Arbuzov, B. A. published the artcileReaction of some chloro and bromo derivatives with sodium diethyl phosphite, Formula: C6H12Br2, the publication is Sbornik Statei po Obshchei Khimii (1953), 1144-8, database is CAplus.
(EtO)2PONa from 0.9 g. Na and 5.35 g. (EtO)2POH in Et2O was treated with 10 g. Ph2CHBr in Et2O-C6H6; after 2 hrs. on the steam bath the filtered solution gave on evaporation 61.33% (CHPh2)2 and 5.3 g. yellow oil. No reaction took place when (EtO)2PONa, prepared as above, was treated with Ph2CHCl; the reaction also failed in hot (iso-Am)2O. The reaction did proceed in refluxing MePh (2 hrs.), yielding (EtO)2POH, Ph2CHOH, (Ph2CH)2O, and a low yield of Ph2CHP(O)(OEt)2, b4 184-8°, d020 1.12775, nD20 1.5450, m. 38-40°; hydrolyzed with 10% HCl 8 hrs. at 170-5° in a sealed tube, it gave the free acid, m. 223-5° (from H2O). Addition of 8 g. (EtO)3P in Et2O to 12 g. Ph2CHBr in Et2O, followed by refluxing 1 hr. gave 43.6% yield of the same product, b2 180-1°, d020 1.1287, nD20 1.5445, which slowly solidified and m. 39-40°; hydrolysis with 10% HCl at 150-80° gave the free acid, m. 227-8°. Addition of 13.8 g. PhCH2Cl to (EtO)2ONa from 15.6 g. ester in Et2O, followed by 0.5 hr. reflux gave 49.35% PhCH2P(O)(OEt)2, b11 153-4°, d00 1.1200, nD20 1.4965; hydrolysis gave the free acid, m. 169-70° (from EtOH). Similar reaction with PhCH2Br gave 44% yield of the same ester, b12 153-5°, d00 1.1189, nD20 1.4892, while PhCH2I gave 21.1% yield of the same ester. To (EtO)2PONa (from 15.85 g. ester) in Et2O was added 14 g. (Me2CBr)2 resulting in a rapid reaction (7 min.); after filtration the mixture yielded 50% Me2C:CMe2.
Sbornik Statei po Obshchei Khimii 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, Formula: C6H12Br2.
Referemce:
https://en.wikipedia.org/wiki/Bromide,
bromide – Wiktionary