在本文中,我们描述了通过C-O键的活化,铁催化的烯基和芳基氨基甲酸酯的硼酸酯化反应。该方案显示出高效率,广泛的底物范围以及生物相关化合物的后期硼化,因此在药物化学中提供了潜在的应用。而且,该方法能够使酚衍生物进行正交转化,并且还为合成多取代的芳烃提供了良好的机会。初步的机理研究表明,通过自由基途径的Fe II / Fe III催化循环可能与反应有关。
The first nickel-catalyzed C–H arylations and alkenylations of imidazoles with phenol and enol derivatives are described.
第一个镍催化的咪唑与酚和烯醇衍生物的C-H芳基化和烯基化反应被描述了。
A regiospecific and stereospecific route to enol carbonates and carbamates: closer look at a “naked anion”
作者:R.A. Olofson、John Cuomo
DOI:10.1016/s0040-4039(00)71514-0
日期:1980.1
A fluoride ion catalyzed reaction which affords the title compounds in good yield from enolsilylethers is described.
描述了一种氟离子催化的反应,其从烯醇甲硅烷基醚以良好的产率提供标题化合物。
Nickel-Catalyzed Efficient and Practical Suzuki−Miyaura Coupling of Alkenyl and Aryl Carbamates with Aryl Boroxines
作者:Li Xu、Bi-Jie Li、Zhen-Hua Wu、Xing-Yu Lu、Bing-Tao Guan、Bi-Qin Wang、Ke-Qing Zhao、Zhang-Jie Shi
DOI:10.1021/ol9029534
日期:2010.2.19
Suzuki−Miyaura coupling of unactivated alkenyl carbamates is described to construct polysubstituted olefins. The developed process is also suitable for heteroaromatic and even electron-richaromatic carbamates.
Rather u(Ni)que: Two new CHalkenylationreactions, that is CH/CO alkenylation and decarbonylative CHalkenylation, of azoles are uniquely catalyzed by Ni/dcype. These azole alkenylationreactions are successfully applied to the convergent formal synthesis of siphonazole B.
而U(Ni)的阙:两个新的C ħ烯基化反应,即是C H / C Ò烯基和decarbonylativeÇ ħ烯基,唑类的Ni / dcype唯一地催化。这些唑烯基化反应已成功应用于虹吸管B的聚合形式合成中。
Pd-Catalyzed Cross-Coupling of Highly Sterically Congested Enol Carbamates with Grignard Reagents via C–O Bond Activation
作者:Zicong Chen、Chau Ming So
DOI:10.1021/acs.orglett.0c01127
日期:2020.5.15
The palladium-catalyzed cross-coupling reaction of enol carbamates to construct highly sterically congested alkenyl compounds is presented for the first time. This protocol demonstrates the potential of using thermally stable and highly atom-economic enol electrophiles as building blocks in bulky alkene synthesis. This reaction accommodates a broad substrate scope with excellent Z/E isomer ratios,