Mechanochemical Solvent-Free Synthesis of Indenones from Aromatic Carboxylic Acids and Alkynes
作者:Liang Li、Guan-Wu Wang
DOI:10.1021/acs.joc.1c01472
日期:2021.10.15
solvent-free synthesis of indenones from aromatic carboxylicacids and alkynes was achieved through triflic anhydride (Tf2O)-induced cyclization reaction. A variety of indenones including a bioactive PPARγ agonist were obtained in up to 90% yield at room temperature. The present protocol has the advantages of mild reaction conditions, high reaction efficiency, and feasibility of scalable synthesis, providing
Regioselective Arylation and Alkynylation of 2,3-Dibromo-1H-inden-1-one by SuzukiMiyaura and Sonogashira Cross-Coupling Reactions
作者:Rasheed Ahmad Khera、Munawar Hussain、Nguyen Thai Hung、Nadi Eleya、Holger Feist、Alexander Villinger、Peter Langer
DOI:10.1002/hlca.201100315
日期:2012.3
SuzukiMiyaurareactions of 2,3‐dibromo‐1H‐inden‐1‐one afforded a wide range of arylated 1H‐inden‐1‐ones. Sonogashira cross‐coupling reactions gave alkynylated indenones. The reactions proceeded with very good regioselectivity in the less sterically hindered and more electron‐deficient position 3.
An efficient protocol for the synthesis of indenones has been developed from the annulation of benzoic esters and internal alkynes by exploiting cobalt catalyst.
通过利用钴催化剂,通过苯甲酸酯和内部炔烃的环化,已经开发出一种有效的合成茚满的方案。
Efficient indenones synthesis via iridium-catalyzed decarboxylative annulation between 2-oxo-2-phenylacetic acids and alkynes
作者:Xiaobo Yu、Shudong Geng、Guanchen Liu、Weijie Guo、Jianhui Wang
DOI:10.1016/j.jorganchem.2018.09.011
日期:2019.1
Efficient iridium-catalyzed decarboxylative annulation reactions between 2-oxo-2-phenylacetic acids and alkyne derivatives has been achieved. [IrCp*Cl2]2 with a (CH3OC6H4)3P ligand, AgSbF6 and Cu(OAc)2 additives was the most efficient catalytic system for this transformation. This reaction is suitable for a broad range of alkynes and 2-oxo-2-phenylacetic acids and a variety of indenone derivatives
made in transformations of unstrained benzylic (tert-)alcoholsthrough β-aryl elimination, catalytic carbonylation has not yet been developed extensively because alkoxycarbonylation is probably favored over β-aryl elimination. In this letter, we report on the rhodium(I)-catalyzed carbonylative annulation of α,α-dimethyl-(2-bromoaryl)methanols with internal alkynes using furfural leading to the formation