caa a22 4500 467945519 CHVBK 20180405193736.0 cr unu---uuuuu 170328e20041001xx s 000 0 eng 10.1007/s10593-005-0017-7 doi (NATIONALLICENCE)springer-10.1007/s10593-005-0017-7 (NATIONALLICENCE)springer-10.1007/s10593-005-0080-0 Samsonov V. Novosibirsk Institute of Organic Chemistry, Siberian Branch of the Russian Academy of Sciences, 630090, Novosibirsk aut Formation of the pyrroline n-oxide ring by interaction of α -isonitrosoketones − derivatives of tetrahydrobenzofurazan and -furoxan with aldehydes and morpholine and some of the reactions of these compounds [Elektronische Daten] [V. Samsonov] α-Isonitroso ketones, derivatives of tetrahydrobenzofurazan and furoxan, react with aldehydes (acetaldehyde and propionaldehyde) and morpholine to form derivatives of tetrahydropyrrolo[2,3-e]-2,1,3-benzoxadiazole 6-oxide. Treatment of the latter with hydrazine hydrate gave derivatives of 4,5-dihydro-1,2,5-oxadiazolo[3,4-f]cinnoline which are readily dehydrogenated with tetrachloro-benzoquinone to derivatives of 1,2,5-oxadiazolo[3,4-f]cinnoline. Reduction of tetrahydropyrrolo[2,3-e]-2,1,3-benzoxadiazole 6-oxides with sodium borohydride gave derivatives of N-hydroxyhexahydro-pyrrolo[2,3-e]-2,1,3-benzoxazole. Springer Science+Business Media, Inc., 2004 á-isonitroso ketones nationallicence 4 nationallicence 5 nationallicence 6 nationallicence 7-tetrahydrobenzofurazans nationallicence 4 nationallicence 5 nationallicence 6 nationallicence 7-tetrahydrobenzofuroxans nationallicence enamines nationallicence indolines nationallicence pyrroline N-oxides nationallicence cinnolines nationallicence 4,5,6,7-tetrahydrobenzofurazans nationallicence 4,5,6,7-tetrahydrobenzofuroxans nationallicence α-isonitroso ketones nationallicence Chemistry of Heterocyclic Compounds Kluwer Academic Publishers-Consultants Bureau 40/10(2004-10-01), 1346-1351 0009-3122 40:10<1346 2004 40 10593 https://doi.org/10.1007/s10593-005-0017-7 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1007/s10593-005-0017-7 text/html Onlinezugriff via DOI NATIONALLICENCE 100 1- Samsonov V. Novosibirsk Institute of Organic Chemistry, Siberian Branch of the Russian Academy of Sciences, 630090, Novosibirsk aut NATIONALLICENCE 773 0- Chemistry of Heterocyclic Compounds Kluwer Academic Publishers-Consultants Bureau 40/10(2004-10-01), 1346-1351 0009-3122 40:10<1346 2004 40 10593 NATIONALLICENCE 856 40 https://doi.org/10.1007/s10593-005-0080-0 text/html Onlinezugriff via DOI Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer NATIONALLICENCE NATIONALLICENCE NL-springer