A Dual CuH- and Pd-Catalyzed Stereoselective Synthesis of Highly Substituted 1,3-Dienes
作者:Chuan-Jin Hou、Alexander W. Schuppe、James Levi Knippel、Anton Z. Ni、Stephen L. Buchwald
DOI:10.1021/acs.orglett.1c03324
日期:2021.11.19
synthetic chemistry. Herein, we report a method for the stereoselective hydroalkenylation of alkynes, utilizing readily available enol triflates. We leveraged an in situ-generated and geometrically pure vinyl-Cu(I) species to form the Z,Z- or Z,E-1,3-dienes in excellent stereoselectivity and yield. This approach allowed for the synthesis of highly substituted Z-dienes, including pentasubstituted 1,3-dienes
共轭二烯是合成化学中的通用结构单元和普遍的子结构。在此,我们报告了一种利用容易获得的烯醇三氟甲磺酸酯对炔烃进行立体选择性加氢烯基化的方法。我们利用原位生成的几何纯乙烯基-Cu(I)物种以优异的立体选择性和产率形成Z , Z - 或Z , E -1,3-二烯。这种方法可以合成高度取代的Z-二烯,包括五取代的1,3-二烯,这些物质很难通过现有方法制备。