Synthesis of highly substituted 1,3-dienes, 1,3,5-trienes, and 3,6-disubstituted cyclohexenes by the palladium-catalyzed coupling of organic halides, internal alkynes or 1,3-cyclohexadienes, and organoboranes
作者:Xiaoxia Zhang、Richard C. Larock
DOI:10.1016/j.tet.2010.03.119
日期:2010.6
A number of highly substituted 1,3-dienes and 1,3,5-trienes have been stereoselectively prepared in moderate to good yields by the coupling of vinylic iodides, internal alkynes, and organoboranes in the presence of a palladium catalyst. Optimal reaction conditions for different organoboron substrates have been developed. The analogous three-component coupling of aryl halides, 1,3-cyclohexadiene, and
在钯催化剂的存在下,通过乙烯基碘化物,内部炔烃和有机硼烷的偶合,已经以中等到良好的产率立体选择性地制备了许多高度取代的1,3-二烯和1,3,5-三烯。已经开发出用于不同有机硼底物的最佳反应条件。芳基卤化物,1,3-环己二烯和硼酸的类似的三组分偶联提供了3,6-二取代的环己烯的合成上有用的途径。这些方法非常有效,并提供了一种快速合成指定的烯烃,二烯和三烯的方法,这些烯烃的制备通常需要多步合成。