Aminoacyl adenylate pentacoordinated phosphorus compounds were analyzed by field desorption (FD) and fast atom bombardment (FAB) mass spectrometries, together with the B/E linked scan technique, and their mass spectral fragmentation pathways were investigated. For the five bonds (one P-N bond, three
Mass spectra of pentacoordinate spirobicyclic imino(alkyl)acetoxyphosphoranes
β Scribed by Hua Fu; Zhaolong Li; Yufen Zhao; Danbin Guo; Hongzhan Xiao; Jingzun Wang; Yi Wu
- Publisher
- John Wiley and Sons
- Year
- 1997
- Tongue
- English
- Weight
- 117 KB
- Volume
- 11
- Category
- Article
- ISSN
- 0951-4198
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Fragmentation pathways of the title compounds under electron impact were compared to those of their (1aryl)substituted analogs reported earlier. The main fragmentation route of the M Γ ions is the sulphamide N-S bond cleavage leading to [M Γ ArSO 2 ] ions. No loss of the alkyl substituents from the
Tandem mass spectrometric behaviour was studied for a small combinatorial library of alkyl 3-hydroxy-5-(4'-nitrophenoxy) benzoates (A1-A5) and alkyl 3-hydroxy-5-(2', 4'-dinitrophenoxy) benzoates (B1-B5). The spectra were recorded by negative ion electrospray low-energy collision induced dissociation