Coupling constants 1J(15N,31P) as a probe for the conformational equilibria of 2-amino-substituted 1,3,2λ5-oxazaphosphinan-2-ones a

Tapio Viljanen, Karel D. Klika, F. Fülöp, Kalevi Pihlaja

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9 Citations (Scopus)

Abstract

The15N NMR spectra of both P(2) diastereomers of the trans-fused 2-bis(2-chloroethyl)amino-3,4,4a,5,6,7,8,8a-octahydro-1,3,2λ 5-benzoxazaphosphinin-2-ones and their 3-methyl and 3-benzyl derivatives have been measured. Depending on the P(2) configuration, the coupling constants 1J(15N,31P) vary markedly. The applicability of the coupling between exocyclic nitrogen and phosphorus for determination of the heteroring conformation is discussed.

Original languageEnglish
Pages (from-to)1479-1481
Number of pages3
JournalJournal of the Chemical Society, Perkin Transactions 2
Issue number6
Publication statusPublished - 1998

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Phosphorus
Conformations
Nitrogen
Nuclear magnetic resonance
Derivatives

ASJC Scopus subject areas

  • Chemistry(all)

Cite this

Coupling constants 1J(15N,31P) as a probe for the conformational equilibria of 2-amino-substituted 1,3,2λ5-oxazaphosphinan-2-ones a. / Viljanen, Tapio; Klika, Karel D.; Fülöp, F.; Pihlaja, Kalevi.

In: Journal of the Chemical Society, Perkin Transactions 2, No. 6, 1998, p. 1479-1481.

Research output: Contribution to journalArticle

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AU - Klika, Karel D.

AU - Fülöp, F.

AU - Pihlaja, Kalevi

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AB - The15N NMR spectra of both P(2) diastereomers of the trans-fused 2-bis(2-chloroethyl)amino-3,4,4a,5,6,7,8,8a-octahydro-1,3,2λ 5-benzoxazaphosphinin-2-ones and their 3-methyl and 3-benzyl derivatives have been measured. Depending on the P(2) configuration, the coupling constants 1J(15N,31P) vary markedly. The applicability of the coupling between exocyclic nitrogen and phosphorus for determination of the heteroring conformation is discussed.

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