77142-27-9Relevant academic research and scientific papers
Olefination and hydroxymethylation of aldehydes using Knochel's (dialkoxyboryl)methylcopper reagents
Sakai, Masaaki,Saito, Syunn,Kanai, Gen,Suzuki, Akira,Miyaura, Norio
, p. 915 - 924 (1996)
The in-situ preparation of [(Me2C)2O2BCH2]Cu(CN)ZnI (3) from Knochel's (dialkoxyboryl)-methylzinc reagent (2) and CuCN·2LiCl in THF, followed by its addition to aldehyde in the presence of boron trifluoride etherate yielded rather stable β-hydroxyalkylboronates (5). The thermal dehydroxyboronation or the alkaline hydrogen peroxide oxidation of 5 gave the corresponding alkenes (6) or 1,2-alkanediols (7) in high yields. The reaction provides a simple procedure for the olefination or the hydroxymethylation of aldehydes.
Organoselenium-Catalyzed Regioselective C?H Pyridination of 1,3-Dienes and Alkenes
Liao, Lihao,Guo, Ruizhi,Zhao, Xiaodan
, p. 3201 - 3205 (2017/03/17)
An efficient approach for organoselenium-catalyzed regioselective C?H pyridination of 1,3-dienes to form pyridinium salts has been developed. This method was also successfully applied to direct C?H pyridination of alkenes. Fluoropyridinium reagents, or initially loaded pyridine derivatives, acted as pyridine sources in the pyridination reactions. The obtained pyridinium salts could be further converted under different conditions. This work is the first example of catalytic C-2 direct C?H functionalization of 1,3-dienes and the first case of organoselenium-catalyzed C?H pyridination.
