Substituent Effects in Chain‐Breaking Aryltellurophenol Antioxidants

2‐Aryltellurophenols substituted in the aryltelluro or phenolic parts of the molecule were prepared by lithiation of the corresponding tetrahydropyran‐protected 2‐bromophenol, followed by reaction with a suitable diaryl ditelluride then deprotection. In a two‐phase system containing N ‐acetylcysteine as a co‐antioxidant in the aqueous phase, all of the compounds quenched lipid peroxyl radicals more efficiently than α‐tocopherol, with three to...