GAS-PHASE STUDIES ON REDUCTIVE CYCLIZATION TO A BENZOTRIAZOLE DERIVATIVE FROM ITS PRECURSORS BY LIQUID-CHROMATOGRAPHY THERMABEAM TANDEM MASS-SPECTROMETRY

被引:3
作者
KUILA, D [1 ]
HUANG, SW [1 ]
机构
[1] HOECHST CELANESE CORP,ADV TECHNOL GRP,1901 CLARKWOOD ROAD,CORPUS CHRISTI,TX 78469
来源
ORGANIC MASS SPECTROMETRY | 1994年 / 29卷 / 05期
关键词
D O I
10.1002/oms.1210290504
中图分类号
O62 [有机化学];
学科分类号
070303 ; 081704 ;
摘要
Liquid chromatography/Thermabeam mass spectrometry/mass spectrometry was carried out on the starting material, 2-nitro-2'hydroxy-5'-acetylazobenzene (1) and the intermediate N-oxide (2) formed by dithionite reduction of the starting material (1). The mass spectra of (1) and the intermediate (2) showed an abundant fragment ion that corresponds to that of 2-(2'-hydroxy-5'-acetylphenyl)benzotriazole (3). These results show that 3 could be formed from both 1 and 2. The formation of 3 in the gas phase is analogous to the chemical reduction processes of the 2-nitroazobenzene derivative 1 and the N-oxide 2 in solution.
引用
收藏
页码:226 / 231
页数:6
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