- 作者: 林孝道 ; 李明熙 ; 郭悅雄
- 作者服務機構: Dept. of Applied Chemistry, Chingyi Women's College of Arts and Science, R.O.C.
- 中文摘要: The mass spectra of a series of 6-hydroxy-3-pyrones and their derivatives showed a marked dependence upon the nature of the substituent. The "retro-Diels-Alder" reaction is the primary decomposition observed for the parent compounds, while the . alpha.-cleavage (substituent loss) competes with the"retro-Diels-Alder" reaction for their derivatives. An interpretation of this difference based on the charge location and the thermochemical data is proposed.
- 英文摘要: --
- 中文關鍵字: 3-Pyrones; Retro-Diels-Alder Fragmentation; Substituent Loss; Eims; Mass Spectrum; Electron Impact Mass Spectrum; .Alpha.- Cleavage
- 英文關鍵字: 3-喃酮;反狄爾斯-阿德爾裂解;取代基損失;質譜;電子撞擊質譜;.alpha. -裂解