2,5-Dithiacyclopentylideneketene and ethenedithione, S:C:C:S, generated by flash vacuum pyrolysis
作者:Curt Wentrup、Peter Kambouris、Richard A. Evans、David Owen、Graham Macfarlane、Josselin Chuche、Jean Claude Pommelet、Abdelhamid Ben Cheikh、Michel Plisnier、Robert Flammang
DOI:10.1021/ja00008a048
日期:1991.4
characterized by MS, IR, and NMR spectroscopy. 4 is stable in solution at -50-degrees-C. FVP of 4 as well as the isoxazolone derivatives 2 and 3 results in efficient cleavage into ethylene and ethenedithione, S=C=C=S, which is remarkably stable in the gas phase at high temperature, low pressure, and short contact times but extremely unstable in the condensed state or at higher pressures.
2,5-二硫杂环戊基烯酮 (4) 是通过快速真空热解 (FVP) 的 Meldrum 酸衍生物 1 获得的,并通过 MS、IR 和 NMR 光谱进行表征。4 在 -50 摄氏度的溶液中稳定。FVP 4 以及异恶唑酮衍生物 2 和 3 导致有效裂解为乙烯和乙二硫酮,S=C=C=S,在高温、低压和短接触时间的气相中非常稳定,但极其稳定在冷凝状态或更高压力下不稳定。