The reaction of substituted b-enaminoamides with 4-methylbenzenediazonium tetraphenylborate in dichloromethane produces besides the primary products of azo coupling reaction at the a-carbon atom of b-enaminoamides, also mixtures of heterocyclic compounds of boron: 1,3,2k4-oxazaborines, 1H- 1,3,2k4-diazaborine-4-ones and 4H-1,2,4,3k4-triazaborines. Proportions of the products change depending on the reaction conditions, particularly depending on the presence or absence of base (sodium acetate) in the reaction mixture. The heterocyclic compounds were separated chromatographically and identified by means of X-ray, 1H, 11B, 13C and 15N NMR spectra and elemental analyses.

Straightforward access to oxazaborines, diazaborinones and triazaborines by reactions of b-enaminoamides with 4-methylbenzenediazonium tetraphenylborate

BERTOLASI, Valerio;
2009

Abstract

The reaction of substituted b-enaminoamides with 4-methylbenzenediazonium tetraphenylborate in dichloromethane produces besides the primary products of azo coupling reaction at the a-carbon atom of b-enaminoamides, also mixtures of heterocyclic compounds of boron: 1,3,2k4-oxazaborines, 1H- 1,3,2k4-diazaborine-4-ones and 4H-1,2,4,3k4-triazaborines. Proportions of the products change depending on the reaction conditions, particularly depending on the presence or absence of base (sodium acetate) in the reaction mixture. The heterocyclic compounds were separated chromatographically and identified by means of X-ray, 1H, 11B, 13C and 15N NMR spectra and elemental analyses.
M., Svobodová; J., Bárta; P., Šimunek; Bertolasi, Valerio; V., Machácek
File in questo prodotto:
Non ci sono file associati a questo prodotto.

I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.

Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11392/531028
 Attenzione

Attenzione! I dati visualizzati non sono stati sottoposti a validazione da parte dell'ateneo

Citazioni
  • ???jsp.display-item.citation.pmc??? ND
  • Scopus 18
  • ???jsp.display-item.citation.isi??? 18
social impact