Synthesis of enantiopure 1,2,3-triazolylidene-type mesoionic carbene (MIC) conjugate acids featuring a rigid bicyclic scaffold

Organic Chemistry Frontiers, Journal Year: 2024, Volume and Issue: 11(8), P. 2178 - 2181

Published: Jan. 1, 2024

Chiral NHCs have found numerous applications as ligands for transition metals and in their own right asymmetric catalysis. We report a synthetic route from l -malic acid to enantiopure 1,2,3-triazoliums with the chiral center fused ring.

Language: Английский

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Synthesis and Electrochemical Study of Gold(I) Carbene Complexes

Molecules, Journal Year: 2024, Volume and Issue: 29(17), P. 4081 - 4081

Published: Aug. 28, 2024

In this work, we have prepared and characterized some gold compounds wearing a N-heterocyclic carbene (NHC) ligand as well alkynyl derivatives with different substituents. The study of their electrochemical behavior reveals that these complexes show an irreversible wave at potentials ranging between −2.79 −2.91 V, referenced to the ferrocenium/ferrocene pair. DFT calculations indicate reduction occurs mainly on aryl−C≡C fragment. cyclic voltammetry experiments under CO2 atmosphere increase in faradaic current compared argon atmosphere, indicating possible catalytic activity towards carbon dioxide reaction (CO2RR).

Language: Английский

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Simple synthesis of [Au(NHC)X] complexes utilizing aqueous ammonia: revisiting the weak base route mechanism

Dalton Transactions, Journal Year: 2024, Volume and Issue: unknown

Published: Jan. 1, 2024

The role of aqueous ammonia in the preparation [Au(NHC)Cl] complexes is examined. This weak base capable promoting C–H and S–H activations leading to Au-alkynyls Au-thiolates under mild conditions using technical grade solvents air.

Language: Английский

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