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In organic chemistry, vinylation is the process of attaching a vinyl group (CH 2 =CH−) to a substrate. Many organic compounds contain vinyl groups, so the process has attracted significant interest, especially since the reaction scope includes substituted vinyl groups. The reactions can be classified according to the source of the vinyl group.
A vinyl sulfone is an organic compound with the formula O 2 S(CH=CH 2) 2. The molecule consisting of two vinyl groups bonded to a sulfone. It is the parent of several vinyl sulfones of the type O 2 S(CH=CH 2)R. [1] Many vinyl sulfones are known.
Vinyl, acetate, and shellac discs being exposed to soil and fungus spores. Library of Congress Study, 1959. The conservation and restoration of vinyl discs refers to the preventive measures taken to defend against damage and slow degradation, and to maintain fidelity of singles, 12" singles, EP’s, and LP’s in 45 or 33⅓ rpm 10" disc ...
Chemical structure of the vinyl functional group. In organic chemistry , a vinyl group (abbr. Vi ; [ 1 ] IUPAC name : ethenyl group [ 2 ] ) is a functional group with the formula −CH=CH 2 . It is the ethylene (IUPAC name: ethene) molecule ( H 2 C=CH 2 ) with one fewer hydrogen atom.
The vinyl sulfone parabase ester can be used as a diazo component in the preparation of azo dyes. [1] A further possibility is the condensation reaction of parabase ester with a chlorine or fluorotriazine residue, which in turn can be linked to any chromophore via a further amino group. Vinyl sulfone parabase ester
Vinyllithium is used to install vinyl groups on metal-based reagents, i.e., vinylations. It is a precursor to vinylsilanes, vinylcuprates, and vinylstannanes. [3] It adds to ketones compounds to give allylic alcohols. Vinylmagnesium bromide is often used in place of vinyllithium. [4]
Styrene is an organic compound with the chemical formula C 6 H 5 CH=CH 2. Its structure consists of a vinyl group as substituent on benzene. Styrene is a colorless, oily liquid, although aged samples can appear yellowish. The compound evaporates easily and has a sweet smell, although high concentrations have a less pleasant odor.
In 1959, Grob and Cseh detected vinyl cations during solvolysis reactions of alpha-vinyl halides. [6] Indeed, for this contribution, Grob has been called “the father of the vinyl cation”. [7] The 1960s saw a flurry of vinyl cation-related research, with kinetics data driving the argument for the existence of the species.