Nickel-Catalyzed Borylative Coupling of Alkynes, Enones, and Bis(pinacolato)diboron as a Route to Substituted Alkenyl Boronates
作者:Subramaniyan Mannathan、Masilamani Jeganmohan、Chien-Hong Cheng
DOI:10.1002/anie.200805293
日期:2009.3.9
Three‐component coupling reactions of an alkyne, an enone, and a diboron reagent provide access to highly substituted alkenyl boronates in good to excellent yields (see scheme). The coupling is highly regio‐ and stereoselective, and the products are amenable to further functional‐group transformations. R1,R2=H, alkyl, aryl, CO2Me; R3=alkyl, Ph; R4,R5=H, alkyl.
炔烃,烯酮和二硼试剂的三组分偶联反应提供了以高产率至优异产率获得高度取代的烯基硼酸酯的方法(请参见方案)。耦合具有高度的区域选择性和立体选择性,并且这些产品适合进行进一步的官能团转化。R 1,R 2= H,烷基,芳基,CO 2 Me;R 3=烷基,Ph;R 4,R 5= H,烷基。