Several title compounds have been prepared by the modified Ponzio procedure and their IR, 1H and 13C NMR data are presented. In some cases trinitromethylated arenes were obtained as a by-product. Oxidative cleavage to parent aldehydes and oxidation to carboxylic acids were the major competing reactions. 9-Anthracenecarbaldehyde oxime and 10-methyl-9-anthracenecarbaldehyde oxime reacted with nitrogen