38610-48-9

Upstream product

• 104-94-9 4-methoxy-aniline 
• 6971-33-1 4-methyl-2-nitro-1-nitrosobenzene 
• 38608-16-1 (4-Methoxy-phenyl)-(4-methyl-2-nitro-phenyl)-diazene 

Downstream Products

• 114462-05-4 4-(5'-methyl-2'H-benzotriazol-2'-yl)phenol 
• 52823-55-9 5-(trans-2-dibenzofuran-3-yl-vinyl)-2-(4-methoxy-phenyl)-2H-benzo[1,2,3]triazole 

Relevant academic research and scientific papers

Preparation of Some 2-(Methoxyphenyl)-2H-benzotriazoles and the Corresponding Hydroxyphenyl Compounds

The reaction of several substituted o-nitronitrosobenzenes with o- and p-anisidine, and 2,4-dimethoxyaniline in acetic acid gives in good yield the corresponding o-nitroazobenzenes which are readily reduced with thiourea dioxide (formamidinesulfinic acid) to the corresponding 2-(methoxyphenyl)-2H-benzotriazoles, demethylation of which furnished the corresponding 2-(hydroxyphenyl)-2H-benzotriazoles.Demethylation of the dimethoxy derivatives was best accomplished with boron tribromide in methylene chloride, the methoxy group located ortho to the benzotriazole ring beingdemethylated more readily than is the para-methoxy group.The reaction of 0-nitroazobenzenes containing a methoxy group with hydrobromic acid in acetic acid results in cleavage of the azo bond and also partial bromination to give o-nitroaniline and some of its brominated derivatives.