Sentences with word «alkyne»

Coupling SRS with alkyne tags has been reported earlier by the same group as a general strategy for imaging small biomolecules.

Selective hydrogenation is the key to producing valuable chemicals, for example, turning triple - bonded hydrocarbons called alkynes selectively into double - bonded alkenes — starting materials for the synthesis of plastics, fuels and other commercial products.

Specifically, glucose is labeled with a small alkyne tag (i.e., carbon - carbon triple bond) to generate a strong and characteristic Raman scattering signal in the otherwise silent region, which can be picked up by SRS microscope with high sensitivity and specificity to produce a quantitative concentration map in three dimensions.

The current scope is, however, limited to internal alkynes (1,2 - disubstituted acetylenes), and the present reaction entails internal side groups in the conjugated tetraenes.

Genetic encoding and labeling of aliphatic azides and alkynes in recombinant proteins via a pyrrolysyl - tRNA synthetase / tRNA (CUA) pair and click chemistry.

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Hirner et al. have devised a catalyst that formally cleaves B - O bonds through their intramolecular addition across an alkyne.

Stimulated Raman scattering (SRS) imaging of glucose uptake activity by targeting the alkyne tag of a novel glucose analogue in live mouse brain hippocampal neurons and tumor tissues (in red).

«An efficient approach of conjugated tetraenes from butadiene and alkynes: A new one - pot approach of conjugated tetraenes from inexpensive reagents could have wide - ranging applications in material and pharmaceutical chemistry.»

The team points out that unclicking triazoles in this way opens up new ways of using their constituent azides and alkynes and might allow for the use of triazoles as mechanically labile protecting groups in synthetic reactions.

These molecules are readily made using click chemistry by coupling an azide and alkyne, but the team reasoned the same triazole might be a useful protecting group in various chemical processes if there were a way to reverse the process.

All chemists are well - acquainted with alkanes, alkenes and alkynes, which have single, double and triple carbon - carbon bonds respectively.