An efficient and convenient palladium-catalyzed carbonylative procedure for the synthesis of bis(indolyl)methanes has been established for the first time. With TFBen (benzene-1,3,5-triyl triformate) as the solid CO source, aryl iodides and indoles were transformed into the corresponding bis(indolyl)methane derivatives in moderate to excellent yields.
Eutectic salts promote green synthesis of bis(indolyl) methanes
作者:Najmadin Azizi、Zohreh Manocheri
DOI:10.1007/s11164-011-0479-4
日期:2012.9
A convenient and rapid method for the electrophilic substitution reaction of indoles with carbonyl compounds has been developed by using deep eutectic solvent as green and reusable catalysts to afford the corresponding bis(indolyl) methanes in excellent yields at room temperature under mild reaction conditions.
RuCl3·3H2O Catalyzed Reactions: Facile Synthesis of Bis(indolyl)methanes under Mild Conditions
作者:Hong-En Qu、Chen Xiao、Ning Wang、Kai-Hui Yu、Qiao-Sheng Hu、Liang-Xian Liu
DOI:10.3390/molecules16053855
日期:——
RuCl3·3H2O was found to be an effective catalyst for reactions of indoles, 2-methylthiophene, and 2-methylfuran with aldehydes to afford the corresponding bis(indolyl)methanes, bis(thienyl)methanes, and bis(fur-2-yl)methanes in moderate to excellent yields. Experimental results indicated that mono(indolyl)methanol is not the reaction intermediate under these reaction conditions.
Diazonium salt as a versatile, efficient and mild catalyst for reductive aminations of carbonyls and syntheses of bis(indolyl)methanes
作者:Cun-Wei Qian、Xian Li、Wei Xiang、Meng-Qing Gu
DOI:10.1016/j.tet.2023.133789
日期:2024.1
diazonium salts as catalysts to catalyze reductive aminations of carbonyls and the synthesis of bis (3-indolyl)methane derivatives. The catalytic system showed good tolerance to substituents in the substrate in these two reactions. The separation yields of reductive aminations range from moderate to excellent. The separation yield of the reaction for synthesizing bis(3-indolyl)methane derivatives ranges
TEMPO/CuI synergetic catalyzed oxidative cross-coupling of indoles with benzylamines: Synthesis of bis(indolyl)phenylmethanes
作者:Meixiang Liao、Xiaoyun Zhang、Pengfei Yue
DOI:10.1080/00397911.2018.1459722
日期:2018.7.3
TEMPO/CuI was found to be an effective catalyst for the cross-coupling of indoles with benzylic amines affording the corresponding bis(indolyl)phenylmethanes under air atmosphere at room temperature in good to excellent yields. The efficiency, easy workup, simplicity, and chemoselectivity of this protocol provide a green and low-cost procedure for the synthesis of these compounds.[GRAPHICS].