About: Polycyclic heterocycles with acidic N-H group - Part 1 Synthesis of some polycyclic 1,2,4-triazines disposing of acidic N-H group     Goto   Sponge   NotDistinct   Permalink

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Description
  • 7-(6-Azauracil-5-yl)-isatin 1 was converted through its thiosemicarbazone 2 to 6-(6-azauracil-5-yl)-2,3-dihydro-5H 1,2,4-triazino[5,6-b]indol-3-thione 3 and through the thiosemicarbazone of appropriate isatinic acid to 2-(2-thio-6 azauracil-5-yl)-6-(6-azauracil-5-yl)-aniline 4. The course of the cyclocondensation of this compound was studied and the reaction was found to proceed in both possible ways, resulting in a mixture of compound 3 and regioisomer 6-(2-thio-6 azauracil-5-yl)-2,3-dihydro-5H-1,2,4-triazino[5,6-b]-indol-3 one 5. Substituted aniline 4 was oxidized to 2,6-bis-(6 azauracil-5-yl)-aniline 7, which served for the preparation of hydrazone 8, cyclization of which led to 1-[2,6-bis-(6 azauracil-5-yl)-phenyl]-6-azauracil-5-carbonitrile 9. This is the first tricyclic 6-azauracil with vicinal arrangement of 6 azauracil rings.
  • 7-(6-Azauracil-5-yl)-isatin 1 was converted through its thiosemicarbazone 2 to 6-(6-azauracil-5-yl)-2,3-dihydro-5H 1,2,4-triazino[5,6-b]indol-3-thione 3 and through the thiosemicarbazone of appropriate isatinic acid to 2-(2-thio-6 azauracil-5-yl)-6-(6-azauracil-5-yl)-aniline 4. The course of the cyclocondensation of this compound was studied and the reaction was found to proceed in both possible ways, resulting in a mixture of compound 3 and regioisomer 6-(2-thio-6 azauracil-5-yl)-2,3-dihydro-5H-1,2,4-triazino[5,6-b]-indol-3 one 5. Substituted aniline 4 was oxidized to 2,6-bis-(6 azauracil-5-yl)-aniline 7, which served for the preparation of hydrazone 8, cyclization of which led to 1-[2,6-bis-(6 azauracil-5-yl)-phenyl]-6-azauracil-5-carbonitrile 9. This is the first tricyclic 6-azauracil with vicinal arrangement of 6 azauracil rings. (en)
Title
  • Polycyclic heterocycles with acidic N-H group - Part 1 Synthesis of some polycyclic 1,2,4-triazines disposing of acidic N-H group
  • Polycyclic heterocycles with acidic N-H group - Part 1 Synthesis of some polycyclic 1,2,4-triazines disposing of acidic N-H group (en)
skos:prefLabel
  • Polycyclic heterocycles with acidic N-H group - Part 1 Synthesis of some polycyclic 1,2,4-triazines disposing of acidic N-H group
  • Polycyclic heterocycles with acidic N-H group - Part 1 Synthesis of some polycyclic 1,2,4-triazines disposing of acidic N-H group (en)
skos:notation
  • RIV/61989592:15310/00:00000983!RIV/2001/MSM/153101/N
http://linked.open.../vavai/riv/strany
  • 115
http://linked.open...avai/riv/aktivita
http://linked.open...avai/riv/aktivity
  • P(VS96021), Z(MSM 153100008), Z(MSM 153100013)
http://linked.open...iv/cisloPeriodika
  • 1
http://linked.open...vai/riv/dodaniDat
http://linked.open...aciTvurceVysledku
  • Hlaváč, Jan
  • Lemr, Karel
  • Slouka, Jan
http://linked.open.../riv/druhVysledku
http://linked.open...iv/duvernostUdaju
http://linked.open...titaPredkladatele
http://linked.open...dnocenehoVysledku
  • 721997
http://linked.open...ai/riv/idVysledku
  • RIV/61989592:15310/00:00000983
http://linked.open...riv/jazykVysledku
http://linked.open...ontrolniKodProRIV
  • [737D7793BBA3]
http://linked.open...i/riv/nazevZdroje
  • Journal of Heterocyclic Chemistry
http://linked.open...in/vavai/riv/obor
http://linked.open...ichTvurcuVysledku
http://linked.open...cetTvurcuVysledku
http://linked.open...vavai/riv/projekt
http://linked.open...UplatneniVysledku
http://linked.open...v/svazekPeriodika
  • 37
http://linked.open...iv/tvurceVysledku
  • Hlaváč, Jan
  • Lemr, Karel
  • Hradil, Pavel
  • Slouka, Jan
http://linked.open...n/vavai/riv/zamer
issn
  • 0022-152X
number of pages
http://localhost/t...ganizacniJednotka
  • 15310
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