Palladium-Catalyzed Decarboxylative Coupling of Alkynyl Carboxylic Acids and Aryl Halides
作者:Jeongju Moon、Mihee Jang、Sunwoo Lee
DOI:10.1021/jo802290r
日期:2009.2.6
2-Octynoic acid and phenylpropiolic acid were employed for the palladium-catalyzed decarboxylative coupling reaction and with a variety of arylhalides. The former needed 1,4-bis(diphenylphosphino)butane (dppb) as a ligand and the latter tri-tert-butylphosphine (PtBu3), and both required 2 equiv of tetra-n-butylammonium fluoride (TBAF) for full conversion. These reactions showed high reactivities and
Trisubstituted olefin synthesis <i>via</i> Ni-catalyzed hydroalkylation of internal alkynes with non-activated alkyl halides
作者:Xiao-Yu Lu、Mei-Lan Hong、Hai-Pin Zhou、Yue Wang、Jin-Yu Wang、Xiu-Tao Ge
DOI:10.1039/c8cc01577e
日期:——
The stereoselective synthesis of tri-substituted alkenes is challenging. Herein, we report a Ni-catalyzed regio- and stereo-selective hydroalkylation of internal alkynes with non-activated alkylhalides. This method does not use any sensitive organometallic reagents and shows good functional group compatibility, which enables the efficient synthesis of many tri-substituted olefins from readily available
Synthesis of trisubstituted olefins via nickel-catalyzed decarboxylative hydroalkylation of internal alkynes
作者:Xiao-Yu Lu、Jing-Song Li、Mei-Lan Hong、Jin-Yu Wang、Wen-Jing Ma
DOI:10.1016/j.tet.2018.10.037
日期:2018.12
A novel NiH-catalyzed decarboxylative hydroalkylation of internal alkynes has been developed. Trisubstitutedolefins were obtained in moderate to good yields with good regioselectivities. The reaction involves cis addition of NiH to the internal alkyne. The reaction shows good functional-group tolerance.
Decarboxylative/Sonogashira-type cross-coupling using PdCl<sub>2</sub>(Cy*Phine)<sub>2</sub>
作者:Yong Yang、Yee Hwee Lim、Edward G. Robins、Charles W. Johannes
DOI:10.1039/c6ra12916a
日期:——
Expedient protocol to access a wide range of internal alkynes and symmetrical di(heteroaryl)alkynesviatandem decarboxylative–Sonogashira cross-coupling.
通过串联脱羧化-Sonogashira交叉偶联方法访问广泛的内部炔烃和对称的双(杂环烷基)炔烃。
A General Palladium-Catalyzed Sonogashira Coupling of Aryl and Heteroaryl Tosylates
Coupled up: A new general palladium‐catalyzed procedure for the cross‐coupling of aryl and heteroaryltosylates is described. This highly versatile and efficient process can be used for the synthesis of a wide variety of functionalized alkynes (see scheme).