic aromatic rings with an electron-withdrawing substitute at the ortho-position. The reagent can be easily regenerated in high yield and reused three times without any decrease in activity.
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