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
Microwave-Accelerated N-Acylation of Sulfoximines with Aldehydes under Catalyst-Free Conditions
作者:Kamal K. Rajbongshi、Srinivas Ambala、Thavendran Govender、Hendrik G. Kruger、Per I. Arvidsson、Tricia Naicker
DOI:10.1055/s-0039-1691589
日期:2020.4
An efficient catalyst-free radical cross-coupling reaction between aromatic aldehydes and sulfoximines was developed. The reaction took place in the presence of N-bromosuccinimide as the radical initiator under microwave irradiation to afford the corresponding acylated sulfoximines in moderate to excellent yields (27 examples). This protocol proved to be rapid, easy to handle, and applicable to a broad
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。