SEARCH Articles Figures Tables 4H-1,3-Oxazines 4H-1,3-Oxazines 5,6-Dihydro-4H-l,3-oxazines 5.6- Dihydro-4H-l,3-oxazine Aldehydes from 2-Benzyl-4,4,6-trimethyl-5,6-dihydro, 3(4H)-oxazine 1-Phenylcyclopentanecarboxaldehyde Bromo-5,6-diphenyl-2,3,5,6-tetrahydro-4H-oxazin-2-one Butoxycarbonyl-5,6-diphenyl-2,3,5,6-tetrahydro-4H-oxazin-2-one Dihydro-4H-1,3-oxazines