Ring contraction reactions of 2,3‐dihydro‐4 H ‐1,3‐oxazin‐4‐ones under electrospray ionization conditions | Zendy

Ma Yuan | Zendy; Liu Wei | Zendy; Chen Yi | Zendy; Zhao Yufen | Zendy

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Ring contraction reactions of 2,3‐dihydro‐4 H ‐1,3‐oxazin‐4‐ones under electrospray ionization conditions

Author(s) -

Ma Yuan,

Liu Wei,

Chen Yi,

Zhao Yufen

Publication year - 2004

Publication title -

rapid communications in mass spectrometry

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 0.528

H-Index - 136

eISSN - 1097-0231

pISSN - 0951-4198

DOI - 10.1002/rcm.1454

Subject(s) - chemistry , fragmentation (computing) , electrospray ionization , electrospray , mass spectrometry , ionization , stereochemistry , analytical chemistry (journal) , chromatography , organic chemistry , ion , computer science , operating system

The mass spectral behavior of 2,3‐dihydro‐4 H ‐1,3‐oxazin‐4‐ones has been investigated using electrospray ionization multi‐stage mass spectrometry (ESI‐MS n ). All compounds showed a predominant retro‐Diels‐Alder (RDA) fragmentation pathway, and a novel ring contraction reaction by loss of isocynates was also found. The fragmentation mechanisms proposed for 4 H ‐1,3‐oxazin‐4‐ones are supported by ESI‐MS/MS/MS spectra. Copyright © 2004 John Wiley & Sons, Ltd.

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