Cobalt-Catalyzed Coupling of Benzoic Acid C−H Bonds with Alkynes, Styrenes, and 1,3-Dienes
作者:Tung Thanh Nguyen、Liene Grigorjeva、Olafs Daugulis
DOI:10.1002/anie.201711968
日期:2018.2.5
A method for cobalt‐catalyzed, carboxylate‐directed functionalization of arene C−H bonds is reported. Alkynes, styrenes, and 1,3‐dienes can be coupled with benzoic acids to provide cyclic products in good yields. The reactions proceed in the presence of a cobalt(II) hexafluoroacetylacetonate catalyst, (TMS)2NH base, Ce(SO4)2 cooxidant, and oxygen oxidant.
报道了一种用于芳烃CH键的钴催化,羧酸盐定向功能化的方法。炔烃,苯乙烯和1,3-二烯可以与苯甲酸偶联,以高收率提供环状产物。反应在六氟乙酰丙酮钴(II),(TMS)2 NH碱,Ce(SO 4)2共氧化剂和氧氧化剂的存在下进行。