2-((2-Nitrophenyl)azo)-4-(1,1,3,3-tetramethylbutyl)phenol → Octrizole

Participants

Reaction Steps

The same procedure as in Example 9 was repeated, except that 2-nitro-2'-hydroxy-3',5'-di-t-amylazobenzene 25.5 g was replaced by 2-nitro-2'-hydroxy-5'-t-octylazobenzene 23.7 g. Thus, after recovering the catalyst, the remaining material was washed with methanol to produce 18.0 g of 2-(2-hydroxy-5-t-octylphenyl)benzotriazole having a melting point of 103° to 105° C. at the yield of 83.7%.

Provenance & Evidence