Mass Spectrometry of Benzyne and Cyclopentadienylideneketene
AUSTRALIAN JOURNAL OF CHEMISTRY(2010)
摘要
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 center dot+ ions most likely undergo ring opening in the mass spectrometer.
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关键词
combinatorial,educational,pharmaceutical chemistry,mass spectrometry,organic chemistry,biological chemistry,density functional theory,self assembly,spectroscopy,surface chemistry,combinatorial chemistry,electrochemistry,nanotechnology,medicinal chemistry,enzymes,biosensors,benzyne,ab initio calculations,inorganic chemistry,reaction mechanisms,catalysis,peptide,supramolecular chemistry,colloids,green chemistry,macromolecules,polymer chemistry,interfaces,amino acids,analytical chemistry,computational chemistry,crystal structures,crystallography,physical chemistry,structure,kinetics,biocatalysis,photochemistry,ionic liquids,sensors,proteins,quantum chemistry
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