Naftalenos

5,6,7,8-Tetrahydronaphthalene-2-carbaldehyde is an indole derivative that is used as a precursor to produce other compounds. It is an inducers of enzymes (e.g., hydroxylase) and has been shown to increase the production of toxic metabolites such as cyclized products. 5,6,7,8-Tetrahydronaphthalene-2-carbaldehyde can be synthesized from anthracene by reacting it with acetone and hydrochloric acid. This compound can be converted into a variety of derivatives including esters and zoxazolamine. 5,6,7,8-Tetrahydronaphthalene-2-carbaldehyde also has carcinogenic properties and has been shown to cause cancer in rats when injected or orally administered in high doses.

1-Nitroso-2-naphthol is a copper complex that is used as an analytical reagent for the determination of nitrogen content in organic compounds. It has been shown to have linear calibration curves with a detection limit of 0.01% nitrogen at a concentration of 20 ppm. The thermodynamic data for the formation of this complex is available and includes free energy, enthalpy, entropy, and Gibbs free energy values. A reaction mechanism has also been proposed for this compound. 1-Nitroso-2-naphthol has been shown to chelate ligands such as picolinic acid and matrix effects on its electrochemical impedance spectra can be seen. Pharmaceutical preparations containing 1-nitroso-2-naphthol are on the market as treatment for gastric ulcers and duodenal ulcers.

6-Hydroxy-2-naphtoic acid is an amide that is hydrolyzed to 6-hydroxybenzoic acid and formamide. It has been used as a viscosity modifier in the synthesis of polymers. 6-Hydroxy-2-naphtoic acid can be produced by a borane-tetrahydrofuran complex reaction with naphthalene. This reaction also produces p-hydroxybenzoic acid, which can then be converted to hydroxybenzoic acid with hydrochloric acid. The structural analysis of this compound has been performed using fluorescence probes and an inorganic acid.