Zeng, Xian-Liang published the artcileNucleophilic monofluoroalkylation with fluorinated phosphonium salt toward carbonyl and imine compounds, SDS of cas: 401-55-8, the publication is Journal of Fluorine Chemistry (2017), 17-23, database is CAplus.
A fluorinated substituent on the pos. phosphorus in phosphonium salt [Ph3P+CF(Me)CO2Et Br–] was found to be able to act as a nucleophile to realize monofluoroalkylation of aldehydes, ketones and imines.
Journal of Fluorine Chemistry published new progress about 401-55-8. 401-55-8 belongs to bromides-buliding-blocks, auxiliary class Fluoride,Bromide,Aliphatic hydrocarbon chain,Ester, name is Ethylbromofluoroacetate, and the molecular formula is C15H21BO3, SDS of cas: 401-55-8.
Referemce:
https://en.wikipedia.org/wiki/Bromide,
bromide – Wiktionary