Sonochemical synthesis of methyl-4-(hetero)arylmethylene isoxazole-5(4H)-ones using SnII-montmorillonite
| Autor: | Majid Ahmadzadeh, Zohre Zarnegar, Javad Safari |
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| Jazyk: | angličtina |
| Rok vydání: | 2018 |
| Předmět: | |
| Zdroj: | Green Chemistry Letters and Reviews, Vol 11, Iss 2, Pp 78-85 (2018) |
| Druh dokumentu: | article |
| ISSN: | 1751-8253 1751-7192 17518253 |
| DOI: | 10.1080/17518253.2018.1434564 |
| Popis: | Tin exchanged montmorillonite K10 (SnII-Mont K10) was prepared by ion exchange between SnCl2 and montmorillonite K10. The SnII-Mont K10 was characterized by X-ray diffraction, scanning electron microscope and energy-dispersive X-ray spectroscopy. The synthesized SnII-Mont K10 was used as a recoverable solid catalyst for synthesis of 3-methyl-4-arylmethylene isoxazole-5(4H)-ones via one-pot multicomponent cyclocondensation of hydroxylamine hydrochloride, ethyl acetoacetate and benzaldehyde derivatives in water under ultrasound irradiations. The yields of products were obtained 87–96%. The remarkable advantages of this method are a low-cost and eco-friendliness catalyst, rapid completion of the reactions, and avoidance of using organic solvents, excellent yield and mild conditions. |
| Databáze: | Directory of Open Access Journals |
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