caa a22 4500 605530823 CHVBK 20210128100825.0 cr unu---uuuuu 210128e20150501xx s 000 0 eng 10.1134/S1070428015050164 doi (NATIONALLICENCE)springer-10.1134/S1070428015050164 Synthesis of new spiro compounds proceeding from 11 H -Indeno[1,2- b ]quinoxalin-2-one [Elektronische Daten] [A. Velikorodov, N. Stepkina, E. Shustova, V. Ionova] Reaction of 11H-indeno[1,2-b]quinoxalin-2-one with semi(thiosemi)carbazides in ethanol resulted in semi(thiosemi)carbazones which at boiling in acetic anhydride underwent cylization yielding N-{3′-acetyl-3′H-spiro[indeno[1,2-b]quinoxalin-11,2′-[1,3,4]oxa(thia)diazol]-5′-yl}acetamides. Aldol crotonic condensation of 11H-indeno[1,2-b]quinoxalin-2-one with methyl N-(4-acetylphenyl)carbamate afforded the corresponding chalcone that at boiling in anhydrous ethanol with hydrazine hydrate for 1 h formed a spiro compound with a pyrazole ring. Five-component condensation of ninhydrin, 1,2-phenylenediamine, sarcosine, malononitrile (or ethyl cyanoacetate), and 4-formylphenyl N-phenylcarbamate in a mixture EtOH — [bmim]Br led to the formation of 4-{3′,3′-dicyano(or 3′-ethoxycarbonyl-3′-cyano)-1′-methylspiro[indeno[1,2-b]quinoxaline-11,2′-pyrrolidin]-4′-yl}phenyl N-phenylcarbamates. Pleiades Publishing, Ltd., 2015 Velikorodov A. Astrakhan State University, pl. Shaumyana 1, 414000, Astrakhan, Russia aut Stepkina N. Astrakhan State University, pl. Shaumyana 1, 414000, Astrakhan, Russia aut Shustova E. Astrakhan State University, pl. Shaumyana 1, 414000, Astrakhan, Russia aut Ionova V. Astrakhan State University, pl. Shaumyana 1, 414000, Astrakhan, Russia aut Russian Journal of Organic Chemistry Pleiades Publishing 51/5(2015-05-01), 674-679 1070-4280 51:5<674 2015 51 11178 https://doi.org/10.1134/S1070428015050164 text/html Onlinezugriff via DOI BK010053 XK010053 XK010000 Metadata rights reserved Springer special CC-BY-NC licence nationallicence 1 research-article jats NATIONALLICENCE NATIONALLICENCE NL-springer NATIONALLICENCE 856 40 https://doi.org/10.1134/S1070428015050164 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Velikorodov A. Astrakhan State University, pl. Shaumyana 1, 414000, Astrakhan, Russia aut NATIONALLICENCE 700 1- Stepkina N. Astrakhan State University, pl. Shaumyana 1, 414000, Astrakhan, Russia aut NATIONALLICENCE 700 1- Shustova E. Astrakhan State University, pl. Shaumyana 1, 414000, Astrakhan, Russia aut NATIONALLICENCE 700 1- Ionova V. Astrakhan State University, pl. Shaumyana 1, 414000, Astrakhan, Russia aut NATIONALLICENCE 773 0- Russian Journal of Organic Chemistry Pleiades Publishing 51/5(2015-05-01), 674-679 1070-4280 51:5<674 2015 51 11178