Reduction induced by ion beams: hydrogenation of nitrogen-containing heterocycles and quinones in molecular secondary ion mass spectrometry

Fragmentation reactions using electrospray ionization mass spectrometry: an important tool for the structural elucidation and characterization of synthetic and natural products

“…5 The molecular ion formation is more prone to occur in positive mode than radical anion formation in negative mode. [6][7][8][9] Considering all the ionization possibilities presented in Fig. 1B Daniel Pecoraro Demarque obtained a B.Sc.…”

Birch Reduction of Benzene in a Low‐Temperature Plasma

“…Unlike metal-catalyzed hydrogenations, in which molecular hydrogen is used as the hydrogen source, in the Birch reduction an alcohol functions as the proton donor while the alkali metal acts as an electron donor, with cyclohexadienes being formed as the reduction products. Partial reduction of nitrogen-containing aromatic compounds has been encountered in the gas phase, [6,7] however, there are no reports of gas-phase dihydrogenation of benzene that give significant yields or selectivity. [8] Figure 1 shows the experimental setup used for conducting the plasma processing of organic compounds (for details see the Supporting Information).…”

Birch Reduction of Benzene in a Low‐Temperature Plasma

“…Unlike metal‐catalyzed hydrogenations, in which molecular hydrogen is used as the hydrogen source, in the Birch reduction an alcohol functions as the proton donor while the alkali metal acts as an electron donor, with cyclohexadienes being formed as the reduction products. Partial reduction of nitrogen‐containing aromatic compounds has been encountered in the gas phase,6, 7 however, there are no reports of gas‐phase dihydrogenation of benzene that give significant yields or selectivity 8…”