nitro-derived of azospiroptran has been synthesized by the reaction of  Fischer's base with 5-((4-nitrophenyl)diazenyl) 2-hydroxy benzaldehyde. 5-((4-nitrophenyl)diazenyl) 2-hydroxy benzaldehyde was obtained from the diazocoupling reaction of para nitro aniline with 2-hydroxy benzaldehyde.With reduction NO2 group another-derived of azospiropyran was obtained. These compounds were characterized by IR and 1H,13C-NMR spectral studies. Investigating their photochromic properties   showed an increasing rate of coloration reaction in the present of substitution NH2.
(2015). Synthesis and Characterization of Azospiropyran Photochromic Dyes Based Para Nitro Aniline. Applied Chemistry Today, 10(36), 67-78. doi: 10.22075/chem.2018.2637.
MLA
. "Synthesis and Characterization of Azospiropyran Photochromic Dyes Based Para Nitro Aniline", Applied Chemistry Today, 10, 36, 2015, 67-78. doi: 10.22075/chem.2018.2637.
HARVARD
(2015). 'Synthesis and Characterization of Azospiropyran Photochromic Dyes Based Para Nitro Aniline', Applied Chemistry Today, 10(36), pp. 67-78. doi: 10.22075/chem.2018.2637.
VANCOUVER
Synthesis and Characterization of Azospiropyran Photochromic Dyes Based Para Nitro Aniline. Applied Chemistry Today, 2015; 10(36): 67-78. doi: 10.22075/chem.2018.2637.
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