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    • 6. 发明授权
    • Copper catalyzed coupling reactions
    • 铜催化偶联反应
    • US5405981A
    • 1995-04-11
    • US37947
    • 1993-03-26
    • Bruce H. Lipshutz
    • Bruce H. Lipshutz
    • C07C45/69C07F1/08C07F7/18
    • C07F7/1892C07C403/02C07C45/69C07C2101/14
    • A general method for sequential addition of two substituents to an .alpha.,.beta.-unsaturated ketone (enone), involving 1,4-conjugate addition of a desired substituent group to the enone to form an intermediate enolate, followed by electrophilic trapping of the enolate, wherein catalytic amounts of copper are employed in combination with another organometallic compound to effect the conjugate addition via a reactive cuprate reagent and yet provide an intermediate enolate species based on the other organometallic compound which is amenable to trapping by a suitable electrophile. Pursuant to this method, a true three-component coupling reaction can be effected starting from an alkyne, an enone, and an electrophile.
    • 用于向α,β-不饱和酮(烯酮)中顺序添加两个取代基的一般方法,其涉及将所需取代基加成到所述烯酮中以形成中间体烯醇化物,然后亲和性捕获烯醇化物, 其中催化量的铜与另一种有机金属化合物组合使用以通过反应性铜酸盐试剂进行共轭加成,并提供基于其它有机金属化合物的中间体烯醇化物,所述其它有机金属化合物适于通过合适的亲电试剂捕获。 根据该方法,可以从炔烃,烯酮和亲电子试剂开始进行真正的三组分偶联反应。