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Any of three isomeric compounds, C7H9N, used to make dyes.


(tɒˈljuːɪˌdiːn) or


(Elements & Compounds) an amine derived from toluene existing in three isomeric forms; aminotoluene. The ortho- and meta- isomers are liquids and the para- isomer is a crystalline solid. All three are used in making dyes. Formula: C6H4CH3NH2
[C19: from tolu(ene) + -ide + -ine2]


(təˈlu ɪˌdin, -dɪn)

any of three isomeric amines having the formula C7H9N, derived from toluene: used in the manufacture of dyes and drugs.
[1840–50; tolu (ene) + -idine]
References in periodicals archive ?
Aromatic amines such as benzidine, 1-naphthylamine, and 4-methylaniline have been recognized as potential carcinogens [25, 26].
Dyes No [R.sub.1] [R.sub.2] [R.sub.3] [D.sub.11] N[O.sub.2] H H [D.sub.12] H H N[O.sub.2] [D.sub.13] H N[O.sub.2] H [D.sub.14] Cl H N[O.sub.2] [D.sub.15] C[H.sub.3] H C[H.sub.3] [D.sub.16] H Cl H [D.sub.17] H H Cl [D.sub.18] H H OH [D.sub.19] H H C[H.sub.3] [D.sub.20] C[H.sub.3] H H Dyes No [R.sub.4] Amines 1(a-j) [D.sub.11] H 2- Nitroaniline [D.sub.12] H 4- Nitroaniline [D.sub.13] H 3 -Nitroaniline [D.sub.14] Cl 2,6 -Dichloro-4-nitroaniline [D.sub.15] H 2,4-Dimethylaniline [D.sub.16] H 3-Chloroaniline [D.sub.17] H 4-Chloroaniline [D.sub.18] H 4-hydroxyaniline [D.sub.19] H 4-Methylaniline [D.sub.20] H 2-Methylaniline The number of azo group is almost one for each dye.
Compound 2 was allowed to react with primary amines, namely, hydrazine hydrate, 4-methylaniline, 4-methoxyaniline, and/ or 4-aminoaniline, to afford the pyrazolopyranopyrimidine derivatives 6 and 7a-c, respectively (Scheme 2).