Poly Phosphoric Acid Impregnated on Silica Gel (PPA-SiO2): A Versatile and Reusable Catalyst for the Synthesis of 1,2,4,5-Tetrasubstituted Imidazoles under Solvent-free and Microwave Irradiation Conditions

NASER MONTAZERI; KHALIL POURSHAMSIAN; MARJAN KHODDADI

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Poly Phosphoric Acid Impregnated on Silica Gel (PPA-SiO2): A Versatile and Reusable Catalyst for the Synthesis of 1,2,4,5-Tetrasubstituted Imidazoles under Solvent-free and Microwave Irradiation Conditions

机译：硅胶上浸渍的聚磷酸（PPA-SiO2）：一种在无溶剂和微波辐射条件下合成1,2,4,5-四取代的咪唑的通用且可重复使用的催化剂

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A remarkable acceleration in the synthesis of 1,2,4,5-tetrasubstituted imidazoles catalyzed by silica gel supported poly phosphoric acid in high yields under solvent-free and microwave irradiation conditions, with very short reaction time is described. This methodology offers momentous improvements over various options for the synthesis of 1,2,4,5-tetrasubstituted imidazoles with regard to yield of produces, simplicity in operation and green aspects by avoiding toxic catalysts and solvents.

机译：描述了在无溶剂和微波辐射条件下以硅胶为载体的多磷酸催化高产率合成1,2,4,5-四取代的咪唑的惊人进展，反应时间非常短。该方法相对于合成1,2,4,5-四取代的咪唑的各种选择提供了重大的改进，包括避免了有毒的催化剂和溶剂，从而在产物收率，操作简便性和绿色方面方面取得了进展。

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来源
《Oriental Journal of Chemistry: An International Research Journal of Pure & Applied Chemistry》 |2011年第3期|共5页
作者
NASER MONTAZERI; KHALIL POURSHAMSIAN; MARJAN KHODDADI;
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原文格式 PDF
正文语种 eng
中图分类化学;
关键词
Tetrasubstituted imidazole; PPA-SiO2; solvent-free conditions; Multi-component reaction; Microwave irradiation.;

机译：四取代咪唑;PPA-SiO2;无溶剂条件;多组分反应;微波辐射;

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1. Poly Phosphoric Acid Impregnated on Silica Gel (PPA-SiO2): A Versatile and Reusable Catalyst for the Synthesis of 1,2,4,5-Tetrasubstituted Imidazoles under Solvent-free and Microwave Irradiation Conditions [J] . NASER MONTAZERI, KHALIL POURSHAMSIAN, MARJAN KHODDADI Oriental Journal of Chemistry: An International Research Journal of Pure & Applied Chemistry . 2011,第3期

机译：硅胶上浸渍的聚磷酸（PPA-SiO2）：一种在无溶剂和微波辐射条件下合成1,2,4,5-四取代的咪唑的通用且可重复使用的催化剂
2. Trifluoroacetic Acid as an Efficient Catalyst for One-Pot, Four-Component Synthesis of 1,2,4,5-Tetrasubstituted Imidazoles Under Microwave-Assisted, Solvent-Free Conditions [J] . Mohammadizadeh MR, Hasaninejad A, Bahramzadeh M Synthetic Communications . 2009,第16a18期

机译：三氟乙酸在微波辅助，无溶剂条件下作为一锅四组分合成1,2,4,5-四取代的咪唑的高效催化剂
3. Silica Gel-Supported Poly Phosphoric Acid Catalyzed One-Pot Multi-Component Synthesis of 2,4,6-Triarylpyridines under Solvent-Free and Microwave Irradiation Conditions [J] . Naser Montazeri, Khalil Pourshamsian, Roya Kalantarian Asian Journal of Chemistry: An International Quarterly Research Journal of Chemistry . 2012,第8期

机译：硅胶负载的聚磷酸在无溶剂和微波辐射条件下催化2,4,6-三芳基吡啶的一锅多组分合成
4. Silica gel-mediated hydrohalogenation of alkenes using hydrohalogenic acids under solvent-free conditions [C] . Kiyoshi Tanemura 日本化学会春季年会講演予稿集 . 2018

机译：在无溶剂条件下使用氢卤代酸硅胶介导的烯烃的含水氢化物
5. Application of microwave irradiation and solid acid catalysts in environmental organic chemistry. Synthesis and reactivity of heterocycles. [D] . Vazquez Fernandez-Pacheco, Ester. 2000

机译：微波辐射和固体酸催化剂在环境有机化学中的应用。杂环的合成和反应性。
6. Silica gel Catalyzed Synthesis of Quinophthalone Pigments Under Solvent-Free Conditions Using Microwave Irradiation [O] . Hossein Loghmani-Khouzani, Majid M. Sadeghi, J. Safari 2002

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7. Synthesis, characterization and catalytic application of silica supported tin oxide nanoparticles for synthesis of 2,4,5-tri and 1,2,4,5-tetrasubstituted imidazoles under solvent-free conditions [O] . Ashok V. Borhade, Dipak R. Tope, Sandip G. Gite 2017

机译：二氧化硅负载氧化锡纳米粒子的合成，表征和催化应用，用于在无溶剂条件下合成2,4,5-三和1,2,4,5-四取代咪唑

Poly Phosphoric Acid Impregnated on Silica Gel (PPA-SiO2): A Versatile and Reusable Catalyst for the Synthesis of 1,2,4,5-Tetrasubstituted Imidazoles under Solvent-free and Microwave Irradiation Conditions

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