peri-naphthylenediamines. 28. Nitration of 1,8-bis(dimethylamino)naphthalene and 5,6-bis(dimethylamino)acenaphthene in neutral and weakly acidic media. The first case of isolation of o-nitro and o,o '-dinitro derivatives of "proton sponges"
Va. Ozeryanskii et al., peri-naphthylenediamines. 28. Nitration of 1,8-bis(dimethylamino)naphthalene and 5,6-bis(dimethylamino)acenaphthene in neutral and weakly acidic media. The first case of isolation of o-nitro and o,o '-dinitro derivatives of "proton sponges", RUSS CHEM B, 49(7), 2000, pp. 1212-1217
o-Nitro and o.o'-dinitro derivatives of 1,8-bis(dimethylamino)naphthalene a
nd its acenaphthene analog were prepared for the first time by direct nitra
tion with nitrogen dioxide or tetranitromethane. When 5,6-bis(dimethylamino
)acenaphthene was treated with nitric acid in AcOH or MeCN or with nitroniu
m tetrafluoroborate in MeCN, nitration was accompanied by partial demethyla
tion of one of the NMe2 groups.