A Novel Method for the Preparation of 3-Amino-4-hydroxybenzenesulfonamide Precursors of “Acid Alizarin Violet N” Derivatives
作者:Alan R. Katritzky、Jing Wu、Stanislaw Rachwal、David Macomber、Terrance P. Smith
DOI:10.1080/00397919308009795
日期:1993.2
Abstract Chlorosulfonation of 2-nitroanisole gave 4-methoxy-3-nitrobenzenesulfonyl chloride (7) which was converted with N-butyl(3-phenylpropyl) amine into benzenesulfonamide (8). Hydrolysis of the ether and reduction of the nitro group of 8 followed by diazotization and coupling with 2-naphthol gave N-Butyl-N-(3-phenylpropyl)-4-hydroxy-3-(2-hydroxy-1-naphthyl) azobenzenesulfonamide (1d).
摘要 2-硝基苯甲醚氯磺化得到4-甲氧基-3-硝基苯磺酰氯(7),再用N-丁基(3-苯丙基)胺将其转化为苯磺酰胺(8)。醚的水解和 8 的硝基还原,然后重氮化并与 2-萘酚偶联得到 N-丁基-N-(3-苯丙基)-4-羟基-3-(2-羟基-1-萘基)偶氮苯磺酰胺(1d)。