Auwers, K. published the artcileDicarboxylic acids, C8H14O4, Application In Synthesis of 56970-78-6, the publication is Berichte der Deutschen Chemischen Gesellschaft, 3005, database is CAplus.
Of the two acids obtained by the action of silver on ethyl α-bromisobutyrate (Abstract, 1889, 1145), the volatile acid is tetramethylsuccinic acid, whilst the non-volatile acid is symmetrical dimethyladipic acid, C2H4(CHMe.COOH)2 (compare Zelinsky, preceding abstract). According to Hell (Ber., 10, 2229), a portion of the α-bromisobutyric acid decomposes into hydrogen bromide and methylacrylic acid, which unite, according to Fittig and Engelhorn (Annalen, 200, 65), to form β-bromisobutyric acid. The normal product of the action of silver on the latter would be the above dimethyladipic acid. In order to test the correctness of this view, the authors are studying β-bromisobutyric acid and especially its behaviour towards silver.
Berichte der Deutschen Chemischen Gesellschaft 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, Application In Synthesis of 56970-78-6.
Referemce:
https://en.wikipedia.org/wiki/Bromide,
bromide – Wiktionary