Mild Rh(III)-Catalyzed C–H Activation and Annulation with Alkyne MIDA Boronates: Short, Efficient Synthesis of Heterocyclic Boronic Acid Derivatives
摘要:
Taking advantage of Rh(III)-catalyzed C-H activation reactions, we have developed a mild, short, and efficient method for the synthesis of bench-stable 3-isoquinolone MIDA boronates. The reaction is practical and scalable. The product formed has been applied in the Suzuki-Miyaura reaction with high efficiency. This strategy has also been successfully expanded to the synthesis of MIDA boronate functionalized heterocycles such as isoquinoline, pyrrole, and indole.
Indole Synthesis via Cobalt(III)-Catalyzed Oxidative Coupling of <i>N</i>-Arylureas and Internal Alkynes
作者:Zhuo-Zhuo Zhang、Bin Liu、Jing-Wen Xu、Sheng-Yi Yan、Bing-Feng Shi
DOI:10.1021/acs.orglett.6b00494
日期:2016.4.15
A mild Co(III)-catalyzed oxidative annulation of N-arylureas and internal alkynes has been developed. The use of less electrophilic ureas other than acetamides as directing groups is crucial for the reaction. A broad range of synthetically useful functional groups are compatible with this reaction, thus providing a new opportunity for the synthesis of diverse indoles.