Kalyavin, V. A. published the artcileOn the rearrangement of radicals formed in the decomposition of β-bromocarboxylic acids, SDS of cas: 56970-78-6, the publication is Vestnik Moskovskogo Universiteta, Seriya 2: Khimiya (1999), 40(6), 384-389, database is CAplus.
Hydrobrominating RCH:CR1CO2H (R = Me, Ph, R1 = H; R = H, R1 = Me) with HBr in AcOOH gave 57-83% yields of the corresponding RCHBrCHR1CO2H, which reacted with SOCl2 to give the acid chlorides and then with H2O2 in pyridine to give the corresponding (RCHBrCHR1CO)2O2 (I) in ≤75% yield. I underwent thermolysis at 80° or UV photolysis in C6H6 or PhMe to give complex mixtures via rearrangement of the initially formed primary radicals to secondary ones via a 1,2-shift of the Br atom.
Vestnik Moskovskogo Universiteta, Seriya 2: Khimiya published new progress about 56970-78-6. 56970-78-6 belongs to bromides-buliding-blocks, auxiliary class Bromide,Carboxylic acid,Aliphatic hydrocarbon chain,Inhibitor, name is 3-Bromo-2-methylpropanoic acid, and the molecular formula is C4H7BrO2, SDS of cas: 56970-78-6.
Referemce:
https://en.wikipedia.org/wiki/Bromide,
bromide – Wiktionary