Add time:09/02/2019         Source:sciencedirect.com

Phenol derivatives containing 2,2,6,6-tetramethylpiperidine group were successfully benzoylated with both benzoyl chloride in the presence of aluminium chloride and benzotrichloride in aqueous sodium hydroxide solution. The 2-Hydroxybenzophenone (cas 117-99-7) UV-absorbers bearing light stabilizing fragment — 2,2,6,6-tetramethylpiperidine nucleus — were synthesized in this way.

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