Annulative π-Extension of Unactivated Benzene Derivatives through Nondirected C–H Arylation
作者:Jae Bin Lee、Min Ho Jeon、Jeong Kon Seo、Gert von Helden、Jan-Uwe Rohde、Bum Suk Zhao、Jongcheol Seo、Sung You Hong
DOI:10.1021/acs.orglett.9b02583
日期:2019.9.6
to polycyclicarenes. Herein, we disclose a nondirected annulation approach of unactivated simple arenes. The palladium-catalyzed 2-fold C-H arylation event facilitates tandem C-C linkage relays to furnish fully benzenoid triphenylene frameworks using cyclic diaryliodonium salts. The inseparable regioisomeric mixture of 1- and 2-methyltriphenylenes is identified by the combined analysis of ion mobility-mass
Palladium-Catalyzed Decarboxylative Annulation Reaction of Aryl Iodides and Methyl 2-Haloarenecarboxylates
作者:Ying Fu、Xi Chen、Hao Chen、Jia-Jia Liu、Zhengyin Du
DOI:10.1021/acs.orglett.4c01484
日期:2024.6.28
A ligand-free palladium-catalyzed and norbornadiene-mediated annulation reaction of iodoarenes with methyl 2-haloarenecarboxylates is reported. The sequentially accomplished reaction comprises intermolecular C–H arylation, followed by intramolecular decarboxylative annulation, affording various valuable phenanthrenes. This reaction protocol could be expanded to triphenylene syntheses whereby norbornene
报道了碘芳烃与 2-卤代芳烃甲酸甲酯的无配体钯催化和降冰片二烯介导的环化反应。随后完成的反应包括分子间C-H芳基化,然后是分子内脱羧环化,得到各种有价值的菲。该反应方案可以扩展到苯并菲的合成,其中降冰片烯是助催化剂。有趣的是,甲酯的脱羧是通过溶剂介导的 C Me -O 键断裂完成的。