Uno, Misae published the artcileSynthesis of 4,4-Difluoroalkenes by Coupling of α-Substituted α,α-Difluoromethyl Halides with Allyl Sulfones under Photoredox Catalyzed Conditions, Computed Properties of 401-55-8, the publication is Journal of Organic Chemistry (2019), 84(14), 9330-9338, database is CAplus and MEDLINE.
Photoredox-catalyzed allylation of α-gem-difluorinated organohalides with allyl sulfones proceeded smoothly under visible light irradiation to give 4,4-difluoroalkenes in good yields. In the presence of catalytic Ru(bpy)3Cl2, Hantzsch ester, and diisopropylethylamine, the reaction was complete within 2 h. Using the same methodol., three-component cascade reactions to give 6,6-difluoroalkenes were carried out successfully.
Journal of Organic 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 C19H14Cl2, Computed Properties of 401-55-8.
Referemce:
https://en.wikipedia.org/wiki/Bromide,
bromide – Wiktionary