Nickel-Catalyzed Intermolecular Carbobromination of Alkynes was written by Takahashi, Toshifumi;Kurahashi, Takuya;Matsubara, Seijiro. And the article was included in ACS Catalysis in 2020.Name: 2-(4-Bromophenyl)-4,4,5,5-tetramethyl-1,3,2-dioxaborolane This article mentions the following:
The nickel-catalyzed intermol. carbobrominations of alkynes with aryl bromides to form highly substituted and functionalized alkenyl bromides such as I [R1 = n-Pr, n-pentyl, Bu; R2 = n-Pr, n-pentyl, Br; R1R2 = (CH2)10, (CH2)13; Ar = 2-MeC6H4, 4-MeCOC6H4, 1-anthracenyl, etc.]. The reductive elimination of carbon-bromine bond from a Ni(II) species, which was usually a disfavored process, was achieved from a high-valent Ni(III) species in this reaction. This transformation not only expands the scope of transition-metal-complex-promoted bond-forming reactions but also, more particularly, accomplished the formation of labile bonds, which was as challenging to achieve as the cleavage of inert bonds, such as C-O or C-H bonds. In the experiment, the researchers used many compounds, for example, 2-(4-Bromophenyl)-4,4,5,5-tetramethyl-1,3,2-dioxaborolane (cas: 68716-49-4Name: 2-(4-Bromophenyl)-4,4,5,5-tetramethyl-1,3,2-dioxaborolane).
2-(4-Bromophenyl)-4,4,5,5-tetramethyl-1,3,2-dioxaborolane (cas: 68716-49-4) belongs to alcohols. Alcohols are weak acids. The most acidic simple alcohols (methanol and ethanol) are about as acidic as water, and most other alcohols are somewhat less acidic. Secondary alcohols are easily oxidized without breaking carbon-carbon bonds only as far as the ketone stage. No further oxidation is seen except under very stringent conditions.Name: 2-(4-Bromophenyl)-4,4,5,5-tetramethyl-1,3,2-dioxaborolane
Referemce:
Alcohol – Wikipedia,
Alcohols – Chemistry LibreTexts