Studies on the Benzoxazine Series. 2- Preparation and 1H and 13C NMR Structural Study of Some Substituted 1,2-Dihydro-4H-3,1-benzoxazines

Article abstract of DOI:10.1002/mrc.1260270804

In addition to the parent compounds, nine methyl-substituted 1,2-dihydro-4H-3,1-benzoxazines with and without N-methyl substitution were prepared.The chain tautomer could only be detected in the case of 1,2-dihydro-2-(p-nitrophenyl)-4H-3,1-benzoxazine in