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Processus de Dissociation en Spectrometrie de Masse. III. — Dérivés hétérocycliques oxygénés: Dioxolane, 2-me-1, 3-Dioxolane, Dioxane et 2, 4, 6-Triméthyl-1, 3, 5-Trioxane

✍ Scribed by Jacques Collin

Publisher
Wiley (John Wiley & Sons)
Year
2010
Weight
316 KB
Volume
69
Category
Article
ISSN
0037-9646

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✦ Synopsis

Abstract

A study of the mass spectra of dioxygenated heterocyclic compounds is made and an interpretation of the cracking patterns proposed. A comparison with furanic derivatives has been established and discussed.

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✍ D. Tytgat; M. Gelbcke 📂 Article 📅 2010 🏛 Wiley (John Wiley & Sons) ⚖ 339 KB 👁 1 views

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