An efficient Friedel–Crafts alkylation for the synthesis of 3-indolyl-3-hydroxy oxindoles and unsymmetrical 3,3-diaryl oxindoles catalyzed by Dabco-based ionic liquids in water
作者:Jun Tong、Lu-Shan Huang、Da-Zhen Xu
DOI:10.1039/c7nj00174f
日期:——
A convenient and rapid method for the syntheses of 3-indolyl-3-hydroxy oxindoles and unsymmetrical 3,3-diaryl oxindoles has been developed by using Dabco-based ionic liquid catalysts. The two ionic liquid catalysts, [Dabco-H][BF4] and [Dabco-H][HSO4] were found to be highly efficient catalysts for controlled 3-indolylation of isatins in water. When [Dabco-H][BF4] was employed as the catalyst in water
I<sub>2</sub>/O<sub>2</sub>-Promoted Domino Reactions of Isatins or 3-Hydroxyindolin-2-one Derivatives with Enaminones
作者:Wen-Juan Hao、Jian-Qiang Wang、Xiao-Ping Xu、Shi-Lei Zhang、Shun-Yi Wang、Shun-Jun Ji
DOI:10.1021/jo401773j
日期:2013.12.20
I2-promoted domino reactions of isatins or 3-hydroxyindolin-2-one derivatives with enaminones under O2 conditions have been established. The reactions of isatins with enaminones afforded functionalized tetracyclic pyrrolo[2,3,4-kl]acridine derivatives in moderate to good yields through domino cyclization and C–H oxidation. The reactions of 3-hydroxyindolin-2-one derivatives with enaminones proceeded well
Experimental and theoretical investigations of regioselective functionalization of 3-hydroxy bisindoles with thiols
作者:Nitika Sharma、Rama Krishna Peddinti
DOI:10.1039/c8ob02118j
日期:——
An instant and efficientp-TSA·H2O-catalyzed sulfenylation reaction of 3-hydroxy bisindole derivatives is reported.
报道了一种由即时高效的p-TSA·H2O催化的3-羟基双吲哚衍生物磺化反应。
Cu(I)-catalyzed one-pot reactions of isatins, indoles, and amines toward unsymmetrically substituted 2-carbonylarylureas
作者:Xiangjun Peng、Xianyun Xu、Shuangyang Chen、Zeng Tian、Liangxian Liu、Qian Liu
DOI:10.1016/j.tet.2018.02.019
日期:2018.3
A series of unsymmetrical arylureas was obtained by the one-pot method for reacting isatins with indoles incorporating primary amino moieties, a significant heterocyclic skeleton for diverse pharmaceutically active structures. The reaction proceeds through Cu(I)-catalyzed C2C3 bond of the ring-opening isatins and then expands the substrates in the optimum conditions. Furthermore, selected compounds