A Valuable Synthetic Intermediate of 5-Substituted Resorcinols

5-Bromoresorcinol (1) is a valuable intermediate for the preparation of a number of 5-substituted resorcinols, such as 3, 4 and 5. The compound 3 is the synthetic intermediate of (-)-berkelic acid.¹⁾
Compounds 4 are the building blocks of biphenyl compounds²⁾ and compounds 5 are 3,5-disubstituted arylboronic pinacol esters for Suzuki-Miyaura coupling.³⁾