Chemodivergent coupling of α-acylketene dithioacetals with diazo compounds has been realized under catalyst control. The Ru(II)-catalyzed C–H activation occurred at the olefinic position, and 1:2 coupling with α-diazoketoesters leads to furfurylation. In contrast, the Rh(III)-catalyzed C–H functionalization occurred at both the olefinic and the ortho C(aryl)–H positions, and [4 + 2] annulation afforded
在催化剂控制下已经实现了α-酰基
乙烯酮二
硫缩醛与重氮化合物的
化学发散偶联。Ru(II)催化的C–H活化发生在烯烃位置,并且与α-二重
氮酮酸酯的1:2偶联导致
糠醛化。相比之下,Rh(III)催化的C–H功能化同时发生在烯烃和邻位C(芳基)–H位置,[4 + 2]环烷基化提供
萘酮。已经进行了合成应用以证明耦合系统的有用性。