Khotavivattana, Tanatorn published the artcileSynthesis and Reactivity of 18F-Labeled α,α-Difluoro-α-(aryloxy)acetic Acids, Safety of Ethylbromofluoroacetate, the publication is Organic Letters (2017), 19(3), 568-571, database is CAplus and MEDLINE.
The authors describe the 18F-labeling of α,α-difluoro-α-(aryloxy)acetic acid derivatives and demonstrate that these building blocks are amenable to post-18F-fluorination functionalization. Protodecarboxylation offers a new entry to 18F-difluoromethoxyarenes, and the value of this approach is further demonstrated with coupling processes leading to representative 18F-labeled TRPV1 inhibitors and TRPV1 antagonists.
Organic Letters 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 C4H6BrFO2, Safety of Ethylbromofluoroacetate.
Referemce:
https://en.wikipedia.org/wiki/Bromide,
bromide – Wiktionary