Mass spectrometry of benzyne and cyclopentadienylideneketene
Mass spectrometry of benzyne and cyclopentadienylideneketene
复制标题
苯炔和环戊二烯基乙烯酮的质谱测定
DOI：
--
复制
发表时间：
2010
期刊：
影响因子：
--
通讯作者：
C. Wentrup
中科院分区：
文献类型：
--
作者：
Thomas Monsandl;G. Macfarlane;R. Flammang;C. Wentrup
采用在线质谱法研究了闪蒸真空热裂解反应中环戊二烯烯2和苯1的生成。化合物13、14和15都含有烯酮2，在高温条件下分解为苯和CO。在中和-再电离实验中，环戊二烯- 2在微秒时间尺度上是稳定的。m/ z76的14、15和5的碰撞激活质谱分析表明，C6H4•+离子在质谱仪中最可能发生开环。
The formation of cyclopentadienylideneketene 2 and benzyne 1 in flash vacuum thermolysis reactions is investigated by on-line mass spectrometry. Compounds 13, 14, and 15 all afford ketene 2, which decomposes to benzyne and CO in the high-temperature regime. Cyclopentadienylideneketene 2 is stable on the microsecond time-scale of neutralization-reionization experiments. Collisional activation mass spectrometry of m/z 76 from 14, 15, and 5 indicates that the C6H4•+ ions most likely undergo ring opening in the mass spectrometer.