We report here a two-in-one strategy for the Pd(II)-catalyzed tandem C–H arylation/decarboxylative annulation between readily available cyclic diaryliodoniumsalts and benzoic acids. The carboxylic acid functionality can be used as both a directing group for the ortho-C–H arylation and the reactive group for the tandem decarboxylative annulation. By a step-economical double cross-coupling annulation
A novel and facile approach for the synthesis of triphenylenes has been developed via palladium-catalyzed coupling of 2-iodobiphenyls and iodobenzenes. The reaction involves dual palladium-catalyzed C–H activations and double palladium-catalyzed C–C bond formations. A range of unsymmetrically functionalized triphenylenes can be synthesized with the reaction. The approach features readily available
Palladium-Catalyzed Synthesis of Triphenylenes via Sequential C–H Activation and Decarboxylation
作者:Yuzhong Yang、Bang Zhou、Xiaoming Zhu、Guobo Deng、Yun Liang、Yuan Yang
DOI:10.1021/acs.orglett.8b02310
日期:2018.9.7
A novel tandem intermolecular decarboxylative coupling reaction of o-bromobenzoic acids and aryl iodides has been developed. The method affords a range of unsymmetrically triphenylenes and displays unique regioselectivity and broad substrate scope. Mechanistically, palladium/norbornene-catalyzed C–H activation and subsequent double decarboxylative coupling reactions were involved. Moreover, the triphenylenes
Synthesis of triphenylene derivatives by Pd-catalyzed Suzuki coupling/intramolecular C H activation between arylboronic acids and dibromobiphenyls
作者:Jingxuan Tu、Gaoqiang Li、Xiaoqian Zhao、Feng Xu
DOI:10.1016/j.tetlet.2018.11.052
日期:2019.1
An efficient and regioselective synthesis of functionalized triphenylenes via palladium-catalyzed Suzuki-Miyaura coupling and subsequent intramolecular CH activation between arylboronic acids and dibromobiphenyls was developed. This methodology showed excellent atomic economy and regiospecificity as well as synthetic feasibility of unsymmetrical triphenylenes.
Decarbonylative/decarboxylative [4 + 2] annulation of phthalic anhydrides and cyclic iodoniums towards triphenylenes
作者:Lingyu Huang、Rongrong Xie、Chaoying Wen、Yanyan Yang、Yiwen Wang、Shiyan Ren、Bin Huang、Shiqing Li
DOI:10.1039/d2ob00500j
日期:——
A palladium-catalyzed decarbonylative/decarboxylative annulation of phthalic anhydrides with cyclic diaryliodonium salts to synthesize triphenylenes has been developed.