Cross coupling of sulfonyl radicals with silver-based carbenes: a simple approach to β-carbonyl arylsulfones
作者:Hanghang Wang、Pengcheng Lian、Yonggao Zheng、Jingjing Li、Xiaobing Wan
DOI:10.1039/d0ob00091d
日期:——
A radical–carbene coupling reaction of sulfonyl radicals and silver-based carbenes has been well established, which provides an efficient approach to various β-carbonyl arylsulfones.
Copper-Mediated 1,2-Difunctionalization of Styrenes with Sodium Arylsulfinates and<i>tert</i>-Butyl Nitrite: Facile Access to α-Sulfonylethanone Oximes
作者:Ji Yang、Yan-Yun Liu、Ren-Jie Song、Zhi-Hong Peng、Jin-Heng Li
DOI:10.1002/adsc.201600109
日期:2016.7.14
A new copper‐mediated synthesis of α‐sulfonylethanone oximes from styrenes, sodiumarylsulfinates and tert‐butyl nitrite (t‐BuONO; TBN) is presented. This intermolecular three‐component method enables the one‐step formation of CN and CS bonds under mild conditions, and represents a new, straightforward approach to α‐sulfonylethanone oximes.
Oxidative Sulfonylation of Hydrazones Enabled by Synergistic Copper/Silver Catalysis
作者:Jun Xu、Chao Shen、Xian Qin、Jie Wu、Pengfei Zhang、Xiaogang Liu
DOI:10.1021/acs.joc.0c02249
日期:2021.3.5
A copper/silver-cocatalyzed protocol for oxidative sulfonylation of hydrazones is demonstrated. A wide range of β-ketosulfones and N-acylsulfonamides are directly synthesized in moderate to good yields. Our work provides a viable method for scalable preparation of β-ketosulfone derivatives that have found wide applications in the pharmaceutical industry.
Visible-light-promoted<i>E</i>-selective synthesis of α-fluoro-β-arylalkenyl sulfides<i>via</i>the deoxygenation/isomerization process
作者:Yuxiu Li、Xiangqian Li、Xiaowei Li、Dayong Shi
DOI:10.1039/d0cc08254f
日期:——
Regioselective synthesis of α-fluoro-β-arylalkenyl sulfides has been established with gem-difluoroalkenes and sodium sulfinates in a transition-metal-free manner. A series of control experiments were executed to demonstrate thiol radicals and anions as the proposed intermediates. Notably, regioselective Z → E isomerization was achieved under green light irradiation in the absence of a photoinitiator
Iodine/TBHP-Promoted One-Pot Deoxygenation and Direct 2-Sulfonylation of Quinoline<i>N</i>-Oxides with Sodium Sulfinates: Facile and Regioselective Synthesis of 2-Sulfonylquinolines
A highly efficient iodine/TBHP-mediated one-pot deoxygenative and regioselective C2-sulfonylation of quinoline N-oxides with sodium sulfinate salts has been developed. This metal, base and phosphorus-free protocol employs readily accessible and easy to handle reagents, and can be conveniently carried out at room temperature under mild conditions, providing an alternative access to a series of C2 sulfonyl