TUNGSTATE SULFURIC ACID AS A RECYCLABLE SOLID ACID CATALYST FOR THE SYNTHESIS OF HETEROCYCLIC NITRONES

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BANAN ALIREZA; VALIZADEH HASSAN; MOGHIMI ABOLGHASEM; HOSSEINI SEYED AYOUB; KESHIPOUR SAJJAD

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Seminar Paper

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Seminar: IRANIAN SEMINAR OF ORGANIC CHEMISTRY
Year:2014 | Issue:22

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Title

TUNGSTATE SULFURIC ACID AS A RECYCLABLE SOLID ACID CATALYST FOR THE SYNTHESIS OF HETEROCYCLIC NITRONES

Author(s)

Keywords

NITRONE

DIAMINO GLYOXIME

TUNGSTATE SULFURIC ACID

Abstract

NITRONES AS THE 1, 3-DIPOLAR SPECIES ARE VALUABLE INTERMEDIATES IN ORGANIC SYNTHESIS. THERMAL CYCLOADDITION REACTIONS OF NITRONES WITH MULTIPLE BOND SYSTEMS ARE EFFICIENT STRATEGY FOR PROVIDING VARIOUS HETEROCYCLIC FIVE-MEMBERED RING SYSTEMS.TUNGSTATE SULFURIC ACID (TSA) AS AN EFFICIENT AND REUSABLE CATALYST WAS APPLIED FOR THE SYNTHESIS OF HETROCYCLIC NITRONES THROUGH REACTION OF BENZALDEHYDE DERIVATIVES WITH DIAMINO GLYOXIME UNDER MILD REACTION CONDITIONS. THE EFFECTS OF SUBSTITUENTS ON THE REACTIVITY OF THE BENZALDEHYDE WITH DIAMINO GLYOXIME WERE INVESTIGATED. THE PRODUCTS WERE CHARACTERIZED BY 1H NMR, 13C NMR AND IR SPECTROSCOPES. THE EFFECT OF TEMPERATURE ON STABILITY OF THE PRODUCTS STRUCTURAL ISOMERS HAS BEEN STUDIED BY NMR AS WELL. THE RESULTS SHOWED THAT, ONLY ONE PRODUCT WAS OBSERVED AT HIGH TEMPERATURES. THE ADVANTAGES OF THIS METHOD ARE HIGH YIELDS, EASE OF PRODUCT ISOLATION AND RECYCLABILITY OF CATALYST FOR A NUMBER OF TIMES WITHOUT SIGNIFICANT LOSS OF ACTIVITY.

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APA: Copy

BANAN, ALIREZA, VALIZADEH, HASSAN, MOGHIMI, ABOLGHASEM, HOSSEINI, SEYED AYOUB, & KESHIPOUR, SAJJAD. (2014). TUNGSTATE SULFURIC ACID AS A RECYCLABLE SOLID ACID CATALYST FOR THE SYNTHESIS OF HETEROCYCLIC NITRONES. IRANIAN SEMINAR OF ORGANIC CHEMISTRY. SID. https://sid.ir/paper/910604/en

Vancouver: Copy

BANAN ALIREZA, VALIZADEH HASSAN, MOGHIMI ABOLGHASEM, HOSSEINI SEYED AYOUB, KESHIPOUR SAJJAD. TUNGSTATE SULFURIC ACID AS A RECYCLABLE SOLID ACID CATALYST FOR THE SYNTHESIS OF HETEROCYCLIC NITRONES. 2014. Available from: https://sid.ir/paper/910604/en

IEEE: Copy

ALIREZA BANAN, HASSAN VALIZADEH, ABOLGHASEM MOGHIMI, SEYED AYOUB HOSSEINI, and SAJJAD KESHIPOUR, “TUNGSTATE SULFURIC ACID AS A RECYCLABLE SOLID ACID CATALYST FOR THE SYNTHESIS OF HETEROCYCLIC NITRONES,” presented at the IRANIAN SEMINAR OF ORGANIC CHEMISTRY. 2014, [Online]. Available: https://sid.ir/paper/910604/en

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