Organic solvent-soluble metal-azo and metal-azomethine dyes
申请人:Minnesota Mining and Manufacturing Company
公开号:US05314998A1
公开(公告)日:1994-05-24
Metal-azo dyes with excellent solubility in organic media are provided. The metal-containing dyes of the present invention have a nucleus of the formula: ##STR1## wherein the substituents have the meaning given in the description. Dye-donor sheets comprising the above-mentioned dyes are also disclosed.
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).