𝔖 Bobbio Scriptorium
✦   LIBER   ✦

Etude de la fragmentation par impact électronique de dérivés du benzothiazole

✍ Scribed by Saturnin Claude; Raffaele Tabacchi; Laurent Due; Rudolf Fuchs; Karl-Josef Boosen


Publisher
John Wiley and Sons
Year
1980
Tongue
German
Weight
582 KB
Volume
63
Category
Article
ISSN
0018-019X

No coin nor oath required. For personal study only.

✦ Synopsis


Study of Electron‐Impact Fragmentation of Benzothiazole Derivatives

The mass spectra of eighteen substituted benzothiazoles are reported and discussed. All these compounds are thermodynamically stable and give an intense molecular ion, which undergoes different types of fragmentation depending on the nature of the substituent which is rarely eliminated directly. β‐Cleavage with respect to the heterocyclic double bond is often observed. Specific ^2^H‐, ^13^C‐, ^15^N‐ and ^34^S‐labelling have been used in order to confirm the fragmentation patterns.


📜 SIMILAR VOLUMES


Etude de la fragmentation par impact éle
✍ Saturnin Claude; Raffaele Tabacchi; Laurent Duc; Jean-François Marrel 📂 Article 📅 1981 🏛 John Wiley and Sons 🌐 German ⚖ 311 KB

**Study of Positive and Negative Ions Electron Impact Fragmentation of 2‐Amino‐benzothiazole Nitro Derivatives** The positive and negative ions mass spectra of 2‐amino‐4,6‐dinitrobenzothiazole (**1**), 2‐amino‐4‐nitrobenzothiazole (**2**), 2‐amino‐6‐nitrobenzothiazole (**3**) are reported and discu

Etude des mécanismes de réarrangement da
✍ Gérard A. Singy; Armand Buchs 📂 Article 📅 1973 🏛 John Wiley and Sons 🌐 German ⚖ 582 KB

## Abstract The fragmentation modes of 3‐benzoyloxy‐cyclopentene and of 4‐benzoyloxy‐cyclopentene have been studied on deuterium‐labelled analogues. A mathematical model is proposed for the study of the rearrangement reactions which occur during the expulsion of H~2~O and of \documentclass{article}

Etude des dérivés de l'indigo IX
✍ Henri de Diesbach; Miro Capponi; Jean Farquet 📂 Article 📅 1949 🏛 John Wiley and Sons 🌐 German ⚖ 783 KB

## Abstract Il est proposé de nouvelles formules pour le jaune d'indigo 3 G et le jaune Höchst U, qui contiendraient un noyau indolique et un noyau hétérocyclique heptagonal. Il est donné une série d'arguments pour justifier ces formules, surtout la présence d'un noyau indolique.

Conformations Privilégiées de Dérivés de
✍ P. Meunier; M. Coustale; J. Arriau 📂 Article 📅 2010 🏛 Wiley (John Wiley & Sons) ⚖ 484 KB 👁 1 views

indicates that nm planar u n f m t i c m are p -t in vapour phase and ncn polar solutions. m e existence of steric StraFn within dibraIcbithiCphens induces an increase of the twist angle. An evaluatim of this angle is carried out for eacfi carpound. An experimental and theoretical sb3y of the W abs