meta-nitroaniline

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meta-nitroaniline

[¦med·ə ‚nī·trō′an·ə·lən]
(organic chemistry)
NO2C6H4NH2 Yellow crystals that melt at 112.5°C; a toxic material; used as a dye intermediate.
References in periodicals archive ?
The disappearance of OH band from C-28 position of Betulinic acid and emergence of new NH band at 3331 cm-1 and 3334 cm-1 verified the bonding of 2-and 3-nitroaniline derivatives of Betulinic acid, respectively.
Tri and diphenyltin complexes (2-and 3-nitroaniline derivatives) were confirmed by the proton signals at 7.30-7.33 and 7.29-7.31 ppm for phenyl hydrogens.
Structures of Ligands (L1/L2) were confirmed by the formation of amide bond between Betulinic acid and 2 and 3-nitroaniline. It was further confirmed by presence of aniline (2 and 3-nitroaniline) carbon peaks (C-33 to C-38).
In FT-IR spectral analysis appearance of new NH bands at 3331 cm-1 and 3334 cm-1 verified the bonding of 2 and 3-nitroaniline to Betulinic acid and formation of ligands (L1/L2).
Synthesis, Spectral Characterization and Biological Evaluation of Organotin(IV) Complexes of Aniline Derivatives of Naturally Occurring Betulinic Acid
To the vigorously stirred aqueous solution of cyanurated dye 10 (0.570 g, 0.001 mol) at room temperature, was added a solution of 5,5'-Methylenebis(3-nitroaniline) (0.144 g 0.0005mol) in 15 ml water in acidic medium.
Synthesis, Characterization and Applications of High Fastness Reactive Dyes on Cotton Fibers
To study the Pi-Pi interactions between a chiral selector and the enantiomers of an analyte, a Pi- acidic or Pi-basic group would be contained in the molecules of the derivatives of hydantoin-5-acetic acid, so the aromatic amines such as phenylamine, 4methylaniline, 3,5-dimethylaniline and 3-nitroaniline were chosen as derivatization reagents.
The resolution of the 3-nitroaniline derivative of hydantoin-5-acetic acid on the CHIDMB column was the best, but the retention time was too long.
1: the 3-nitroaniline derivative of hydantoin-5-acetic acid, 2: the phenylamine derivative of hydantoin-5-acetic acid, 3: the 4-methylaniline derivative of hydantoin-5-acetic acid, 4: the 3,5-dimethylaniline derivative of hydantoin-5-acetic acid; mobile phase composition on the CHI-DMB column: n-hexane 80%; mobile phase composition on the Chiralcel OD-H column: n-hexane 85%; t 1 : retention time of the first enantiomer; t 2 : retention time of the second enantiomer; Alpha: separation factor; R s : resolution; flow rate: 1.0 ml min -1 ; column temperature: 25 deg C; UV detection wavelength: 254 nm.
The type and concentration of organic modifier were found to influence the retention and resolution of the phenylamine and 3-nitroaniline derivatives of hydantoin-5-acetic acid on the CHIDMB column dramatically.
As a compromise between resolution and retention time, 20% isopropanol in n-hexane was found to be an optimum mobile phase for the phenylamine derivative of hydantoin-5-acetic acid, and 40% isopropanol in nhexane was found to be an optimum mobile phase for the 3-nitroaniline derivative of hydantoin-5-acetic acid.
Table-2: Effect of mobile phase composition on selectivity and resolution of the 3-nitroaniline and phenylamine derivatives of hydantoin-5-acetic acid enantiomers.
Development of High Performance Liquid Chromatographic Method with Pre-Column Derivatization for Determination of Enantiomeric Purity of Hydantoin-5-acetic Acid
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