SEARCH Articles Figures Tables Pyridination reaction Pyridine, reactions Pyridines, 1,2-dihydroDiels-Alder reactions acyl nitroso compounds Pyridines, 1,2-dihydroDiels-Alder reactions nitrosobenzene Pyridines, 1,2-dihydroDiels-Alder reactions synthesis Pyridines, 1,2-dihydroDiels-Alder reactions via hetero electrocyclization