| Abstract
| - Using direct infusion electrospray ionization mass and tandem mass spectrometric experiments [ESI-MS(/MS)], we have performed on-line monitoring of some reactions used to form Tröger's bases. Keyintermediates, either as cationic species or as protonated forms of neutral species, have been interceptedand characterized. The role of urotropine as the methylene source in these reactions has also been accessed.Reaction pathways shown by ESI-MS(/MS) have been probed by gas-phase ion/molecule reactions, andan expanded mechanism for Tröger's base formation based on the mass spectrometric data has beenelaborated.
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