Electron Capture Mass Spectrometry of Phenylsulfonyl-1,4-benzoquinones and 2-Phenylsulfonyl-1,4-naphthoquinone
Electron capture mass spectrometry of phenylsulfonyl‐1,4‐benzoquinone and some of its di‐ and trimethyl homologues and of 2‐phenylsulfonyl‐1,4‐naphthoquinone, using CO2‐buffered thermal electrons demonstrates the existence in the plasma of two competing processes: loss of C6H4, suggested to be benzy...
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| Published in: | Rapid communications in mass spectrometry Vol. 11; no. 7; pp. 753 - 756 |
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| Main Authors: | , , , |
| Format: | Journal Article |
| Language: | English |
| Published: |
Chichester, UK
John Wiley & Sons, Ltd
22-04-1997
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| Online Access: | Get full text |
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| Summary: | Electron capture mass spectrometry of phenylsulfonyl‐1,4‐benzoquinone and some of its di‐ and trimethyl homologues and of 2‐phenylsulfonyl‐1,4‐naphthoquinone, using CO2‐buffered thermal electrons demonstrates the existence in the plasma of two competing processes: loss of C6H4, suggested to be benzyne, from the semiquinone anion radical, and loss of C6H5, as a phenyl radical, from the corresponding hydroquinone formed by concomitant reduction of the quinone in the source. Fragmentation to C6H4 predominates when the 3‐position (vicinal to phenylsulfonyl) of the quinone is unsubstituted. Similar fragmentations are observed for the corresponding phenylsulfonylhydroquinones, which are oxidized in situ to the quinones. Fragmentation mechanisms are suggested. © 1997 John Wiley & Sons, Ltd. |
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| Bibliography: | SERC (now EPSRC) ark:/67375/WNG-QJ04HRTZ-8 istex:CC158FAA8BEF2D376D559D4A1022B81C4D658934 ArticleID:RCM800 |
| ISSN: | 0951-4198 1097-0231 |
| DOI: | 10.1002/(SICI)1097-0231(19970422)11:7<753::AID-RCM800>3.0.CO;2-8 |