alkyne

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alkyne

 [al´kīn]
an aliphatic hydrocarbon containing a triple bond.
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Each of these azide compounds was subject to reaction with fifty different alkyne moieties by using the CuAAC click chemistry approach.
[18] In this study, different functional groups such as alcohols, phenols, alkanes, aldehydes, primary amines, and alkynes were identified using FTIR.
It was observed that the strong absorption bands around 2115 [cm.sup.-1] and 3265 [cm.sup.-1] disappeared, which corresponds to the stretching vibration of azide and alkyne C-H, respectively.
Fox, "Rh-catalyzed intermolecular reactions of alkynes with [alpha]-diazoesters that possess [beta]-hydrogens: ligand-based control over divergent pathways," Journal of the American Chemical Society, vol.
In 1978, we discovered Zr-catalyzed methylalumination of alkynes (ZMA) (19)-(21) and tentatively proposed its mechanism as shown in Scheme 1.
Figs have a high level of alkynes; therefore they help to regulate the pH of the body.
From the generals of structure and bonding and functional groups, stereochemistry,and reactivity to the specifics of alkynes, alkenes, benzenes, carbonyl compounds et al., it's all here.
FTIR spectrum of carbon before phenol adsorption shows peaks at 2923 [cm.sup.-1] due to O-H stretching in carboxylic group, the peak at 3620 [cm.sup.-1] shows OH stretching of phenol group [35], the peak observed at 1203 [cm.sup.-1] is C-O group attributed to alcohol, the band at 2376 [cm.sup.-1] indicates the presence of C[equivalent to]C of alkynes [36], and at 1558 [cm.sup.-1] is ascribed to C=C aromatic ring stretching vibration [16].
It involves addition of the produced OH to the aromatic, heterocyclic rings, and unsaturated bonds of alkenes or alkynes [18], thereby enhancing the degradability of aliphatic compounds.
Atractylodis Rhizoma is rich of essential oil including sesquiterpenes and polyethylene alkynes, which are the main active components in this medicine [4].