The reaction of PhPAuN with 9-Ph-9-borafluorene resulted in complexation of the azide to boron while a gold acetylide reacted with 9-Ph-9-borafluorene to insert the acetylide carbon to access a six-membered boracycle with an exocyclic double bond.
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http://dx.doi.org/10.1039/d2dt03672j | DOI Listing |
Chemistry
July 2024
Institute of Inorganic Chemistry, Karlsruhe Institute of Technology, Kaiserstr.12, 76131, Karlsruhe, Germany.
The synthesis of phosphine acetylide amidinate stabilized copper(I) and gold(I) heterobimetallic complexes was achieved by reacting ligand [{PhPC≡CC(NDipp)}Li(thf)] (Dipp=2,6-N,N'-diisopropylphenyl) with CuCl and Au(tht))Cl, yielding the eight membered ring [{PhPC≡CC(NDipp)}Cu] and the twelve membered ring [{PhPC≡CC(NDipp)}Au]. {PhPC≡CC(NDipp)}Cu] features a Cu unit, which is bridged by two amidinate ligands, served as a metalloligand to synthesize the heterobimetallic Cu/Au complexes [{(AuX)PhPC≡CC(NDipp)}Cu] (X=Cl, CF). In these reactions, the central ring structure is retained.
View Article and Find Full Text PDFAdv Mater
February 2024
Department of Chemistry, The University of Manchester, Oxford Rd., Manchester, M13 9PL, UK.
A series of carbene-gold-acetylide complexes [(BiCAAC)AuCC] C H (n = 1, Au1; n = 2, Au2; n = 3, Au3; BiCAAC = bicyclic(alkyl)(amino)carbene) have been synthesized in high yields. Compounds Au1-Au3 exhibit deep-blue to blue-green phosphorescence with good quantum yields up to 43% in all media. An increase of the (BiCAAC)Au moieties in gold complexes Au1-Au3 increases the extinction coefficients in the UV-vis spectra and stronger oscillator strength coefficients supported by theoretical calculations.
View Article and Find Full Text PDFDalton Trans
January 2023
Baylor University, Department of Chemistry and Biochemistry, One Bear Place #97348, Waco, TX 76798, USA.
The reaction of PhPAuN with 9-Ph-9-borafluorene resulted in complexation of the azide to boron while a gold acetylide reacted with 9-Ph-9-borafluorene to insert the acetylide carbon to access a six-membered boracycle with an exocyclic double bond.
View Article and Find Full Text PDFJ Org Chem
June 2022
Frontier Research Center on Fundamental and Applied Science of Matters, Department of Chemistry, National Tsing Hua University, Hsinchu 30013, Taiwan, ROC.
Gold-catalyzed synthesis of quinoline derivatives via [4 + 2] annulation between terminal arylynes and nitrones is described. Our mechanistic analysis supports the participation of alkynylgold intermediates, instead of a typical gold-carbene species in recently reported gold catalysis. These nucleophilic alkynylgold species react with nitrones via Povarov-type reactions.
View Article and Find Full Text PDFChemistry
February 2022
Aix Marseille Univ, CNRS Centrale Marseille, iSm2, Marseille, France.
Chiral gold(I) acetylide trinuclear complexes 1-3 based on the cyclotribenzylene platform and terminal PR ligands (R=Ph, Et, and Cy, respectively), were characterized and their light emission studied. They exhibited long-lived blue phosphorescence in CHCl and a weak fluorescence in the UV. In MeOH/CHCl mixtures of >1:1 volume ratio, 1 and 2 exhibited a new emission band at ca.
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