Visible-light-induced and iron-catalyzed methylation of N-arylacrylamides with dimethyl sulphoxide: a convenient access to 3-ethyl-3-methyl oxindoles
作者:Zuguang Xie、Pinhua Li、Yu Hu、Ning Xu、Lei Wang
DOI:10.1039/c7ob00779e
日期:——
A visible-light-induced and iron-catalyzed methylation of arylacrylamides by dimethyl sulphoxide (DMSO) is achieved, leading to 3-ethyl-3-methyl indolin-2-ones in high yields. This reaction tolerates a series of functional groups, such as methoxy, trifluoromethyl, cyano, nitro, acetyl and ethyloxy carbonyl groups. The visible-light promoted radical methylation and arylation of the alkenyl group are
通过二甲基亚砜(DMSO)实现了可见光诱导的铁催化的芳基丙烯酰胺甲基化,从而以高收率得到了3-乙基-3-甲基吲哚-2-酮。该反应容许一系列官能团,例如甲氧基,三氟甲基,氰基,硝基,乙酰基和乙氧基羰基。烯基的可见光促进的自由基甲基化和芳基化参与该反应。