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.
CHICAGO
, "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.
VANCOUVER
. Synthesis and Characterization of Azospiropyran Photochromic Dyes Based Para Nitro Aniline. Applied Chemistry Today. 2015;10(36):67-78 (In Persian). doi: 10.22075/chem.2018.2637.
