Synthesis of NH‐Sulfoximines by Using Recyclable Hypervalent Iodine(III) Reagents under Aqueous Micellar Conditions
作者:Guocai Zhang、Hongsheng Tan、Weichun Chen、Hong C. Shen、Yue Lu、Changwu Zheng、Hongxi Xu
DOI:10.1002/cssc.201903430
日期:2020.3.9
The synthesis of NH-sulfoximines from sulfides has been first developed under mild conditions in an aqueous solution with surfactant TPGS-750-M as the catalyst at room temperature. In this newly developed process, a simple and convenient recycling strategy to regenerate the indispensable hypervalent iodine(III) is used. The resulting 1,2,3-trifluoro-5-iodobezene can be recovered almost quantitively
Iron(II)-Catalyzed Direct Synthesis of NH Sulfoximines from Sulfoxides
作者:Hao Yu、Zhen Li、Carsten Bolm
DOI:10.1002/anie.201710498
日期:2018.1.2
Free NH‐sulfoximines were directly prepared from sulfoxides through iron catalysis by applying a readily available, shelf‐stable hydroxylamine triflic acid salt. No additional oxidant is needed, and the substrate scope is broad, including a range of heterocyclic compounds.
Rhodium-catalyzed direct synthesis of unprotected NH-sulfoximines from sulfoxides
作者:Jinmin Miao、Nigel G. J. Richards、Haibo Ge
DOI:10.1039/c4cc04349a
日期:——
A novel rhodium-catalyzed imination of sulfoxides using O-(2,4-dinitrophenyl)hydroxylamine is developed under mild conditions with good functional group tolerance. This method provides an efficient access to free NH-sulfoximines, an important structural unit in a variety of biologically active compounds.
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。
Ultrafast <i>N</i>-arylation of sulfoximines enabled by micellar catalysis in water