Toluene → 2,4-Di-tert-butyl-6-(5-chloro-2H-benzotriazol-2-yl)phenol

Participants

Reaction Steps

39.0 g (0.1 mol) of 2-nitro-4-chloro-2'-hydroxy-3',5'-di-t-butylazobenzene, 0.125 g of 5% palladium carbon, 100 ml of toluene, 60 ml of 2-butanol, 120 ml of water and 7 g of tributylamine were charged into a 500-ml stainless autoclave with an agitator. Reaction was effected in the same manner as that employed in Example 1. After the reaction had been completed, after treatment was performed in the same way as that employed in Example 1 to obtain 28.1 g of 2-(2'-hydroxy-3',5'-di-t-butylphenyl)-5-chlorbenzotriazole(yield, 78.6%; melting point, 152° to 153° C.).

Provenance & Evidence