Electron-impact fragmentation of N-substituted 2-aminobenzoxazoles and 2-aminobenzothiazoles
✍ Scribed by H. Ogura; S. Sugimoto; T. Itoh
- Publisher
- John Wiley and Sons
- Year
- 1970
- Tongue
- English
- Weight
- 392 KB
- Volume
- 3
- Category
- Article
- ISSN
- 1076-5174
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## Abstract Examination of the mass spectra of eleven 2‐arylhydrazonopropandioic acid derivatives reveals that a radical ion which is tentatively formulated as a 1__H__‐diazirine species is produced in each case (except for the diphenyl este) by more than one process. Formation of what is formally
## Abstract The 70 eV electron impact mass spectra of six 2‐aminooxazoles are discussed in detail with the aid of exact mass measurements, metastable ion detection in the defocused mode and labelling experiments. The fragmentation is markedly influenced by strong electron donating substituents at t
## Abstract magnified image A Reaction involving chloroformamidinium salts (TCFH **1a**, BTCFH **1b**, DmCFH **1c**, DmPCFH **1d**, BPCFH **1e**) and 2‐aminophenol **9a**, benzene‐1,2‐diamine **9b**, and 2‐aminothiophenol **9c** afforded 2‐aminobenzoxazole **13**, 2‐aminobenzoimidazole **14**, and