20249-14-3

Upstream product

• 4860-07-5 2-benzotriazol-2-yl-4-tert-butyl-6-methyl-phenol 
• 73936-83-1 2-Methyl-4-(1-methyl-1-phenyl-ethyl)-6-(2-nitro-phenylazo)-phenol 
• 95-48-7 ortho-cresol 
• 837-09-2 2-methyl-4-(α,α-dimethylbenzyl)phenol 
• 102116-83-6 2-Benzotriazol-2-yl-6-methyl-4-(1-methyl-1-phenyl-ethyl)-phenol 
• 29820-06-2 2-Benzotriazol-2-yl-6-methyl-4-(1,1,3,3-tetramethyl-butyl)-phenol 

Relevant academic research and scientific papers

Preparation of Some 2-(2' H-Benzotriazol-2'-yl)phenol Ultraviolet Absorbers: Application of the Transalkylation Reaction

When 2-(2' H-benzotriazol-2'-yl)phenols containing t-alkyl substituents are warmed in toluene solution with an aluminium chloride/nitromethane catalyst, the t-alkyl groups are transferred to the solvent (toluene).This transalkylation reaction has been used to prepare not readily accessible or previously inaccessible 2-(2' H-benzotriazol-2'-yl)phenols, a class of ultraviolet absorbers widely used in industry.