## Abstract L'étude en RMN du ^1^H, ^13^C et ^31^P d'hétérocycles dioxaphospholaniques a permis d'identifier sans ambiguité la position des substituants sur le cycle et aussi d'accéder à un certain nombre d'informations relatives à la stéréochimie de la molécule.
Etude spectroscopique (i.r., RMN1H et 13C) de derivés de la N-méthyl 2H-dihydro-3,4 benzoxazine-1,3. Influence de la substitution de l'homocycle
✍ Scribed by Christian Proponet; Bernard Laude; Mohamed Ramah; G. Riess
- Publisher
- Elsevier Science
- Year
- 1982
- Tongue
- English
- Weight
- 456 KB
- Volume
- 38
- Category
- Article
- ISSN
- 1386-1425
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✦ Synopsis
The spectroscopic properties (i.r., NMRIH and 13C) of substituted N-methyl 2H-3,4 dihydro 1,3-benzoxazines has been studied. Infrared and NMR~H data allow to determine structures of isomers and NMR~3C exhibits electronic and steric effects of substituents.
📜 SIMILAR VOLUMES
The condensation of (1 R,2S) or (lS,2S)-N,N'-dimethyI-l-phenylpropane-l 2-diamines with aldehydes gives respectively two diastereorneric 2-alkyl-l,3,4-trimethyI-S-phen limidazolidines. At thermodynamical equilibrium the major isomer in the erythro series is this one where t f ! e substituents at pos