pyrazolones with alkynes has been developed. This reaction provides a convenient route to synthesize spiropentadiene pyrazolones in good to excellent yields at room temperature, exhibiting good functional group tolerance, gram scalability, and high regioselectivity. Of note, the α-arylidene pyrazolone was introduced as a novel C3 synthon in C–H activation/annulation.
已经开发了用Rh催化烯醇定向的形式sp 3 C–H活化/环炔基的α-亚芳基
吡唑啉酮。该反应提供了在室温下以良好至优异的产率合成螺
戊二烯吡唑啉酮的便利途径,表现出良好的官能团耐受性,克可扩展性和高区域选择性。值得注意的是,α-亚芳基
吡唑啉酮是在C–H活化/环化反应中作为新型C3合成子引入的。