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- W2036340462 abstract "It is shown by tandem mass spectrometry that Curie-point pyrolysis of saturated α,ω-dicarboxylic acids HOOC(CH2)nCOOH (n= 1–6) leads mainly to the formation of intramolecular anhydrides and cyclic ketones. In some cases products are formed which must be due to intermolecular interactions such as acetone formation for n= 1 and hydroxybenzoic acid formation for n= 3. Mechanisms for the formation of these products are presented where 1,5-hydrogen shifts from activated positions to a carbonyl group play a crucial role. The unsaturated dicarboxylic acids HOOC(C2H2)COOH and HOOC(C3H4)COOH show, in addition to structure dependent dehydration reactions, elimination of carbon dioxide. The latter reaction proceeds in some cases via a 1,5-hydrogen shift from the carbonyl group to the double bond, but also by a 1,4-hydrogen shift from the carboxy-group to the double bond followed by a 1,2-hydrogen shift prior to or during decarboxylation seems to occur as suggested by the products generated." @default.
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- W2036340462 date "1984-01-01" @default.
- W2036340462 modified "2023-10-14" @default.
- W2036340462 title "Curie–point pyrolysis of saturated and unsaturated dicarboxylic acids studied by tandem mass spectrometry" @default.
- W2036340462 doi "https://doi.org/10.1039/p29840001065" @default.
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