Quality Control of 1-(4-Nitrophenyl)ethanone. I found the field of Chemistry very interesting. Saw the article Stereoselective Palladium-Catalyzed C-F Bond Alkynylation of Tetrasubstituted gem-Difluoroalkenes published in 2020.0, Reprint Addresses Tsui, GC (corresponding author), Chinese Univ Hong Kong, Dept Chem, Shatin, Hong Kong, Peoples R China.. The CAS is 100-19-6. Through research, I have a further understanding and discovery of 1-(4-Nitrophenyl)ethanone.
A stereoselective Pd(PPh3)(4)-catalyzed C-F bond alkynylation of tetrasubstituted gem-difluoroalkenes with terminal alkynes has been developed. This method gives access to a great variety of conjugated monofluoroenynes bearing a tetrasubstituted alkene moiety with well-defined stereochemistry. Chelation-assisted oxidative addition of Pd to the C-F bond is proposed to account for the high level of stereocontrol. An X-ray crystal structure of a key monofluorovinyl Pd-II intermediate has been obtained for the first time as evidence for the proposed mechanism.
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Reference:
Benzodioxan,
,1,4-Benzodioxane | C8H8O2 – PubChem