Nitration of Strongly Deactivated Aromatics with Superacidic Mixed Nitric-Triflatoboric Acid (HNO3/2CF3SO3H-B(O3SCF3)3)
作者:George A. Olah、Alexander Orlinkov、Alexandros B. Oxyzoglou、G. K. Surya Prakash
DOI:10.1021/jo00127a048
日期:1995.11
The nitration of various deactivated arenes (including methanesulfonyl-, nitro-, and polyhalobenzenes) was carried out in good yield with mixed nitric-triflatoboric superacid. For example pentafluorobenzene gave pentafluoronitrobenzene in 99% yield, nitrobenzene to m-dinitrobenzene in 92% selectivity with 85% overall yield, and methyl phenyl sulfone gave only the m-nitro isomer in 78% isolated yield. Thus the new nitrating system gives high regioselectivity and yields under generally mild reaction conditions. The reagent system is compatible with many functional groups of arenes.
BURDON, J.;FISHER, D.;PARSONS, I. W.;TATLOW, J. C., J. FLUOR. CHEM., 1981, 18, N 4, 507-514
作者:BURDON, J.、FISHER, D.、PARSONS, I. W.、TATLOW, J. C.