Sulfonic Acid Functionalized Silica: A Mild, Reusable and Efficient Heterogeneous Catalyst for the Highly Diastereoselective Synthesis of cis-Isoquinolonic Acids
作者:Ali Karimi、Rahim Pashazadeh
DOI:10.1055/s-0029-1218595
日期:2010.2
Sulfonic acidfunctionalized silica (SAFS) is found to be a recyclable heterogeneous catalyst for the rapid and efficient synthesis of various cis-isoquinolonic acidsfrom the three-component condensation reaction of homophthalic anhydride, an amine, and an aldehyde. This reaction was highlydiastereoselective and only one diastereomer was obtained in all cases. sulfonic acidfunctionalized silica -
One-Pot, Three-Component Synthesis of<i>Cis</i>-Isoquinolonic Acids Using ZnCl<sub>2</sub>, AlCl<sub>3</sub>-SiO<sub>2</sub>as Catalyst
作者:Mohammad Hassan Mohammadi、Ali A. Mohammadi
DOI:10.1080/00397911003611786
日期:2011.1.31
Abstract ZnCl2, AlCl3-SiO2 catalyzes efficiently the three-component condensation reaction of aldehydes, amines, and homophthalic anhydride in dichloromethane to afford the corresponding cis-isoquinolonic acids in good yields at room temperature.