[{"from": "human", "value": "Could you give me a brief overview of this molecule? [C][=C][C][=C][C][=C][Branch1][=Branch2][C][=C][C][Ring1][=Branch1][=C][Ring1][#Branch2][N]"}, {"from": "gpt", "value": "The molecule is an aromatic amine. It is used to make azo dyes. It is a known human carcinogen and has largely been replaced by less toxic compounds. 2-Aminonaphthalene is prepared by heating 2-naphthol with ammonium zinc chloride to 200-210 \u00b0C; or in the form of its acetyl derivative by heating 2-naphthol with ammonium acetate to 270-280 \u00b0C. It forms odorless, colorless plates which melt at 111-112 \u00b0C. It gives no color with ferric chloride. When reduced by sodium in boiling amyl alcohol solution it forms alicyclic tetrahydro-3-naphthylamine, which has most of the properties of the aliphatic amines; it is strongly alkaline in reaction, has an ammoniacal odor and cannot be diazotized. On oxidation it yields ortho-carboxy-hydrocinnamic acid, HO2CC6H4CH2CH2CO2H. Numerous sulfonic acidsderived from 2-aminonaphthalene are known. Of these, the delta-acid and Bronner's acid are of more value technically, since they combine with ortho-tetrazoditolyl to produce fine red dye-stuffs. 2-Aminonaphthalene is found in cigarette smoke and suspected to contribute to the development of bladder cancer."}]