A highly enantioselective catalytic addition of alkynyl zinc reagents to simple ketones was accomplished by the Chan group (Figure 15). 22 They initially examined the system using titanium tetraisopropoxide and alkynyl zinc reagents, which are known to be effective catalyst systems for the addition of alkynyl groups to aldehydes to the ...

Aug 1, 2011 · Introduction of an alkynyl group in biomolecules provides a useful chemical handle by which further manipulation is possible e.g. via the versatile click chemistry, for the synthesis of labeled peptides and conjugates. Recently, an AuCl-SMe 2 catalyzed site selective alkynylation of tryptophan peptides 22 was reported under ambient, additive-free …

Dec 1, 2022 · The alkynyl ligand-mediated growth of Au nanowires arrays was carried out following the previously reported thiolated ligand-mediated growth with slight modifications. Typically, a piece of Si wafer was cleaned and then modified with APTES, followed by the decoration with 3–5 nm Au nanoparticle seeds.

Apr 5, 2025 · In this study, we developed a chiral Au (I) system based on BINAP and alkynyl ligands. The modification of the length or number of alkyl chains at the terminal positions of the alkynyl ligands significantly impacted the self-assembly behavior of the complexes.

Nov 1, 2024 · Ligand plays a critical role in determining the physicochemical properties and functionalities of metal nanoclusters, as the ligand molecules interact…

Apr 1, 2019 · Described in this review is the chemistry of 3d metal alkynyls based on tetraaza macrocyclic ligands. Both the abundance of 3d metals and easy access …

Jul 21, 2016 · We chemically synthesized a novel series of alkynyl-fucose analogs as probe candidates and found that 7-alkynyl-fucose gave the highest labeling efficiency and low cytotoxicity. Among the fucose analogs, 7-alkynyl-fucose was the best substrate against all five fucosyltransferases examined.

Jun 1, 2018 · Alkynyl functionalized carbon materials were synthesized successfully for the first time through the mechanochemical reaction of CaC 2 with six PHHCs at ambient temperature. The ACMs are micro-mesoporous materials with high alkynyl group content and high SSA.

Nov 1, 2024 · Alkynyl ligand can enrich the metal-ligand interfacial structure, modulate the physical/chemical property, tune the electronic structure, promote the catalytic performance, and introduce new functionalities of the metal nanoclusters, hence bringing great prosperity in metal nanocluster field.

Feb 15, 2022 · This review provided a clear summary of alkynyl ligands and synthetic methods of alkynyl-protected coinage metal clusters, and systematically summarized the functional properties of alkynyl-protected coinage metal clusters including luminescence behaviors, especially for the TADF mechanism and NIR emission, chirality and catalysis.