TBAI–HBr system mediated generation of various thioethers with benzenesulfonyl chlorides in PEG<sub>400</sub>
作者:Dingyi Wang、Shengmei Guo、Rongxing Zhang、Sen Lin、Zhaohua Yan
DOI:10.1039/c6ra02302a
日期:——
An efficient procedure for the formation of C–S bonds via C–H functionalization was developed for the synthesis of aryl sulfides in good to excellent yields using TBAI–HBr system promoted direct sulfenylation of various compounds, such as phenols, pyrazolones, indoles and related heteroarenes. Low cost and widely available arylsulfonyl chlorides were used as the sulfur source to provide various sulfur-containing
An efficient and convenient protocol for iodine-mediated thiolation of phenols/phenylamines with sodium benzene-sulfinates in water has been achieved.
在水中,通过碘介导的苯磺酸钠对酚/苯胺进行硫化的高效便捷协议已经实现。
Synthesis of Asymmetric Diaryl Sulfides via HI-Mediated C(sp<sup>2</sup>)-H Sulfenylation of Arenes with Sodium Sulfinates
作者:Shengnan Sun、Hexia Ye、Tengfei Mao、Yongbiao Guo、Haibo Liu、Junchen Li、Xiaojing Bi
DOI:10.1021/acs.joc.2c02374
日期:——
A novel hydroiodic acid-promoted metal-free C(sp2)-H sulfenylation of electron-rich arenes was developed using stable and easy-to-handle sodium sulfinates as sulfur sources. Diverse kinds of asymmetric aryl sulfides were afforded in good yields from various commercially available aromatic substrates under mild conditions. Comprehensive mechanistic experiments demonstrate that RSO2SR and RSSR are the
使用稳定且易于处理的亚磺酸钠作为硫源,开发了一种新型氢碘酸促进的富电子芳烃的无金属 C(sp 2 )-H 亚磺酰化反应。在温和条件下,从各种市售芳烃底物中以良好的产率提供了多种不对称芳基硫化物。综合机理实验表明,RSO 2 SR 和 RSSR 是负责氧化还原过程的关键中间体。
Structure of phosphorous-containing functionalized poly(arylene ether) and compositions prepared therefrom
申请人:Jiangsu Yoke Technology Co., Ltd
公开号:US10563019B2
公开(公告)日:2020-02-18
A structure of phosphorous-containing functionalized poly(arylene ether), a preparation method thereof, and a composition prepared therefrom are provided. The curable (cross-linkable) composition includes an unsaturated monomer and a phosphorous-containing functionalized poly(arylene ether) having a polymerizable group and a molecular weight between 500 and 20,000. The composition provides excellent fluidity and fast curing rate. After curing, the composition exhibits excellent low dielectric coefficient and dielectric loss, high heat resistance and flame retardancy. It is suitable for prepregs, laminated sheets for printed circuits or the like.
Structure of phosphorous-containing functionalized poly(arylene ether), composition containing the same, and copper clad laminate
申请人:Jiangsu Yoke Technology Co., Ltd
公开号:US10844180B2
公开(公告)日:2020-11-24
A structure of phosphorous-containing functionalized poly(arylene ether), a preparation method thereof, and a composition prepared therefrom are provided. The curable (cross-linkable) composition includes an unsaturated monomer and a phosphorous-containing functionalized poly(arylene ether) having a polymerizable group and a molecular weight between 500 and 20,000. The composition provides excellent fluidity and fast curing rate. After curing, the composition exhibits excellent low dielectric coefficient and dielectric loss, high heat resistance and flame retardancy. It is suitable for prepregs, laminated sheets for printed circuits or the like.