2??Chloro??6??substituted benzoic acids of the type 2a–h were prepared by the tandem metallation sequence from 2??chlorobenzoic acid 1 with the 1:1 complex sec??butyllithium/TMEDA in THF at −78°C followed by quenching with electrophiles. ... 2??Chloro??6??substituted benzoic acids of the type 2a–h were prepared by the tandem metallation sequence from 2??chlorobenzoic acid 1 with the 1:1 complex sec??butyllithium/TMEDA in THF at −78°C followed by quenching ...