SEARCH Articles Figures Tables 2- phenyl protection 2-Phenyl-2- anthrylmethyl esters 9-Anthrylmethyl esters 9-anthrylmethyl Carboxyl groups, protection Carboxyl protecting groups Carboxylation Groups, esters Ester groups Ester protecting groups Esters to protect carboxyl groups Esters, protection Phenyl esters Phenyl esters, to protect carboxyl groups Phenyl group Protective groups esters