Tetrahedron Letters p. 1641 - 1642 (1998)
Update date:2022-08-23
Topics:
Waller, Francis J.
Barrett, Anthony G. M.
Braddock, D. Christopher
Ramprasad, Dorai
The hydrated group 4 metal triflates, Hf(OTf)4 and Zr(OTf)4, were found to be excellent catalysts (10 mol%) for the mononitration of o-nitrotoluene using a single equivalent of concentrated (69%) nitric acid. The only side product is water and the catalysts are readily recycled from the aqueous phase and re-used.
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