摘要:
AbstractDissociative ionization of 1,2‐epoxy n‐alkanes gives rise to abundant [C4H7O]+ ions of structure [CH3OCHCHCH2]+. This conclusion is drawn from metastable ion analysis and from collisional activation spectra. This fragmentation involves the CC ring opening and a 1,4‐H migration leading to the corresponding enol ether [CH3OCHCHCH2R]+. precursor of [CH3OCHCHCH2]+ fragment. The same isomerization scheme applies to 1,2‐epoxy methyl substituted alkanes and 2,3‐epoxy n‐alkanes.