ArC(CH 3 )(SO 2 Ph)OMs 和 α-溴亚硫酸盐 ArC(CH 3 )(SO 2 Ph)Br 的溶剂解脱甲磺酸盐的练习曲。L'ordre de reactiverelative lors de la solvolyse des substrats du type p-CH 3 C 6 H 4 C(CH 3 )BrE, ou E est un groupe electronegatif, est COPh>PO(OEt) 2 >CN>SOPh>CF 3 >SO 2 Ph
ArC(CH 3 )(SO 2 Ph)OMs 和 α-溴亚硫酸盐 ArC(CH 3 )(SO 2 Ph)Br 的溶剂解脱甲磺酸盐的练习曲。L'ordre de reactiverelative lors de la solvolyse des substrats du type p-CH 3 C 6 H 4 C(CH 3 )BrE, ou E est un groupe electronegatif, est COPh>PO(OEt) 2 >CN>SOPh>CF 3 >SO 2 Ph
An efficient and straightforward route to terminal vinyl sulfones via palladium-catalyzed Suzuki reactions of α-bromo ethenylsulfones
作者:Yewen Fang、Meijuan Yuan、Juncong Zhang、Li Zhang、Xiaoping Jin、Ruifeng Li、Jinjian Li
DOI:10.1016/j.tetlet.2016.02.065
日期:2016.3
A general and simple protocol for the synthesis of α-substituted alkenylsulfones has been developed firstly via palladium-catalyzed Suzuki reactions between α-bromo ethenylsulfones and organoborons. Using a catalyst composed of Pd(OAc)2 and SPhos, a variety of aryl, heteroaryl, and alkylboron reagents could efficiently couple with α-bromo ethenylsulfones under mild conditions. Moreover, it has been
Photocatalyzed site-selective C(sp3)-H sulfonylation of toluene derivatives and cycloalkanes with inorganic sulfinates
作者:Shaonan Zhang、Shi Cao、Yu-Mei Lin、Liyuan Sha、Cheng Lu、Lei Gong
DOI:10.1016/s1872-2067(21)63953-0
日期:2022.3
The development of practical methods for the direct and selective C(sp3)-H functionalization of hydrocarbons is an attractive topic in synthetic chemistry. Although the radical-mediated hydrogen atom transfer (HAT) process has shown considerable potential in such reactions, it still faces fundamental problems associated with reactivity and selectivity. Herein, we report a convenient and economic approach
开发用于烃的直接和选择性C( sp 3 )-H 官能化的实用方法是合成化学中的一个有吸引力的课题。尽管自由基介导的氢原子转移 (HAT) 过程在此类反应中显示出相当大的潜力,但它仍然面临与反应性和选择性相关的基本问题。在此,我们报告了一种方便且经济的位点选择性 C( sp 3 ) -H 磺酰化方法光诱导的 HAT 催化。使用共轭多环醌作为直接 HAT 光催化剂,市售无机亚磺酸盐作为磺酰化源,三氟甲磺酸铜作为廉价氧化剂,多种甲苯衍生物和环烷烃在温和条件下转化为生物和合成有趣的砜产品。机理研究表明,反应顺序涉及直接 HAT 诱导的自由基形成和随后的铜介导的有机金属过程以形成 CS 键。这种方法提供了一个吸引人的机会,可以从丰富的碳氢化合物起始材料和廉价的试剂中提供高附加值的产品。
Palladium-catalyzed α-arylation/β-elimination of sulfones
Here, we disclose a palladium-catalyzed cross-coupling reaction of benzylic sulfones with aryl triflates for the synthesis of 1,1-diarylethylenes. This palladium-catalyzed transformation tolerates various benzylic sulfones, especially heteroaromatic-substituted sulfones, with good to excellent yields.
CREARY X.; MEHRSHEIKH-MOHAMMADI M. E.; EGGERS M. D., J. AMER. CHEM. SOC., 109,(1987) N 8, 2435-2442
作者:CREARY X.、 MEHRSHEIKH-MOHAMMADI M. E.、 EGGERS M. D.
DOI:——
日期:——
Solvolytic generation of .alpha.-sulfonyl and .alpha.-sulfinyl carbocations
作者:Xavier Creary、M. E. Mehrsheikh-Mohammadi、Mark D. Eggers
DOI:10.1021/ja00242a031
日期:1987.4
Etude de la solvolyse des mesylates du type ArC(CH 3 )(SO 2 Ph)OMs et des α-bromosulfoxydes ArC(CH 3 )(SO 2 Ph)Br. L'ordre de reactivite relative lors de la solvolyse des substrats du type p-CH 3 C 6 H 4 C(CH 3 )BrE, ou E est un groupe electronegatif, est COPh>PO(OEt) 2 >CN>SOPh>CF 3 >SO 2 Ph
ArC(CH 3 )(SO 2 Ph)OMs 和 α-溴亚硫酸盐 ArC(CH 3 )(SO 2 Ph)Br 的溶剂解脱甲磺酸盐的练习曲。L'ordre de reactiverelative lors de la solvolyse des substrats du type p-CH 3 C 6 H 4 C(CH 3 )BrE, ou E est un groupe electronegatif, est COPh>PO(OEt) 2 >CN>SOPh>CF 3 >SO 2 Ph