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THE MECHANISM OF ETHYLENE ELIMINATION FROM THE OXONIUM IONS CH3CH2CH=O+CH2CH3 AND (CH3)2C=O+CH2CH3
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UNSPECIFIED (1992) THE MECHANISM OF ETHYLENE ELIMINATION FROM THE OXONIUM IONS CH3CH2CH=O+CH2CH3 AND (CH3)2C=O+CH2CH3. JOURNAL OF THE CHEMICAL SOCIETY-PERKIN TRANSACTIONS 2 (7). pp. 1033-1039. ISSN 0300-9580.
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Abstract
The reactions of the metastable oxonium ions CH3CH2CH=O+CH2CH3 and (CH3)2C=O+CH2CH3 are reported and discussed. Various mechanisms for ethylene elimination, which is the principal dissociation route for these ions, are considered. It is shown by means of H-2-labelling experiments and analysis of collision-induced dissociation spectra that routes involving ion-neutral complexes pre-empt 'conventional' mechanisms for these processes. In contrast, the behaviour of the lower homologues CH3CH2CH=OR+ and (CH3)2C=OR+ (R = H, CH3) is consistent with the operation of 'conventional' mechanisms for ethylene expulsion. This contrast is interpreted in energetic terms. The significance of these results for the chemistry of homologous and analogous 'onium' ions containing a Z+-R function (Z = O, S, NH, NCH3; R = CnH2n+2m n greater-than-or-equal-to 2) is explained.
Item Type: | Journal Article | ||||
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Subjects: | Q Science > QD Chemistry | ||||
Journal or Publication Title: | JOURNAL OF THE CHEMICAL SOCIETY-PERKIN TRANSACTIONS 2 | ||||
Publisher: | ROYAL SOC CHEMISTRY | ||||
ISSN: | 0300-9580 | ||||
Official Date: | July 1992 | ||||
Dates: |
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Number: | 7 | ||||
Number of Pages: | 7 | ||||
Page Range: | pp. 1033-1039 | ||||
Publication Status: | Published |
Data sourced from Thomson Reuters' Web of Knowledge
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