Imidazol-1-yl-acetic acid as a novel green bifunctional organocatalyst for the synthesis of 1, 8-dioxooctahydroxanthenes under solvent-free conditions

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Imidazol-1-yl-acetic acid as a novel green bifunctional organocatalyst for the synthesis of 1, 8-dioxooctahydroxanthenes under solvent-free conditions

Simin Nazari , Mosadegh Keshavarz , Bahador Karami , Nasir Iravani , Masoumeh Vafaee-Nezhad

Citation: Simin Nazari, Mosadegh Keshavarz, Bahador Karami, Nasir Iravani, Masoumeh Vafaee-Nezhad. Imidazol-1-yl-acetic acid as a novel green bifunctional organocatalyst for the synthesis of 1, 8-dioxooctahydroxanthenes under solvent-free conditions[J]. Chinese Chemical Letters, 2014, 25(2): 317-320. shu

shu

Imidazol-1-yl-acetic acid as a novel green bifunctional organocatalyst for the synthesis of 1, 8-dioxooctahydroxanthenes under solvent-free conditions

通讯作者: Mosadegh Keshavarz,

摘要: Imidazol-1-yl-acetic acid is introduced as a new, efficient and recyclable green bifunctional organocatalyst for the synthesis of 1,8-dioxooctahydroxanthenes under solvent-free conditions. This catalyst is water soluble and can be separated from the products by simple filtration. The filtrate can be evaporated to dryness and recrystallized from cool methanol to give the recovered catalyst. This organocatalyst was used for the synthesis of 1,8-dioxooctahydroxanthenes under solvent-free conditions and recycled up to 8 consecutive runs without any losing of its efficiency.

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English

Imidazol-1-yl-acetic acid as a novel green bifunctional organocatalyst for the synthesis of 1, 8-dioxooctahydroxanthenes under solvent-free conditions

1.
a Department of Chemistry, Sousangerd Branch, Islamic Azad University, Sousangerd 44181-6189, Iran;
2.
b Department of Chemistry, Yasouj University, Yasouj 75918-74831, Iran;
3.
c Department of Chemistry, Gachsaran Branch, Islamic Azad University, Gachsaran 75818-63876, Iran

Corresponding author: Mosadegh Keshavarz,

Received Date: 19 July 2013

Abstract: Imidazol-1-yl-acetic acid is introduced as a new, efficient and recyclable green bifunctional organocatalyst for the synthesis of 1,8-dioxooctahydroxanthenes under solvent-free conditions. This catalyst is water soluble and can be separated from the products by simple filtration. The filtrate can be evaporated to dryness and recrystallized from cool methanol to give the recovered catalyst. This organocatalyst was used for the synthesis of 1,8-dioxooctahydroxanthenes under solvent-free conditions and recycled up to 8 consecutive runs without any losing of its efficiency.

Key words:

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