J. Zakrzewski et J. Szymanowski, 2-Hydroxybenzophenone UV-absorbers containing 2,2,6,6-tetramethylpiperidine (HALS) group - benzoylation of corresponding phenol derivatives, POLYM DEGR, 67(2), 2000, pp. 279-283
Phenol derivatives containing 2,2,6,6-tetramethylpiperidine group were succ
essfully benzoylated with both benzoyl chloride in the presence of aluminiu
m chloride and benzotrichloride in aqueous sodium hydroxide solution. The 2
-hydroxybenzophenone UV-absorbers bearing light stabilizing fragment - 2,2,
6,6-tetramethylpiperidine nucleus - were synthesized in this way. (C) 2000
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