2-Hydroxy-1-naphthaldehyde → 3-Hydroxy-2-naphthoic (2-hydroxy-1-naphthylmethylene) hydrazide

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Reaction Steps

Following the general procedure of Example 1, condensation of 2-Hydroxy-1-naphthaldehyde and 3-hydroxy-2-naphthoic hydrazide gave a white solid (97%): mp >300° C.; 1H NMR d 12.70 (s, 1 H), 12.25 (br s, 1 H), 11.37 (br s, 1 H); 9.58 (s, 1 H), 8.52 (s, 1 H), 8.33 (d, 1 H, J=8.7 Hz), 7.94 (d, 2 H, J=8.7 Hz), 7.89 (d, 1 H, J=8.1 Hz), 7.78 (d, 1 H, J=8.4 Hz), 7.58 (t, 1 H, J=7.6 Hz), 7.52 (t, 1 H, J=7.5 Hz), 7.41 (m, 2 H), 7.37 (s, 1 H), 7.25 (d, 1 H, J=9.0 Hz); 13C NMR d 163.05, 158.12, 153.88, 147.57, 135.94, 132.90, 131.68, 130.62, 128.90, 128.68, 128.33, 127.79, 127.73, 126.81, 125.85, 123.86, 123.54, 120.98, 119.84, 118.87, 110.62, 108.61; HRMS Calcd for C22H16N2O3 :356.1161, found 356.1151; Anal. (C22H16N2O3) C, H, N.

Provenance & Evidence