Synthesis and electron impact mass spectra of 3-substituted 2-acylaminoindazoles
β Scribed by Antigoni Kotali; Philip A. Harris
- Book ID
- 112131510
- Publisher
- Journal of Heterocyclic Chemistry
- Year
- 1996
- Tongue
- English
- Weight
- 147 KB
- Volume
- 33
- Category
- Article
- ISSN
- 0022-152X
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The electron impact mass spectra of fifteen 5-substituted-2-aminc&2-oxazolines classified in two series according to the nature of the substituent are discussed. For the 5-(l-aryl-4-piperazino)methyl compounds the main fragments are derived from the arylpiperazine moiety, whereas for the phenoxymeth
Fragmentation pathways of the title compounds under electron impact were compared to those of their (1aryl)substituted analogs reported earlier. The main fragmentation route of the M Γ ions is the sulphamide N-S bond cleavage leading to [M Γ ArSO 2 ] ions. No loss of the alkyl substituents from the
Table 1. The EI mass spectra, showing peaks of >5% relative abundance (RA), of compounds 1-10, using 70 eV electrons Compound m/z (% RA) 1 315(M, 55) 314(10) 161(10) 160(89) 159(13) 107(12) 106(100) 105(11) 104(9) 91(33) 77(22) 65(15) a 2 345(M, 4) 316(7) 315(19) 314(100) 190(11) 175(7) 172(5) 160(1