A convenient approach for the synthesis of substituted pyrroles by using phosphoric acid as a catalyst and their photophysical properties
作者:Yusuf Ajibola Ibrahim、Jiahui Li、Liankun Ai、Baolin Li
DOI:10.1016/j.molstruc.2021.132123
日期:2022.3
pyrrole compounds aside from six knowns, including the synthetically challenging tetra- and penta-substituted pyrroles from the corresponding 1,4-dicarbonyl through Paal-Knorr synthesis in the presence of 5% phosphoric acid as the catalyst. Our method is noteworthy for cheap catalyst, uncomplicated experimental setup under air atmosphere, scalability, and excellent yields. The fluorescence of some
Copper(II)-Promoted C-C Bond Formation by Oxidative Coupling of Two C(sp<sup>3</sup>)-H Bonds Adjacent to Carbonyl Group to Construct 1,4-Diketones and Tetrasubstituted Furans
作者:Shuai Mao、Ya-Ru Gao、Shao-Liang Zhang、Dong-Dong Guo、Yong-Qiang Wang
DOI:10.1002/ejoc.201403274
日期:2015.2
The copper(II)-promoted C–C bond formation from the coupling of two C(sp3)–H bonds that are adjacent to a carbonylgroup was achieved. This protocol offers a simple and efficient approach to 2,3-disubstituted 1,4-diketones and tetrasubstituted furans. This method features a wide substrate scope and high functional group tolerance.
通过与羰基相邻的两个 C(sp3)-H 键的偶联,实现了铜 (II) 促进的 C-C 键形成。该协议为 2,3-二取代 1,4-二酮和四取代呋喃提供了一种简单有效的方法。该方法具有广泛的底物范围和高官能团耐受性。
Shridhar, D. R.; Jogibhukta, M.; Rao, P. Shanthan, Indian Journal of Chemistry - Section B Organic and Medicinal Chemistry, 1983, vol. 22, # 12, p. 1187 - 1190
作者:Shridhar, D. R.、Jogibhukta, M.、Rao, P. Shanthan、Handa, Vijay K.