The electron impact mass spectra (EIMS) of 19 permethylated hexopyranosyl-hexitols, monodeuterated at C'-1, four partially trideuteriomethylated analogues, and some other permethylated hexopyranosides have been investigated. In the formation of the A, ion from the hexopyranosyl-hexitols, only a mino
Mass spectra of alditol trifluoroacetates
β Scribed by O. S. Chizhov; B. A. Dmitriev; B. M. Zolotarev; A. Ya. Chernyak; N. K. Kochetov
- Publisher
- John Wiley and Sons
- Year
- 1969
- Tongue
- English
- Weight
- 252 KB
- Volume
- 2
- Category
- Article
- ISSN
- 1076-5174
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β¦ Synopsis
The trifluoroacetyl derivatives of alditols are convenient compounds for mass spectrometric investigation as they are easily obtainable and highly volatile. They show simple fragmentation patterns with intensive peaks in the high mass range. Trifluoroacetates of alditols may be used for detection and location of deoxy groups in the molecule.
* These fragments and related ones of C, series of deoxy hexitols are absent in mass spectra.
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Electron ionization mass spectra for trifluoroacetate (TFA) derivatives of aldose, ketose, and deoxyaldose O-methyloximes are reported. Typical fragmentation patterns include loss of F, CH,O, CF,CO, or CF,CO, fragments from the generally observable parent ion, as well as cleavage between each of the
Electron impact mass spectra of some per-0-benzoyl-alditols and -aldobiitols are reported and the major fragmentation pathways are discussed.