《Copper-catalyzed boroacylation of allenes to access tetrasubstituted vinylboronates》 was published in Organic & Biomolecular Chemistry in 2020. These research results belong to Shen, Bing-Xue; Min, Xiang-Ting; Hu, Yan-Cheng; Qian, Lei-Lei; Yang, Sa-Na; Wan, Boshun; Chen, Qing-An. Name: 1,3-Dimesityl-1H-imidazol-3-ium chloride The article mentions the following:
A distinct copper-catalyzed boroacylation of allenes with acyl chlorides and bis(pinacolato)diboron is developed. For aromatic acyl chlorides, 1,2-boroacylation of allenes readily takes place, leading to the formation of tetrasubstituted vinylboronates with exclusive (E)-stereoselectivity. In comparison, the employment of alkyl acyl chlorides as electrophiles alters the selectivity to 2,3-boroacylated products. Addnl., the product can easily undergo Suzuki-Miyaura cross-coupling to afford tetrasubstituted alkene with complete retention of the configuration. The experimental process involved the reaction of 1,3-Dimesityl-1H-imidazol-3-ium chloride(cas: 141556-45-8Name: 1,3-Dimesityl-1H-imidazol-3-ium chloride)
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.Name: 1,3-Dimesityl-1H-imidazol-3-ium chloride
Referemce:
Imidazole – Wikipedia,
Imidazole | C3H4N2 – PubChem