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2. Phenylacetylene - Wikipedia

   en.wikipedia.org/wiki/Phenylacetylene

   Phenylacetylene is a prototypical terminal acetylene, undergoing many reactions expected of that functional group. It undergoes semi hydrogenation over Lindlar catalyst to give styrene . In the presence of base and copper(II) salts, it undergoes oxidative coupling to give diphenylbutadiyne . [ 6 ]

3. Trimethylsilylacetylene - Wikipedia

   en.wikipedia.org/wiki/Trimethylsilylacetylene

   Trimethylsilylacetylene is commercially available. It may also be prepared in a manner similar to other silyl compounds: deprotonation of acetylene with a Grignard reagent, followed by reaction with trimethylsilyl chloride. [3] Trimethylsilylacetylene is a precursor to 1,4-bis(trimethylsilyl)buta-1,3-diyne, a protected form of 1,3-butadiyne. [4]

4. Diphenylacetylene - Wikipedia

   en.wikipedia.org/wiki/Diphenylacetylene

   Yet another method involves the coupling of iodobenzene and the copper salt of phenylacetylene in the Castro-Stephens coupling. The related Sonogashira coupling involves the coupling of iodobenzene and phenylacetylene. Diphenylacetylene is a planar molecule. The central C≡C distance is 119.8 picometers. [1]

5. Sandmeyer reaction - Wikipedia

   en.wikipedia.org/wiki/Sandmeyer_reaction

   The Sandmeyer reaction is an example of a radical-nucleophilic aromatic substitution (S RN Ar). The radical mechanism of the Sandmeyer reaction is supported by the detection of biaryl byproducts. [8]

6. Glaser coupling - Wikipedia

   en.wikipedia.org/wiki/Glaser_coupling

   The Hay coupling is variant of the Glaser coupling. It relies on the TMEDA complex of copper(I) chloride to activate the terminal alkyne. Oxygen (air) is used in the Hay variant to oxidize catalytic amounts of Cu(I) to Cu(II) throughout the reaction, as opposed to a stoichiometric amount of Cu(II) used in the Eglington variant. [7]

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8. Alkynylation - Wikipedia

   en.wikipedia.org/wiki/Alkynylation

   These reactions invariably involve metal-acetylide intermediates. This reaction was discovered by chemist John Ulric Nef in 1899 while experimenting with reactions of elemental sodium, phenylacetylene, and acetophenone. [3] [4] For this reason, the reaction is sometimes referred to as Nef synthesis.

9. 49ers suspend De'Vondre Campbell for refusing to enter game ...

   www.aol.com/report-49ers-suspend-devondre...

   The San Francisco 49ers on Monday suspended linebacker De'Vondre Campbell for the final three games of the regular season for refusing to play Thursday night against the Los Angeles Rams.. Niners ...