caa a22 4500 46799384X CHVBK 20180323112552.0 cr unu---uuuuu 170328e19901101xx s 000 0 eng 10.1007/BF00476982 doi (NATIONALLICENCE)springer-10.1007/BF00476982 Synthesis and deamination of 9-aminoimadazo[1,2- a ]benzimidazoles [Elektronische Daten] [T. Kuz'menko, V. Kuz'menko, A. Pozharskii, V. Anisimova] The reaction between 1,2-diaminobenzimidazole and α-halocarbonyl compounds has given some novel 9-aminoimidazo [1,2-a]benzimidazoles. On treatment with nitrous acid or potassium hydroxide in DMSO, these compounds give, in addition to the deaminated compounds, 3-nitroso-derivatives of the deamination products. In the system DMSO-KOH, 9-benzylideneaminoimidazobenzimidazoles are converted smoothly into 1(9H)-imidazobenzimidazoles. It is shown that 3-nitroso-derivatives which are unsubstituted in the NH group exist predominantly in the hydroxyimino form. Plenum Publishing Corporation, 1991 Kuz'menko T. Scientific-Research Institute for Physical and Organic Chemistry, Rostov State University, 344104, Rostov-on-Don aut Kuz'menko V. Scientific-Research Institute for Physical and Organic Chemistry, Rostov State University, 344104, Rostov-on-Don aut Pozharskii A. Scientific-Research Institute for Physical and Organic Chemistry, Rostov State University, 344104, Rostov-on-Don aut Anisimova V. Scientific-Research Institute for Physical and Organic Chemistry, Rostov State University, 344104, Rostov-on-Don aut Chemistry of Heterocyclic Compounds Kluwer Academic Publishers-Plenum Publishers 26/11(1990-11-01), 1264-1270 0009-3122 26:11<1264 1990 26 10593 https://doi.org/10.1007/BF00476982 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1007/BF00476982 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Kuz'menko T. Scientific-Research Institute for Physical and Organic Chemistry, Rostov State University, 344104, Rostov-on-Don aut NATIONALLICENCE 700 1- Kuz'menko V. Scientific-Research Institute for Physical and Organic Chemistry, Rostov State University, 344104, Rostov-on-Don aut NATIONALLICENCE 700 1- Pozharskii A. Scientific-Research Institute for Physical and Organic Chemistry, Rostov State University, 344104, Rostov-on-Don aut NATIONALLICENCE 700 1- Anisimova V. Scientific-Research Institute for Physical and Organic Chemistry, Rostov State University, 344104, Rostov-on-Don aut NATIONALLICENCE 773 0- Chemistry of Heterocyclic Compounds Kluwer Academic Publishers-Plenum Publishers 26/11(1990-11-01), 1264-1270 0009-3122 26:11<1264 1990 26 10593 Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer