Synthetic Communications p. 961 - 966 (2003)
Update date:2022-08-11
Topics:
Rajagopal
Srinivasan
The mono nitration of phenols with ferric nitrate has been achieved in high regio-selectivities in 1-3 h at 30-60°C using the ionic liquid 1,3-di-n-butylimidazolium tetraflouroborate [bbim]BF4 as the solvent. In particular, excellent para selectives of the order of 76-86% for unsubstituted, ortho and meta-substituted phenols were observed.
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