Amines Q 0810 N,N,N'-Trialkyl-1,8-diaminonaphthalenes: Convenient Method of Preparation from Protonated Proton Sponges and the First X-Ray Information. -The title compounds are obtained by partial dealkylation of the corresponding tetraalkyl derivatives under conditions A). In the presence of alkyl iodides, exchange of lower order alkyls by higher ones is observed. Substrates (XI) fail to give demethylated products. -(OZERYANSKII*, V. A.; POZHARSKII, A. F.; KOROLEVA, M. G.; SHEVCHUK, D. A.; KAZHEVA, O. N.; CHEKHLOV, A. N.; SHILOV, G. V.; DYACHENKO, O. A.; Tetrahedron 61 (2005) 17, 4221-4232; Dep. Org. Chem., Rostov State Univ., Rostov-on-Don 344090, Russia; Eng.) -Klein 34-128
Systems. -Previously unknown N-amino derivatives of naphthoimidazoles [cf. (VII), (IX), (X)], phenanthroimidazole (IV) and related N-amino-N'-methylimidazolium picrates [cf. (XIII)] are obtained by direct amination of the corresponding fused imidazoles with O-picrylhydroxylamine. -(KOROLEVA, M. G.; DYABLO, O. V.; POZHARSKII, A. F.; STARIKOVA, Z. A.; Chem. Heterocycl. Compd. (N. Y.) 39 (2003) 9, 1161-1171; Rostov State Univ., Rostov-on-Don 344090, Russia; Eng.) -M. Schroeter 20-108
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