SYNTHESIS OF 2-(4′-R-BENZYLIDENE)-4-AZA-1,3-INDANEDIONES AND INVESTIGATION OF ISOMERIZATION AROUND THE EXOCYCLIC DOUBLE BOND

Authors

  • M. Петрова Latvian Institute of Organic Synthesis, Riga LV-1006
  • Э. Лиепиньш Latvian Institute of Organic Synthesis, Riga LV-1006
  • П. Пасторс Riga Technical University, Riga LV-1048
  • М. Флейшер Latvian Institute of Organic Synthesis, Riga LV-1006
  • В. Кампарс Riga Technical University, Riga LV-1048

DOI:

https://doi.org/10.1007/7116

Keywords:

2-(4′-R-benzylidene)-4-aza-1, 3-indanediones, internal rotation, E, Z-isomerism, AM1 method, NMR spectroscopy

Abstract

2-Benzylidene-4-aza-1,3-indanediones have been synthesized and their structures have been investigated by NMR spectroscopy and quantum chemistry in the AM1 approximation. It was established  that  rotation about the exocyclic C(2)=C(10) formal double bond occurs in chloroform solutions of these compounds. The energy characteristics of  this process have been determined experimentally and estimated theoretically.

How to Cite
Petrova, M.; Liepinsh, E.; Pastors, P.; Fleisher, M.; Kampars, V.  Chem. Heterocycl. Compd. 2008, 44, 820. [Khim. Geterotsikl. Soedin. 2008, 1024.]

For this article in the English edition see DOI 10.1007/s10593-008-0115-4


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Published

2022-10-06

Issue

No. 7 (2008)

Section

Original Papers