Fragmentation D'Azoles Sous L'Impact Electronique. IX. Isomérisation du benzothiazole avant dégradation

The M-HCN+. ion observed in the mass spectrum of benzothiazole is the result of two degradation processes:i) specific fragmentation of the heterocyclic part of the molecule and ii) isomerisation into an o-mercaptobenzonitrile structure which eliminates HCN and CS. This latter process predominates for low-energy molecular ions.