S. Forget et M. Veber, DIBENZOTETRAAZA[14]ANNULENE COMPLEXES - SYNTHESIS OF LONG-CHAIN-SUBSTITUTED 4,5-DIALKOXYORTHOPHENYLENEDIAMINES, New journal of chemistry, 21(4), 1997, pp. 409-411
The aim of this work is to present the first synthesis of long-chain-s
ubstituted orthophenylenediamines starting from 1,2-dialkoxybenzenes,
which were dinitrated in one step under biphasic conditions. A subsequ
ent reduction reaction, using aqueous hydrazine and palladium on activ
ated charcoal, led to the desired aromatic diamines, which are useful
synthons in the synthesis of mesomorphic dibenzotetraaza[14]annulene c
omplexes.