Tirohia te wāhanga i raro nei, kātahi ka whakautu i te pātai i muri mai i te reo kotahi me te wāhanga:  Passage: I te whakawera i te amine tuatahi me te tote N-2,4-dinitrophenyl-pyridinium (2), ko te taapiri o te amine ka arahi ki te whakatuwheratanga o te mowhiti pyridinium. Ko te tāpiritanga tuarua o te amine ka ahu ki te whakakorenga o te 2,4-dinitroaniline (5) me te hanganga o te tote König (6a me 6b). Ka taea e te isomer trans-cis-trans o te tote König (6a) te urupare ma te whakariterite sigmatropic, ma te taapiri nucleophilic ranei o te takawaenga zwitterionic hei whakaputa i te takawaenga huringa (7). Kua tūtohutia tēnei hei taahiraa whakataunga auau. I muri i te whakawhitinga o te proton me te whakakore i te amine, ka hangaia te ion pyridinium (9) e hiahiatia ana.  Pātai: He aha te mea ka tupu ina tāpirihia he amine matua?
te whakatuwheratanga o te mowhiti pyridinium