In the electron impact mass spectra of some 2-thiouridines a prominent base +41 (b+C,HO) peak was found. The sulphur atom at the 2 position facilitates its formation.
The formation of the styryl ion in the mass spectra of cinnamyl compounds
β Scribed by E. F. H. Brittain; J. P. Kelly; W. L. Mead
- Publisher
- John Wiley and Sons
- Year
- 1969
- Tongue
- English
- Weight
- 184 KB
- Volume
- 2
- Category
- Article
- ISSN
- 1076-5174
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β¦ Synopsis
The formation of the styryl ion PhCH=CH in the mass spectra of some cinnamic compounds is shown to occur via the intermediate formation of the cinnamoyl ion Ph-CH=CH-C=O rather than by direct cleavage of the bond CL to the double bond.
π SIMILAR VOLUMES
The most prominent ion in the mass spectra of C,F,CH,X (X = H, Br, CH:CH,, COCI, and CH,C6F5) is C,F5H2+, formulated as the pentafluorotropylium cation. This ion is also found, in an amount comparable to the parent ion, in the spectrum of (CBF5)\*CH2. The heptafluorotropylium cation is found similar
## Abstract A series of Reissert compounds containing the quinoline, isoquinoline and phthalazine nuclei show the common feature in their mass spectra of the initial loss of the Nβsubstituent and either of the substituents attached to the adjacent carbon atom.
The methane negative-ion chemical ionization (NCI) mass spectrum of chlorprothixene shows an unusual MHion. This ion can be accounted for by electron capture followed by H transfer from the reagent gas. The most probable site of electron attachment was concluded to be related to the sulfur atom of t