1- Naphth aldehyde, 2-hydroxy

Further supporting evidence is adduced from the observation that the anils of 2 -methoxy- 1-naphthaldehyde and 2-hydroxy-3-naphth-aldehyde show no marked spectral sensitivity to temperature, polarity... 

Substituted amino naphthols were synthesized with reactions of 1-naphthols and the appropriate aldehydes. Some new 2,4-disubstituted-3,4-dihydro-2/f-naphth [i,2-e][i,i]oxazines that are expected to show biological activities were obtained by the ring-closure reactions with these aminonaphthols and various aldehydes. In addition, substituted-1,3-amino-hydroxy compounds, 2, can be used in chiral ligands synthesis. 

The aldehyde obtained may be transferred to a Iqt-droxy group by - hydrogenation (in case of a fatty acid as starting material, a branched hydroxy fatty acid results) or oxidized by air or oxygen at 20-25 °C with calcium acetate or manganese naphthe-nate as a catalyst to the desired dicarboxylic acid. In protonic solvents (water or methanol), h. yields the acid or their ester directly. 

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