Copper-catalyzed preparation of <i>N</i>-aroylated sulfoximines from methylarenes
作者:Anguo Hou、Zijian Zhao
DOI:10.1080/00397911.2017.1318444
日期:2017.7.3
ABSTRACT A copper-catalyzed methodology for the preparations of N-aroylated sulfoximines from methylarenes was herein demonstrated. The transformation proceeded with the assistance of external oxidant tert-butyl hydroperoxide, requiring for no additional solvents or ligands. The good compatibility and high efficiency of the newly developed protocol were well described by 21 examples and up to 91% yields
Transition metal-free aroylation of NH-sulfoximines with methyl arenes
作者:Ya Zou、Jing Xiao、Zhihong Peng、Wanrong Dong、Delie An
DOI:10.1039/c5cc05483d
日期:——
An iodine-catalyzed N-aroylation of NH-sulfoximines with methyl arenes was herein demonstrated without participation of external organic solvents, transition metal-catalysts or ligands.
Palladium‐Catalyzed Decarboxylative
<i>ortho</i>
‐C(sp
<sup>2</sup>
)−H Aroylation of
<i>N</i>
‐Sulfoximine Benzamides at Room Temperature
作者:Prasenjit Das、Promita Biswas、Joyram Guin
DOI:10.1002/asia.201901759
日期:2020.3.16
A palladium-catalyzed method for the decarboxylative ortho C-H acylation of N-sulfoximine benzamides is developed at room temperature. The catalytic method enables easy access to various functionalized 2-aroylaromatic carboxylic acid derivatives in good isolated yields. Based on our mechanistic studies, a Pd(II)/Pd(IV) catalytic cycle that involves aroyl radical intermediate is proposed for the reaction
Visible light (provided by blue LEDs) induces a very smooth C–C-bond cleavage (analogous to a Norrish Type 1 reaction), which allows to use simple ketones for N-aroylations of sulfoximines.
可见光(由蓝色LED提供)诱导非常平滑的C-C键断裂(类似于Norrish Type 1反应),这使得可以使用简单的酮对亚砜胺进行N-芳基化。
Electrochemical <i>N</i>-acylation and <i>N</i>-α-ketoacylation of sulfoximines <i>via</i> the selective decarboxylation and dehydration of α-ketoacids
作者:Chen Kang、Mingzhe Li、Wenxiu Huang、Shoucai Wang、Mengyu Peng、Longqiang Zhao、Guangbin Jiang、Fanghua Ji
DOI:10.1039/d3gc02674d
日期:——
compounds. However, limited reports exist for their selective functionalization via green and efficient protocols. Herein, we describe an electrochemical N-acylation and N-α-ketoacylation of sulfoximines via the selective decarboxylation and dehydration of α-ketoacids. These two reactions use electricity as a “traceless” oxidant and α-ketoacid as a selective “acyl” or “α-ketoacyl” source. A broad range of