56683-64-8Relevant academic research and scientific papers
Mass-Spectrometric Study on Ion-Molecule Reactions of CF3+ with Monosubstituted Benzenes Carrying a Carbonyl Group at Near-Thermal Energies
Tsuji, Masaharu,Aizawa, Masato,Nishimura, Yukio
, p. 1055 - 1063 (1996)
The gas-phase ion-molecule reactions of CF3+ with five monosubstituted benzenes carrying a carbonyl group (PhCOX: X=H, CH3, C2H5, OCH3, OC2H5) have been studied at near-thermal energies using an ion-beam apparatus. The major product channel for PhCHO, PhCOCH3, and PhCOOCH3 is electrophilic addition to the O-atom leading to initial adduct ions, which are 80.3 - 95.0% of the total product ions. Although no initial adduct ions are observed for PhCOC2H5 and PhCOOC2H5, major product ions are formed by electrophilic addition to the O-atom followed by dissociation and molecular eliminations. The reaction mechanism is discussed based on product ion distributions and semi-empirical calculations of the energies of intermediates and products. The results obtained are compared with reported-ion-cyclotron-resonance data for aliphatic carbonyl compounds.
