4-(Benzoxazol-2-yl)benzyl bromide → 2-{2-Hydroxy-4-[4-(2-benzoxazolyl)benzyloxy]phenyl}benzotriazole

Beteiligte Stoffe

Reaktionsschritte

2-(p-Tolyl)benzoxazole was reacted with N-bromosuccinimide in the presence of benzoyl peroxide by the standard procedure to produce the known compound, 2-(4-bromomethylphenyl)benzoxazole (A). 2-(2,4-Dihydroxyphenyl)benzotriazole (B) (0.1 mole) and 2-(4-bromomethylphenyl)benzoxazole (A) (0.1 mole) was stirred in a mixture of 2-butanone (300 ml.) and potassium carbonate (100 g.). After refluxing 16 hr., the mixture was poured onto 1000 g. ice/water. Filtration, washing with water and recrystallization from methyl cellosolve/isopropyl alcohol gave the tan, crystalline product I.

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