Palladium-Catalyzed Synthesis of Conjugated Allenynes via Decarboxylative Coupling
作者:Mary K. Smith、Jon A. Tunge
DOI:10.1021/acs.orglett.7b01751
日期:2017.10.20
A new strategy to access conjugated allenynes via a decarboxylative coupling of propargyl esters of propiolates has been developed. In this process, allenyl-palladium intermediates are coupled with acetylides that are generated in situ to form the conjugated allenynes. Finally, the coupling is demonstrated to be highly stereospecific, providing a route to enantioenriched allenes.
已经开发了通过丙酸酯的炔丙基酯的脱羧偶联来获得共轭的烯炔的新策略。在此过程中,将烯丙基钯中间体与就地生成的乙炔化物偶联,以形成共轭的烯炔。最后,证明该偶联是高度立体定向的,提供了通往对映体富集的烯的途径。