Compound

Molecular formula

Molar mass

(g/mol)

Color and appearance

Yield (%)

Elemental analysis Calculated (found) (%)

C

H

N

L₁

C₁₈H₁₇N₃O₂

307

Yellow powder

88.84

62.14 (62.08)

5.54 (5.51)

13.68 (13.62)

L₂

C₁₆H₁₆N₂O₂

268

Yellow powder

82.90

71.64 (71.60)

5.97 (5.92)

10.45 (10.41)

L₃

C₁₃H₁₁N₁O₂

213

Dark orange crystal

92.60

73.24 (73.20)

5.16 (5.05)

6.57 (6.50)