The successful mononitration of a variety of electron-rich aromatic su
bstrates is reported, employing either nitronium tetrafluoroborate or
''claycop'' as the nitrating agent. Dinitration of four of the substra
tes was achieved when employing nitronium tetrafluoroborate. Several o
f the products have previously been prepared only by indirect methods.
(C) 1998 Elsevier Science Ltd. All rights reserved.