Skeletal-rearrangement fragments in the mass spectra of β-thiopropionic acid derivatives

JH Bowie, DB Cobb, L Dalgaard, JO Madsen…

Index: Bowie,J.H. et al. Australian Journal of Chemistry, 1969 , vol. 22, p. 1207 - 1217

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Abstract

Abstract The mass spectra of S-alkyl-β-thiopropionic acids contain skeletal-rearrangement ions which arise by hydroxyl migration to a carbonium-ion centre followed by elimination of a neutral molecule (eg ketene or formaldehyde). In contrast, those of methyl S-alkyl-β- thiopropionates contain peaks which are formed by methoxyl migration to sulphur, followed by loss of ketene.

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