The fragmentation patterns of a series of 1-and 2-alkylbenzotriazoles are recorded and interpreted in comparison with available literature data. 1-and 2-Substituted benzotriazoles are readily differentiated on the basis of the relative ease with which a 1-substituted isomer loses nitrogen compared w
Mass Spectra of Amides of 2-Amino-2-thiazoline
✍ Scribed by Marie-Pierre Viallet; Jacques Ulrich; André Boucherle
- Publisher
- John Wiley and Sons
- Year
- 1980
- Tongue
- English
- Weight
- 331 KB
- Volume
- 313
- Category
- Article
- ISSN
- 0365-6233
No coin nor oath required. For personal study only.
✦ Synopsis
Abstract
Five fragmentation patterns of the molecular ions of sixteen amides of 2‐amino‐2‐thiazoline and of one deuteriophenyl derivative are described: when R is a phenyl group substituted in ortho position by an R″ group, the [M‐R″]^+^ ion is the main fragment, whereas in the other cases R″ = substituent in meta or para position it is the ion [M‐H]^+^. The amino⇄imino tautomerism of these molecular ions was studied. In addition, a correlation was found between the fragmentation patterns of the molecules and their pharmacological activities.
📜 SIMILAR VOLUMES
Mass spectra of ten %substituted permethylated trisilanes which include compounds with halo, phenyl and hydrido substituents are reported. Labelling with a C03 group disclosed that a terminal silicon is more favourable as a charge position for the trisilyl cation than the middle atom and that a-and
1998 mass spectra mass spectra (organic substances) K 6000 ## 03 -031 Mass Spectra of 1-and 2-Alkylbenzotriazoles. -The fragmentation patterns of a series of title compounds like (I) and (II) (12 examples, resp.) are recorded and interpreted in comparison with available literature data. -
Preparation of 2,5-Disubstituted 2-Thiazolines. -A new synthetic access to the title thiazolines is presented. The isothiocyanates (I) and (VI), prepared by chloroarylation of allylisothiocyanate with aryldiazonium chlorides, undergo cyclization in the presence of bases to afford the target thiazol