摘要:
AbstractPositive‐ion, methane‐mediated chemical ionization mass spectra were measured for simple bifunctional aromatic compounds of the type m‐XCH2C6H4CH2Y, where X = NH2 and N(CH3)2, and Y = OH and OCH3. Essentially only three peaks of ions, [MH]+, [MH – XH]+ and [MH – YH]+, have appeared for each compound. Since the two functional groups XCH2– and YCH2– do not interact with each other after protonation or after fragmentation, they are assumed to be protonated and to undergo fragmentations independently. The relative protonation susceptibility and fraction of fragmenting [MH]+ can be estimated for each functional group in these compounds. A semi‐quantitative interpretation of the observed spectra is presented.