IR and NMR Spectral Studies of Some 4-(6-methoxy-2-naphthyl)-5,6-dihydro-6-(Substituted Phenyl)-&lt;sup&gt;4&lt;/sup&gt;&lt;i&gt;H&lt;/i&gt;-1,3-Oxazine-2-Amines: Assessment of Substituent
International letters of chemistry, physics and astronomy