F. J. Waller, A. Barrett, D. Braddock
Mar 19, 1998
Citations
0
Influential Citations
36
Citations
Journal
Tetrahedron Letters
Abstract
Abstract 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.