Bergmann, A. G. published the artcileReactions of combination with conjugated systems of double linkings. II. Combination of hydrogen bromide with di-isopropenyl [β,γ-dimethyl-Δαγ-butadiene], Recommanded Product: 2,3-Dibromo-2,3-dimethylbutane, the publication is Zhurnal Russkago Fiziko-Khimicheskago Obshchestva (1920), 37-40, database is CAplus.
The combination of HBr with β,γ-dimethyl-Δαγ-butadiene in glacial AcOH takes place in the 2 stages: (1) CH2:CMeCMe:CH2 + HBr = CMe2BrCMe:CH2, and (2) the latter + HBr = CMe2BrCMe2Br (30%) + CMe2BrCHMeCH2Br (70%). γ-Bromo-β,γ-dimethyl-Δα-butene, C6H11Br, b100 84-6°, d20 1.2201, yields dimethylisopropenylcarbinol when hydrolyzed by means of aqueous KOH. β,γ-Dibromo-β,γ-dimethylbutane was described by Thiele (Ber. 27, 454). α,γ-Dibromo-β,γ-dimethylbutane is a liquid, b16.5 88-9°, d20 1.6065. The product of the union of 1 mol. of HBr with isoprene, viz., γ-bromo-γ-methyl-Δα-butene, combines with a 2nd mol. of HBr, apparently giving only βδ-dibromo-β-methylbutane.
Zhurnal Russkago Fiziko-Khimicheskago Obshchestva published new progress about 594-81-0. 594-81-0 belongs to bromides-buliding-blocks, auxiliary class Bromide,Aliphatic hydrocarbon chain, name is 2,3-Dibromo-2,3-dimethylbutane, and the molecular formula is C6H12Br2, Recommanded Product: 2,3-Dibromo-2,3-dimethylbutane.
Referemce:
https://en.wikipedia.org/wiki/Bromide,
bromide – Wiktionary