On August 1, 2012, Wang, Kai; Jin, Qi; Yu, Faquan; Zhang, Heng; Chi, Ruan; Huang, Ting; Zhang, Xiulan; Wan, Chunjie published a patent.Reference of 3-Amino-7-(diethylamino)-5-phenylphenazin-5-ium chloride The title of the patent was Process for synthesizing janus green b. And the patent contained the following:
The process comprises the following steps: dissolving p-phenylenediamine and N,N-diethylbenzene in acid water, controlling pH of 4-7 in the presence of inorganic oxidant, reacting at (-5)-50 °C, stirring for 0.5-5 h, then adding aniline, increasing temperature to 0-100 °C, reacting for 1-10 h, filtering, concentrating, salting out, filtering, drying filter cake, obtaining methylene violet 3RAX, adding said methylene violet 3RAX into acid water, slowly dripping sodium nitrite aqueous solution, reacting at (-5)-25 °C for 1-5 h, adding N,N-dimethylaniline, reacting for 1-10 h, reducing pressure to dryness, dispersing residue in saturated saline, filtering, and drying filter cake. This process has the advantages of easily obtained raw materials and simple procedures. The experimental process involved the reaction of 3-Amino-7-(diethylamino)-5-phenylphenazin-5-ium chloride(cas: 4569-86-2).Reference of 3-Amino-7-(diethylamino)-5-phenylphenazin-5-ium chloride
The Article related to synthesis janus green b oxidation, Dyes, Organic Pigments, Fluorescent Brighteners, and Photographic Sensitizers: Heterocyclics and other aspects.Reference of 3-Amino-7-(diethylamino)-5-phenylphenazin-5-ium chloride
Referemce:
Chloride – Wikipedia,
Chlorides – an overview | ScienceDirect Topics