Electron Impact Mass Spectra of Some Bis-(2-benzothiazolyl)furans and Bis-(2-benzothiazolyl)thiophenes

✍ Scribed by Grace Karminski-Zamola; Vesna Tralić-Kulenović; Lelja Fišer-Jakić; Miroslav Bajić; David W. Boykin

• Publisher: John Wiley and Sons
• Year: 1996
• Tongue: English
• Weight: 306 KB
• Volume: 10
• Category: Article
• ISSN: 0951-4198
• DOI: 10.1002/(sici)1097-0231(199610)10:13<1621::aid-rcm619>3.0.co;2-r

✦ Synopsis

The electron impact mass spectra of some bis-(2-benzothi~lyI)furans and bis-(2-benzothiazolyl)thiophenes have been recorded and the identity of various ions in the mass spectra established. Compounds 1 and 2 present model substances and it is found that their fragmentation pathway is similar to the mono-(2-benzothiazoles).

Compounds where the benzothiazolyl groups are directly substituted on the furan nuclei, but in different positions, exhibit two main pathways of fragmentation: fragmentation of the furan nucleus and fragmentation of the benzothiazole nucleus. Other compounds studied show specific fragmentation characteristic for divinyl furan compounds and for compounds with a phenyl substituent between two heterocyclic nuclei. C 4 w + C$B+ lc,k mlz 82 1r.w d z 69 Scheme 1.