2,4 Difluorobromobenzene, 98% undergoes lithiation exclusively at the position having two adjacent halogen substituents, to yield 6-bromo-2,3-difluorobenzoic acid.
D 1811 (OTTO) 2,4 Difluorobromobenzene, 98% Cas 348-57-2 - used in preparation of (2S)-1-(2,4-difluorophenyl)-2-(1,1-dimethyl-1-sila-ethoxy)-propan-1-one.