Zhang, Zhi-Mao; Xu, Yu-Ting; Shao, Li-Xiong published an article in 2021. The article was titled 《Synthesis of N-heterocyclic carbene-Pd(II)-5-phenyloxazole complexes and initial studies of their catalytic activity toward the Buchwald-Hartwig amination of aryl chlorides》, and you may find the article in Journal of Organometallic Chemistry.Category: imidazoles-derivatives The information in the text is summarized as follows:
Three new N-heterocyclic carbene (NHC)-Pd(II) complexes using 5-phenyloxazole as the ancillary ligand was obtained in moderate to good yields by a one-pot reaction of the corresponding imidazolium salts, palladium chloride and 5-phenyloxazole under mild conditions. Initial studies showed that one of the complexes was an efficient catalyst for the Buchwald-Hartwig amination of aryl chlorides with various secondary and primary amines under the varied catalyst loading of 0.01-0.05 mol%, thus it will enriched the chem. of NHCs and gave an alternative catalyst for the coupling of challenging while cost-low aryl chlorides. The experimental part of the paper was very detailed, including the reaction process of 1,3-Dimesityl-1H-imidazol-3-ium chloride(cas: 141556-45-8Category: imidazoles-derivatives)
1,3-Dimesityl-1H-imidazol-3-ium chloride(cas: 141556-45-8) is a ligand for arylation of aldehydes and for carbene catalyzed intermolecular arylation of C-H bonds. It is used as a phosphine-free ligand in various metal-catalyzed coupling reactions, often with advantageous results in difficult cases.Category: imidazoles-derivatives
Referemce:
Imidazole – Wikipedia,
Imidazole | C3H4N2 – PubChem