KAl(SO4)2·12H2O: An Efficient Catalyst for the Stereoselective Synthesis of cis- Isoquinolonic Acids
摘要:
KAl(SO4)(2).12H(2)O is found to catalyze efficiently the stereoselective cyclocondensation of homophthlic anhydride with imines under mild conditions to afford the corresponding cis-isoquinolonic acids in good yields.
Iodine as a Mild, Efficient, and Cost-Effective Reagent for the Synthesis of <i>cis</i>-1-Oxo-1,2,3,4-tetrahydroisoquinoline-4-carboxylic Acids
作者:J. Yadav、B. Reddy、A. Reddy、A. Narsaiah
DOI:10.1055/s-2007-983899
日期:2007.10
Arylimines generated in situ from aromatic aldehydes and anilines undergo smooth coupling with homophthalic anhydride in the presence of 10 mol% of molecular iodine under mild and neutral conditions to afford the corresponding cis-1-oxo-1,2,3,4-tetrahydroisoquinoline-4-carboxylic acids in excellent yields with high cis selectivity. The use of iodine makes this procedure simple, convenient, and cost-effective.
A Stereoselective Three-Component Reaction: KAl(SO<sub>4</sub>)<sub>2</sub>·12H<sub>2</sub>O, an Efficient and Reusable Catalyst for the One-Pot Synthesis of <i>cis-</i>Isoquinolonic Acids
作者:Javad Azizian、Ali A. Mohammadi、Ali R. Karimi、Mohammad R. Mohammadizadeh
DOI:10.1021/jo049138g
日期:2005.1.1
KAl(SO4)2·12H2O is found to catalyze efficiently the stereoselective one-potthree-component cyclocondensation of homophthalic anhydride, aldehydes, and amines under mild conditions to afford the corresponding cis-isoquinolonic acids in good yields.
A stereoselective three-component reaction: One-pot synthesis of<i>cis</i>-isoquinolonic acids catalyzed by silica sulfuric acid under mild and heterogeneous conditions
作者:Javad Azizian、Ali A. Mohammadi、Ebrahim Soleimani、Ali R. Karimi、Mohammad R. Mohammadizadeh
DOI:10.1002/jhet.5570430129
日期:2006.1
A mild and stereoselective three-component one-step synthesis of cis-isoquinolonic acid using silica sulfuric acid as a heterogeneous catalyst from an aldehyde, amine and homophthalic anhydride in acetonitrile is described. This new method produces pure products in high yields (81-91%).
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 -