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.
carbonylation of aryl halides followed by nucleophilic attack of NH-sulfoximines. This reaction tolerates a range of aryl iodides and sulfoximines to provide the N-aroyl sulfoximines in good to excellent yields. Less reactive arylbromides also underwent sulfoximinocarbonylation and afforded the products. This methodology is free from phosphine ligands. The heterogeneous Pd/Ccatalyst was successfully
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。
Superbase-Mediated <i>gem</i>-Difluoroalkenylations of Sulfoximines
作者:Xianliang Wang、Chenyang Wang、Carsten Bolm
DOI:10.1021/acs.orglett.2c03046
日期:2022.10.14
At ambient temperature, deprotonated sulfoximines react with 1-trifluoromethylalkenes to provide either N- or C-gem-difluoroalkenylated products. The reaction site depends upon the N substituent of the starting material. The optimal conditions involve the use of a superbasic system NaOH in dimethyl sulfoxide. The reactions are characterized by a broad substrate scope and medium to high yields. Scale-up
在环境温度下,去质子化亚砜亚胺与 1-三氟甲基烯烃反应生成 N-或 C-偕二氟烯基化产物。反应位点取决于起始材料的 N 取代基。最佳条件包括在二甲亚砜中使用超碱性系统 NaOH。该反应的特点是底物范围广,产率中高。N-和C- gem-二氟烯基化的放大实验进展顺利。在分子氧下用芳基硫醇处理N-二氟烯丙基亚砜亚胺得到相应的氧化加成产物。