Divergent Synthesis of α-Aroyloxy Ketones and Indenones: A Controlled Domino Radical Reaction for Di- and Trifunctionalization of Alkynes
作者:Farnaz Jafarpour、Meysam Azizzade、Yekta Golpazir-Sorkheh、Hamed Navid、Saideh Rajai-Daryasarei
DOI:10.1021/acs.joc.0c00967
日期:2020.6.19
Three different modes of aldehyde/alkyne assembly through a controlled radical reaction are devised. While a double C–H activation/annulation leads to indenones, a concurrent oxidation of both aldehydes and alkynes in the course of their connection offers aroyloxy ketones. Besides two types of cascade reactions starting from identical materials, through a phenylpropiolic acid substrate, a cascade three
设计了通过受控的自由基反应的醛/炔烃组装的三种不同模式。虽然两次C–H活化/环化会导致茚满,但醛和炔烃在其连接过程中同时氧化会产生芳酰氧基酮。除了从相同材料开始的两种类型的级联反应,通过苯丙酸底物外,还通过不间断的C–H功能化/环化/脱羧芳基化形成级联的3个C–C键,这是自由基反应中的一个艰巨挑战,它会产生2-芳酰基-3-芳基茚满。