Copper-Catalyzed Oxidative [3 + 2] Cycloaddition of <i>N</i>-Alkyl Pyridinium Salts to Imidazo[1,2-<i>a</i>]pyridines
作者:Yuan Zhang、Weibin Fan、Yinghua Li、Deguang Huang
DOI:10.1021/acs.joc.3c00728
日期:2023.9.1
A copper-catalyzed reaction of pyridiniumsalts and trimethylsilyl cyanide (TMSCN) in the presence of diethyl phosphite is developed. This reaction, which allows the single-step construction of biologically important 2-cyanoimidazo[1,2-a]pyridine from readily available starting materials, is realized for the first time and is feasible at the gram scale. The scope of the protocol is demonstrated with
开发了在亚磷酸二乙酯存在下吡啶鎓盐和三甲基硅烷基氰化物 (TMSCN) 的铜催化反应。该反应首次实现了从容易获得的起始材料一步构建生物学上重要的2-氰基咪唑并[1,2- a ]吡啶的反应,并且在克级是可行的。该协议的范围通过 27 个示例进行了演示。在这一一锅法中可以实现连续的双氰化和环化。TMSCN 发挥双重作用,不仅作为“CN”源,而且作为咪唑并[1,2- a ]吡啶环化的偶联伙伴。
Nuvole, Antonio; Paglietti, Giuseppe; Sanna, Paolo, Journal of Chemical Research, Miniprint, 1984, # 11, p. 3245 - 3256
作者:Nuvole, Antonio、Paglietti, Giuseppe、Sanna, Paolo、Acheson, R. Morrin
DOI:——
日期:——
Claramunt, Rosa M.; Gallo, Roger; Elguero, Jose, Journal de Chimie Physique et de Physico-Chimie Biologique, 1981, vol. 78, # 10, p. 805 - 814
作者:Claramunt, Rosa M.、Gallo, Roger、Elguero, Jose、Mathieu, Didier、Phan Tan Luu, Roger
DOI:——
日期:——
NUVOLE, A.;PAGLIETTI, G.;SANNA, P.;ACHESON, R. M., J. CHEM. RES. MICROFICHE, 1984, N 11, 356-357
作者:NUVOLE, A.、PAGLIETTI, G.、SANNA, P.、ACHESON, R. M.