The copper-catalyzeddecarboxylative reactions of alkynyl carboxylic acids with aryl halides were performed under relatively mild reaction conditions. Benzofurans could be further prepared smoothly by a one-pot domino protocol on the basis of decarboxylativecross-coupling of 2-iodophenol.
作者:Changduo Pan、Fang Luo、Wenhui Wang、Zhishi Ye、Miaochang Liu
DOI:10.3184/030823409x465295
日期:2009.8
A catalytic system has been developed that used an iron/ligand combination for the Sonogashira cross coupling of terminal alkynes with aryl iodides, which affords products in good to excellent yields.
(Benz)Imidazole-Directed Cobalt(III)-Catalyzed C-H Activation of Arenes: A Facile Strategy to Access Polyheteroarenes by Oxidative Annulation
作者:Pratip Kumar Dutta、Subhabrata Sen
DOI:10.1002/ejoc.201801056
日期:2018.11.1
Cobalt catalyzed (benz)imidazole‐directedC–Hactivation of arenes provides access to polyheteroarenes by oxidative annulation.
钴催化(苯并)咪唑导向的芳烃的C–H活化可通过氧化环化获得聚杂芳烃。
NH 4 I/EtOCS 2 K promoted synthesis of substituted benzils from diphenylacetylene derivatives
作者:Shaohua Jiang、Yibiao Li、Xianglin Luo、Guoling Huang、Yan Shao、Dongli Li、Bin Li
DOI:10.1016/j.tetlet.2018.06.053
日期:2018.8
A facile protocol is described for the synthesis of benzil derivatives from readily accessible diarylacetylene derivatives using the NH4I/EtOCS2K system. This novel protocol results in excellent chemoselectivity and provided good to excellent yields. A control experiment indicated that the reaction proceeds via NH4I promoted EtOCS2K dimerization to give the corresponding dixanthogen and subsequent