Background: A simple and eco-friendly synthetic protocol for synthesizing naphtho[
e]bis[1,3]oxazines in good yields has been developed by using one-pot three-component
Mannich-type condensation cyclization reaction of various dihydroxynaphthalenes with primary
amines and formaldehyde in water at 80-90°C.
Methods: The chemical structures of synthesized monomers were confirmed by IR, 1H-NMR,
mass and elemental analysis.
Result: Some of these compounds exhibited promising processing window for polymerization according
to their differential scanning calorimetric analysis.
Keywords: Eco-friendly method, Mannich-type reaction, naphtho[e]bis[1, 3]oxazines, one-pot synthesis, polynaphthoxazines,
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