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Type: Artigo de periódico
Title: Formal gas-phase polar [4+1(+)] cycloaddition of ionized methylene to alpha-dicarbonyl compounds: synthesis of 2-unsubstituted 1,3-dioxoles
Author: Meurer, EC
Cabrini, LG
Gozzo, FC
Eberlin, MN
Abstract: Ion/molecule reactions of +CH2OCH2 with alpha-dicarbonyl compounds were performed via pentaquadrupole mass spectrometry. Besides the previously known [3(+) + 2] 1,3-cycloaddition reaction that forms cyclic 1,3-dioxonium ions, an unprecedented reaction proceeding formally by [4 + 1(+)] cycloaddition of ionized methylene (CH2+) to the alpha-dicarbonyl compounds occurs competitively, leading to the gas-phase synthesis of several ionized 2-unsubstituted 1,3-dioxoles. This novel cycloaddition reaction may therefore be added to the set of methods available for the synthesis of 1,3-dioxoles. Copyright (c) 2006 John Wiley & Sons, Ltd.
Subject: 1,3-dioxoles
ion/molecule reactions
gas-phase synthesis
distonic ions
alpha-dicarbonyl compounds
pentaquadrupole mass spectrometry
Country: Inglaterra
Editor: John Wiley & Sons Ltd
Citation: Journal Of Mass Spectrometry. John Wiley & Sons Ltd, v. 41, n. 6, n. 735, n. 740, 2006.
Rights: fechado
Identifier DOI: 10.1002/jms.1029
Date Issue: 2006
Appears in Collections:Unicamp - Artigos e Outros Documentos

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