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Electron impact mass spectrometry of 2,2-disubstituted-1,3-benzoxathioles and spiro [1,3-benzoxathioles-2,1′-cycloalkanes]

✍ Scribed by Pietro Traldi; Umberto Vettori; Antonio Maccioni; Gianni Podda

Publisher
John Wiley and Sons
Year
1982
Tongue
English
Weight
297 KB
Volume
17
Category
Article
ISSN
1076-5174

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✦ Synopsis

Abstract

The electron impact mass spectrometric behaviour of a series of 2,2‐disubstituted‐1,3‐benzoxathioles and spiro[1,3‐benzoxathioles‐2,1′‐cycloalkanes] has been studied in detail with the aid of linked scans and exact mass measurements. The structures of the more interesting fragment ions have been confirmed by collisional activation experiments. A precise analogy with the chemical degradative processes, obtained by the action of Grignard reagents on these compounds, is emphasized.

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## Abstract The reaction of benzoxathiole‐3‐oxide with lithiumdiisopropylamide in tetrahydrofuran gave an anion, which was reacted with various aryl‐methyl‐ketones to give 2‐(1‐hydroxy‐1‐arylethyl)‐1,3‐benzoxathiol‐3‐oxide derivatives. The reaction was carried out in different temperature condition