テトラリン誘導体の研究-3-

概要

論文の詳細を見る
ar-α-Nitrotetrahydronaphthalene and ar-β-nitrotetrahydronaphthalene, respectively, is reduced under neutral reaction and the product is reacted with ammonia and amyl nitrite to give ar-α-nitrosohydroxyaminotetrahydronaphthalene ammonium, mp 130°c (α-reagent), and ar-β-nitrosohydroxyaminotetrahydronaphthalene ammonium, mp 110°c (β-reagent), respectively. Both of these reagents give precipitates with many metal ions, among which the reaction of Fe3+ and Cu2+ are especially sensitive; α-reagent and Fe3+ (0.3 γ/cc.) or β-reagent and Fe3+ (0.1γ/cc. ) in 10% hydrochloric acid solution or both reagents and Cu2+ (5γ/cc. ) in 30% acetic acid solution give precipitates. The complex salt from Fe3+ and both reagents in chloroform gives deep red coloration and the maximum absorption of the complex salt with α-reagent is shown at 385 mμ (log ε 3. 60), and that with β-reagent at 398 mμ(logε 3.73). Thus, colorimetric estimation of Fe3+ (10100 γ/cc.) with α-reagent or Fe3+ (550γ/cc.) with β-reagent can be made in the presence of an equal amount of Cu2+, Al3+, Cr3+, and Mn2+. Although the complex salt of Cu2+ in chloroform gives greenish blue coloration, it cannot be used for quantitative determination on account of a small absorbancy.
社団法人日本分析化学会の論文