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
MeOTf-induced carboannulation of arylnitriles and aromatic alkynes: a new metal-free strategy to construct indenones
作者:Xiaoyu Yan、Song Zou、Peng Zhao、Chanjuan Xi
DOI:10.1039/c4cc00088a
日期:——
MeOTf-induced carboannulation of arylnitriles and aromatic alkynes for synthesis of indenones under metal-free conditions has been described. When ortho-substitutedbenzonitriles were used, indeno[1,2-c]isoquinolines were formed.
An efficient photocatalysis has been developed for the synthesis of indanone using low-energy greenlight as input energy. This methodology provides a greener avenue to construct indanone through a metal-free photocatalytic radical annulation reaction between α-keto acid and internal alkyne.