About: A H-1, C-13 and N-15 NMR spectroscopic and GIAO DFT study of ethyl 5-oxo-2-phenyl-4-(phenylhydrazono)-4,5-dihydro-1H-pyrrole-3-carboxylate     Goto   Sponge   NotDistinct   Permalink

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  • 15N-Labelled ethyl 5-oxo-2-phenyl-4-(2-phenylhydrazono)-4,5-dihydro-1H-pyrrole-3-carboxylate was synthesized by azo-coupling of diazotized aniline (using Na15NO2, 99% 15N) with ethyl 4,5-dihydro-5oxo-2-phenyl-(1H)-pyrrole-3-carboxylate. The product was formed as a tautomeric hydrazone mixture as con?rmed by 13C and 15N chemical shifts, and was obtained as a mixture of E and Z isomers according to nJ(15N, 13C). A comparison of the 1H NMR data with GIAO DFT calculations enabled determination of the con?guration of the carboxy ester group in both isomers.
  • 15N-Labelled ethyl 5-oxo-2-phenyl-4-(2-phenylhydrazono)-4,5-dihydro-1H-pyrrole-3-carboxylate was synthesized by azo-coupling of diazotized aniline (using Na15NO2, 99% 15N) with ethyl 4,5-dihydro-5oxo-2-phenyl-(1H)-pyrrole-3-carboxylate. The product was formed as a tautomeric hydrazone mixture as con?rmed by 13C and 15N chemical shifts, and was obtained as a mixture of E and Z isomers according to nJ(15N, 13C). A comparison of the 1H NMR data with GIAO DFT calculations enabled determination of the con?guration of the carboxy ester group in both isomers. (en)
Title
  • A H-1, C-13 and N-15 NMR spectroscopic and GIAO DFT study of ethyl 5-oxo-2-phenyl-4-(phenylhydrazono)-4,5-dihydro-1H-pyrrole-3-carboxylate
  • A H-1, C-13 and N-15 NMR spectroscopic and GIAO DFT study of ethyl 5-oxo-2-phenyl-4-(phenylhydrazono)-4,5-dihydro-1H-pyrrole-3-carboxylate (en)
skos:prefLabel
  • A H-1, C-13 and N-15 NMR spectroscopic and GIAO DFT study of ethyl 5-oxo-2-phenyl-4-(phenylhydrazono)-4,5-dihydro-1H-pyrrole-3-carboxylate
  • A H-1, C-13 and N-15 NMR spectroscopic and GIAO DFT study of ethyl 5-oxo-2-phenyl-4-(phenylhydrazono)-4,5-dihydro-1H-pyrrole-3-carboxylate (en)
skos:notation
  • RIV/00216275:25310/10:39881833!RIV11-MSM-25310___
http://linked.open...avai/riv/aktivita
http://linked.open...avai/riv/aktivity
  • Z(MSM0021627501)
http://linked.open...iv/cisloPeriodika
  • 23
http://linked.open...vai/riv/dodaniDat
http://linked.open...aciTvurceVysledku
http://linked.open.../riv/druhVysledku
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  • 244652
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  • RIV/00216275:25310/10:39881833
http://linked.open...riv/jazykVysledku
http://linked.open.../riv/klicovaSlova
  • GIAO; NMR; Isomerization; Tautomerism (en)
http://linked.open.../riv/klicoveSlovo
http://linked.open...odStatuVydavatele
  • GB - Spojené království Velké Británie a Severního Irska
http://linked.open...ontrolniKodProRIV
  • [1AB6ACE21693]
http://linked.open...i/riv/nazevZdroje
  • Tetrahedron Letters
http://linked.open...in/vavai/riv/obor
http://linked.open...ichTvurcuVysledku
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http://linked.open...UplatneniVysledku
http://linked.open...v/svazekPeriodika
  • 51
http://linked.open...iv/tvurceVysledku
  • Hrdina, Radim
  • Luňák, Stanislav
  • Lyčka, Antonín
  • Aysha, Tarek
  • Holuša, Radim
http://linked.open...ain/vavai/riv/wos
  • 000278451000031
http://linked.open...n/vavai/riv/zamer
issn
  • 0040-4039
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  • 25310
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