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  2. Vinyl group - Wikipedia

    en.wikipedia.org/wiki/Vinyl_group

    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 name is also used for any compound containing that group, namely R ...

  3. Allyl group - Wikipedia

    en.wikipedia.org/wiki/Allyl_group

    In organic chemistry, an allyl group is a substituent with the structural formula −CH 2 −HC=CH 2. It consists of a methylene bridge (−CH 2 −) attached to a vinyl group (−CH=CH 2). [1] [2] The name is derived from the scientific name for garlic, Allium sativum. In 1844, Theodor Wertheim isolated an allyl derivative from garlic oil and ...

  4. Electrophilic substitution of unsaturated silanes - Wikipedia

    en.wikipedia.org/wiki/Electrophilic_substitution...

    Electrophilic additions to allyl- and vinylsilanes take advantage of this, and site selectivity generally reflects this property—electrophiles become bound to the carbon γ to the silyl group. The electron-donating strength of the carbon-silicon bond is similar to that of an acetamide substituent and equal to roughly two alkyl groups. [6]

  5. Functional group - Wikipedia

    en.wikipedia.org/wiki/Functional_group

    There are several functional groups that contain an alkene such as vinyl group, allyl group, or acrylic group. Hydrocarbons may form charged structures: positively charged carbocations or negative carbanions. Carbocations are often named -um. Examples are tropylium and triphenylmethyl cations and the cyclopentadienyl anion.

  6. Protecting group - Wikipedia

    en.wikipedia.org/wiki/Protecting_group

    Allyl compounds will isomerize to a vinyl group in the presence of noble metals. The residual enol ether (from a protected alcohol) or enamine (resp. amine) hydrolyzes in light acid. Photolabile protecting groups bear a chromophore, which is activated through radiation with an appropriate wavelength and so can be removed. [6]

  7. Vinyl halide - Wikipedia

    en.wikipedia.org/wiki/Vinyl_halide

    General structure of a vinyl halide, where X is a halogen and R is a variable group. In organic chemistry, a vinyl halide is a compound with the formula CH 2 =CHX (X = halide). The term vinyl is often used to describe any alkenyl group. For this reason, alkenyl halides with the formula RCH=CHX are sometimes called vinyl halides.

  8. Fed Chair Powell says he won't resign if Trump asks him to ...

    www.aol.com/fed-chair-powell-says-wont-202841242...

    Federal Reserve Chair Jerome Powell said he won't step down if President-elect Donald Trump, who has previously criticized Powell's performance, asks him to resign.

  9. Petasis reaction - Wikipedia

    en.wikipedia.org/wiki/Petasis_reaction

    [1] [2] [3] In the Petasis reaction, the vinyl group of the organoboronic acid serves as the nucleophile. In comparison to other methods of generating allyl amines, the Petasis reaction tolerates a multifunctional scaffold, with a variety of amines and organoboronic acids as potential starting materials.

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