4-Nitrobenzeneboronic acid is an arylboronic acid building block that has been used in the synthesis of phenols.1,2
1.Xu, J., Wang, X., Shao, C., et al.Highly efficient synthesis of phenols by copper-catalyzed oxidative hydroxylation of arylboronic acids at room temperature in waterOrg. Lett.12(9)1964-1967(2010) 2.Sawant, S.D., Hudwekar, A.D., Kumar, K.A.A., et al.Ligand- and base-free synthesis of phenols by rapid oxidation of arylboronic acids using iron(III) oxideTetrahedron Lett.55(4)811-814(2014)