The Research To The Synthsis And Properties Of 2-Methyl-3-amino-5phenyl-7-(Dimethylamino) Phenazinium Chloride

Dyestuff,which is a raw material for dyeing and printing,is supporting textile and apparel industry.Therefore,the development of textile industry has a close relationship with dyestuff industry.In this paper,synthesis of 2-Methyl-3-amino-5phenyl-7-(dimethylamino) phenazinium Chloride(PNR).PNR is a kind of environment-friendly phenazine dyes, more particularly,phenazine dyes suitable as intermediates for leuco phenazine dyes. Essentially all of the phenazine dyes capable of providing red,orange,and magenta hues have unsubstituted amine groups at the 3- or 7-position,or both.PNR are applied to numerous substrates for example to silk,cotton,textiles,leather,plastic,paper etc.in liquid form.The experiment is made up of three parts.Firstly,The nucleophilic reaction of 4-Bromonitrobenzene and Dimethylamine hydrochloride for synthesize the p-nitro-N,N-dimethylaniline.In part two,Synthesis of p-amino-N,N-dimethylaniline by catalytic reduction of p-nitro-N,N-dimethylaniline with hydrazine in the presence of FeCl₃·/AlCl₃/C complex catalyst was studied.Part three,Synthesis of PNR by oxidation of p-amino-N,N-dimethylaniline.and then condensation with o-toluidine and aniline.The reaction conditions were inverstigated.The environmental type dyestuff has already become a requirement for dyeing in the world texitle market.In this paper,PNR was synthesized and the chemical structure was characterized by UV-Vis,NMR and IR spectra.The progress is mild reaction condition,using cheaper and environment-friendly raw materials and convenient to operation.The result showed that this technique had many advantages such as a higher economic value.They are imbused with an importent signficance for the development of the dyestuff industry.