A copper-catalyzed radical cross-coupling of oxime esters and activatedalkenes is accomplished for the synthesis of cyanoalkylsulfonylated oxindoles and cyanoalkyl amides via an aryl migration strategy. Specifically, the subsequent mechanism research indicates that the unique desulfonylation and sulfone addition processes were involved in the transformation. This transformation is identified as having
A metal-free decarbonylative arylalkylation of N-(arylsulfonyl)acrylamides with aliphatic aldehydes as alkylating source was developed, providing a series of α-aryl-β-alkylamides in moderate to good yields. In this reaction, the concomitant alkylation, aryl migration and desulfonylation was involved.
Acid-catalyzed cascade radical addition/cyclization of arylacrylamides with ketones
作者:Xiao-Feng Xia、Su-Li Zhu、Minglu Zeng、Zhen Gu、Haijun Wang、Wei Li
DOI:10.1016/j.tet.2015.06.106
日期:2015.9
radical addition/cyclization of arylacrylamides with ketones was described. The reaction tolerates a series of functional groups, such as nitro, methoxyl, carbonyl, bromo, chloro, fluoro, and trifluoromethyl groups. γ-Peroxyketones were also prepared using N-arylsulfonyl-acrylamides as substrates under acid-catalyzed conditions.
Silver-mediated radical aryltrifluoromethylthiolation of activated alkenes by S-trifluoromethyl 4-methylbenzenesulfonothioate
作者:Xia Zhao、Bo Yang、Aoqi Wei、Jianqiao Sheng、Miaomiao Tian、Quan Li、Kui Lu
DOI:10.1016/j.tetlet.2018.03.058
日期:2018.5
Herein, we describe the preparation of trifluoromethylthiol-substituted oxindoles by silver-mediated aryltrifluoromethylthiolation of activated alkenes, using S-trifluoromethyl 4-methylbenzenesulfonothioate as a F3CS radical source and showing that the reagent availability, mild conditions, and broad functional group compatibility of this transformation make it a viable alternative strategy of constructing
Radical trideuteromethylation with deuterated dimethyl sulfoxide in the synthesis of heterocycles and labelled building blocks
作者:Roberta Caporaso、Srimanta Manna、Sarah Zinken、Alexander R. Kochnev、Evgeny R. Lukyanenko、Alexander V. Kurkin、Andrey P. Antonchick
DOI:10.1039/c6cc07196a
日期:——
The potential of deuterated pharmaceuticals is being widely demonstrated. Here we describe the first trideuteromethylation under radical reaction conditions using deuterated dimethyl sulfoxide as reagent for the synthesis of labelled...