Cross‐Electrophile C(sp
<sup>2</sup>
)−Si Coupling of Vinyl Chlorosilanes
作者:Jicheng Duan、Ke Wang、Guang‐Li Xu、Shaolin Kang、Liangliang Qi、Xue‐Yuan Liu、Xing‐Zhong Shu
DOI:10.1002/anie.202010737
日期:2020.12.14
C−Si bond remains unexplored. Here we report a cross‐electrophile Csp2‐Si coupling reaction of vinyl/aryl electrophiles with vinyl chlorosilanes. This new protocol offers an approach for facile and precise synthesis of organosilanes with high molecular diversity and complexity from readily available materials. The reaction proceeds under mild and non‐basic conditions, demonstrating a high step economy
Ni-catalyzed cross-electrophile coupling between vinyl/aryl and alkyl sulfonates: synthesis of cycloalkenes and modification of peptides
作者:Jicheng Duan、Yun-Fei Du、Xiaobo Pang、Xing-Zhong Shu
DOI:10.1039/c9sc03347e
日期:——
providing facile access to important building blocks. We also demonstrated the possibility to apply this method for late-stage modification of peptides. A broad range of functionalized alkyl groups could be selectively introduced into tyrosine in peptidesviaC–Cbondformation, which has been a challenge to the existing procedures.
Allylboronates from Vinyl Triflates and α-Chloroboronates by Reductive Nickel Catalysis
作者:Jin-Bao Qiao、Zhen-Zhen Zhao、Ya-Qian Zhang、Kai Yin、Zhi-Xiong Tian、Xing-Zhong Shu
DOI:10.1021/acs.orglett.0c01683
日期:2020.7.2
Allylboronates are unique buildingblocks widely used in organic synthesis, but the construction of cyclic allylboranates remains a challenging subject. We demonstrate here a mild and efficient access to this type of compound through the cross-electrophile coupling of vinyl triflates and α-chloroboronates. The reaction proceeded with a good substrate scope and good functional group compatibility. The
Nickel‐Catalyzed Reductive C(sp
<sup>2</sup>
)−Si Coupling of Chlorohydrosilanes via Si−Cl Cleavage
作者:Zhen‐Zhen Zhao、Xiaobo Pang、Xiao‐Xue Wei、Xue‐Yuan Liu、Xing‐Zhong Shu
DOI:10.1002/anie.202200215
日期:2022.5.16
C−Si bond-forming reaction between R−X and Cl−Si(H)R2 was achieved using reductive nickel catalysis. This method offers access to structurally diverse aryl- and alkenylhydrosilanes from phenol and ketonederivatives. The reaction can be conducted on gram scale and allows for incorporating a hydrosilane moiety into biologically active molecules.
Synergistic silver-mediated and palladium-catalyzed nondirected olefination of aryl C–H bond: quick access to multi-substituted aryl olefins
作者:Jian Yao、Lili Shao、Xiaohong Huo、Xiaoming Wang
DOI:10.1007/s11426-023-1834-2
日期:2024.3
Abstract Transition metal-catalyzed olefination of aryl C–H bond is a powerful tool for the synthesis of alkenes. While the Pd-catalyzed oxidative C–Holefination of arenes, also known as Fujiwara-Moritani reaction, has been established as one of the most efficient methods, the substrates are largely limited to terminal olefins with electron-withdrawing group(s). Herein, we report a synergistic silver-mediated