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
An efficient protocol for the synthesis of indenones has been developed from the annulation of benzoic esters and internal alkynes by exploiting cobalt catalyst.
Ferrocene-Initiated Oxidative Cyclization of Benzaldehyde with Alkyne: New Strategy to Substituted Indenones
作者:Yadong Feng、Hong Zhang、Yunliang Yu、Lei Yang、Xiuling Cui
DOI:10.1002/ejoc.201900281
日期:2019.4.30
A ferrocene‐initiated oxidativecyclization of benzaldehyde with alkyne was successfully developed as a novel strategy for the direct access to substituted indenones in high yields. The commercially available and cheap ferrocene was employed as an initiator.
Access to Indenones by Rhodium(III)-Catalyzed C–H Annulation of Arylnitrones with Internal Alkynes
作者:Zisong Qi、Mei Wang、Xingwei Li
DOI:10.1021/ol4025309
日期:2013.11
Under redox-neutral conditions, rhodium(III)-catalyzed C–H annulation of N-tert-butyl-α-arylnitrones with internal alkynes has been realized for the synthesis of indenones under mild conditions. This reaction proceeded in moderate to high yields and with good functional group tolerance.