ChemInform Abstract: Solvent-Free Synthesis of 1-Aryl-1H-1,2,3,4-tetrazoles Using FeCl3-SiO2Catalysis under Conventional and Ultrasound Irradiation Conditions.

ChemInform ◽  
2014 ◽  
Vol 45 (7) ◽  
pp. no-no
Author(s):  
Davood Habibi ◽  
Samaneh Mostafaee ◽  
Leila Mehrabi
Keyword(s):  
Ultrasound Irradiation ◽  
Solvent Free ◽  
Solvent Free Synthesis

scholarly journals The solvent-free synthesis of 1,4-dihydropyridines under ultrasound irradiation without catalyst

2008 ◽  
Vol 15 (5) ◽  
pp. 677-680 ◽  
Author(s):  
Shu-Xiang Wang ◽  
Zhi-Yan Li ◽  
Jin-Chao Zhang ◽  
Ji-Tai Li
Keyword(s):  
Ultrasound Irradiation ◽  
Solvent Free ◽  
Solvent Free Synthesis

scholarly journals Imidazolium supported iron-chloroglycine complex, a good turnover recyclable catalyst for the solvent free synthesis of 3, 4-dihydropyrimidin-2(1H)-ones – promoted by ultrasound irradiation

2019 ◽  
Vol 62 (3) ◽  
Author(s):  
Priya Ramasamy Shunmuga ◽  
Uma maheswari Govindhasamay ◽  
Deepa Manicam ◽  
Karthikeyan Parasuraman
Keyword(s):  
Catalytic Activity ◽  
Ultrasound Irradiation ◽  
Significant Loss ◽  
Solvent Free ◽  
Ecological Perspective ◽  
Turnover Number ◽  
High Turnover ◽  
Imidazolium Chloride ◽  
Isolation And Purification ◽  
Solvent Free Synthesis

Abstract. A novel large band gap 1-glycyl-3-methyl imidazolium chloride-iron (III) complex [[Gmim]Cl-Fe(III)] was found to be a heterogeneous catalyst for an efficient and solvent free synthesis of 3,4-dihydropyrimidin-2(1H)-ones by condensation of substituted aldehydes, ethyl acetoacetate and urea (or) thiourea with tremendous yields in high turnover number (4.1X102 to 18.8X102)  at ambient temperature using ultrasound irradiation as the activation mode of reaction. This operation formulates very interesting, ecological perspective due to simple reaction condition, isolation and purification of products. In addition, this methodology offers a competitive recyclability of the catalyst without a significant loss of its catalytic activity and could be readily reused, thus making this protocol more environmentally acceptable whilst no catalyst leaching was observed. Resumen. Se descubrió que un complejo novedoso de banda ancha 1-glicil-3-metilimidazolio cloruro de hierro (III) [[Gmim] Cl-Fe (III)] es un catalizador heterogéneo para una síntesis eficiente y libre de solventes de 3,4- dihidropirimidin-2 (1H) -ones por condensación de aldehídos sustituidos, acetoacetato de etilo y tiourea urea (o) con tremendos rendimientos en alto número de recambio (4.1X102 a 18.8X102) a temperatura ambiente mediante irradiación con ultrasonido como modo de activación de reacción. Esta operación formula una perspectiva ecológica muy interesante debido a la condición de reacción simple, el aislamiento y la purificación de los productos. Además, esta metodología ofrece una reciclabilidad competitiva del catalizador sin una pérdida significativa de su actividad catalítica y podría reutilizarse fácilmente, lo que hace que este protocolo sea más aceptable para el medio ambiente sin que se observe lixiviación del catalizador. 

scholarly journals Solvent free synthesis of 1,3-diaryl-2-propenones catalyzed by commercial acid-clays under ultrasound irradiation

2010 ◽  
Vol 17 (1) ◽  
pp. 246-249 ◽  
Author(s):  
Manef Chtourou ◽  
Rami Abdelhédi ◽  
Mohamed Hédi Frikha ◽  
Mahmoud Trabelsi
Keyword(s):  
Ultrasound Irradiation ◽  
Solvent Free ◽  
Solvent Free Synthesis

Green Synthesis of Hydantoins and Derivatives

2020 ◽  
Vol 17 (2) ◽  
pp. 176-184
Author(s):  
Lluvia Itzel López-López ◽  
Denisse de Loera ◽  
Ernesto Rivera-Avalos ◽  
Aidé Sáenz-Galindo
Keyword(s):  
Ionic Liquids ◽  
Green Chemistry ◽  
Green Synthesis ◽  
Bioactive Compounds ◽  
Solid Phase ◽  
Ultrasound Irradiation ◽  
Solvent Free ◽  
Pharmacological Properties ◽  
Solvent Free Synthesis

The hydantoin moiety is found in several bioactive compounds with important pharmacological properties such as antimicrobial, antifungal, anti-androgens, anticancer and the historical action anticonvulsant. Because of these reasons, the synthesis of these compounds and their derivatives is important to review considering the philosophy of the green chemistry. In this review, we present the actual importance in the green synthesis of hydantoins and their derivatives using green methods, such as microwave and ultrasound irradiation, ionic liquids, solid-phase and solvent-free synthesis. Finally, several green protocols reported have been discussed.

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