Furan ring opening–indole ring closure: SnCl2-induced reductive transformation of difuryl(2-nitroaryl)methanes into 2-(2-acylvinyl)indoles
作者:Maxim G. Uchuskin、Natalia V. Molodtsova、Vladimir T. Abaev、Igor V. Trushkov、Alexander V. Butin
DOI:10.1016/j.tet.2012.03.069
日期:2012.6
2-(2-acylvinyl)-3-(5-alkyl-2-furyl)indoles by reductive recyclization of bis(5-alkyl-2-furyl)(2-nitroaryl)methanes is reported. This transformation was carried out by heating the substrates with SnCl2·2H2O in ethanol. The intermediate nitrosoarene moiety interacted with the furan ring via electrophilic nitrogen attack onto the C(2) position of the furan ring. It was shown that the related bis(5-alkyl
JONES G.; MCKINLEY W. H., J. CHEM. SOC. PERKIN TRANS., PART 1, NO 3, 599-602
作者:JONES G.、 MCKINLEY W. H.
DOI:——
日期:——
Reduction of bis(5-alkyl-2-furyl)(2-nitroaryl)methane with aqueous titanium trichloride solution
作者:Dong-Kun Li、Jing-Yi Tan、Wei Deng、Zheng-Yang Xu
DOI:10.1016/j.tet.2021.132407
日期:2021.10
In this article, we introduces a new method for the synthesis of substituted indole by reductive recyclization of bis(5-alkyl-2-furyl)(2-nitroaryl)methane. Bis(5-alkyl-2-furyl)(2-nitroaryl)methane undergo reduction to provide indole or aniline. In the process of research, we found that the chemoselecitivity of reduction was controlled by subtle differences in the electronic effects of the substrate