Wu, Shaoxiang published the artcileA highly diastereoselective and enantioselective phase-transfer catalyzed epoxidation of β-trifluoromethyl-β,β-disubstituted enones with H2O2, Related Products of bromides-buliding-blocks, the publication is Iranian Journal of Chemistry & Chemical Engineering (2015), 34(4), 13-38, database is CAplus.
An efficient epoxidation of β-CF3-β,β-disubstituted unsaturated ketones was developed with environmental benign hydrogen peroxide as the oxidant and F5-substituted chiral quaternary ammonium salt derived from cinchona-alkaloid as the catalyst. Using 3 mol% of the catalyst, both enantiomers of (R,R) and (S,S) β-trifluoromethyl-α,β-epoxy ketones were obtained in excellent diastereoselectivities (up to 100:1 d.r.) and enantioselectivities (up to 99.7% ee). The effects of catalyst structure, catalyst loading, substrate structure, the nature of oxidant, and reaction conditions on the catalyst capacities were discussed in full length. The reaction mechanism was proposed to explain the origin of chiral induction. By subsequent reduction with zinc the epoxides were exhibited to be converted into trifluoromethylated quaternary alcs. without any loss in enantioselectivities. All new compounds were fully characterized by IR, NMR, elemental anal. and or high resolution mass spectrum.
Iranian Journal of Chemistry & Chemical Engineering published new progress about 76283-09-5. 76283-09-5 belongs to bromides-buliding-blocks, auxiliary class Fluoride,Bromide,Benzyl bromide,Benzene, name is 4-Bromo-1-(bromomethyl)-2-fluorobenzene, and the molecular formula is C10H10CoF6P, Related Products of bromides-buliding-blocks.
Referemce:
https://en.wikipedia.org/wiki/Bromide,
bromide – Wiktionary