Cross-Coupling of Sodium Sulfinates with Aryl, Heteroaryl, and Vinyl Halides by Nickel/Photoredox Dual Catalysis
作者:Huifeng Yue、Chen Zhu、Magnus Rueping
DOI:10.1002/anie.201711104
日期:2018.1.26
catalyzed sulfonylation reaction of aryl, heteroaryl, and vinylhalides has been achieved for the first time. This newly developed sulfonylation protocol provides a versatile method for the synthesis of diverse aromatic sulfones at room temperature and shows excellent functional group tolerance. The electrophilic coupling partners are not limited to aryl, heteroaryl, and vinyl bromides and iodides, but also
By using formamides as amine sources, a novel and efficient KO-t-Bu mediated amination of sodium sulfinates has been developed. The reaction utilizes readily available starting materials under metal-free conditions, thus providing an alternative and attractive route to sulfonamides.
Sulfonylation of Aryl Halides by Visible Light/Copper Catalysis
作者:Qiuli Yan、Wenwen Cui、Xiuyan Song、Guiyun Xu、Min Jiang、Kai Sun、Jian Lv、Daoshan Yang
DOI:10.1021/acs.orglett.1c01050
日期:2021.5.7
An efficient visible-light-assisted, copper-catalyzed sulfonylation of arylhalides with sulfinates is reported. In our protocol, a single ligand CuI photocatalyst formed in situ was used in the photocatalytic transformation. Diverse organosulfones were obtained in moderate to good yields. This strategy demonstrates a promising approach toward the synthesis of diverse and useful organosulfones.
Diastereoselective Monofluorocyclopropanation Using Fluoromethylsulfonium Salts
作者:Renate Melngaile、Arturs Sperga、Kim K. Baldridge、Janis Veliks
DOI:10.1021/acs.orglett.9b02867
日期:2019.9.6
Diarylfluoromethylsulfoniumsalts, alternatives to freons or advanced fluorinated building blocks, are bench stable and easy-to-use sources of direct fluoromethylene (:CHF) transfer to alkenes. These salts enabled development of a trans-selective monofluorinated Johnson-Corey-Chaykovsky reaction with vinyl sulfones or vinyl sulfonamides to access synthetically challenging monofluorocyclopropane scaffolds
Pd(OAc)2-Catalyzed Desulfinative Cross-Coupling of Sodium Sulfinates with β-Bromostyrenes: Synthesis of Tamoxifen
作者:Meng-Yang Chang、Yu- Cheng、Pei- Sun
DOI:10.1055/s-0036-1588705
日期:2017.6
cross-coupling of (Z)-β-halostyrenes with sodiumsulfinates in the presence of PPh3 and Na2CO3 at reflux in good yields is reported. The stereocontrolled cross-coupling process provides a series of sulfonylmethyl (Z)-stilbenes. A synthesis of tamoxifen was studied. A Pd(OAc)2-catalyzed desulfinative cross-coupling of (Z)-β-halostyrenes with sodiumsulfinates in the presence of PPh3 and Na2CO3 at reflux
摘要 报道了在PPh 3和Na 2 CO 3的存在下,Pd(OAc)2催化的(Z)-β-卤代苯乙烯与亚磺酸钠的脱硫交叉偶联,收率很高。立体控制的交叉偶联过程提供了一系列磺酰基甲基(Z)-苯乙烯基苯甲酸酯。研究了他莫昔芬的合成。 报道了在PPh 3和Na 2 CO 3的存在下,Pd(OAc)2催化的(Z)-β-卤代苯乙烯与亚磺酸钠的脱硫交叉偶联,收率很高。立体控制的交叉偶联过程提供了一系列磺酰基甲基(Z)-苯乙烯基苯甲酸酯。研究了他莫昔芬的合成。