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Microwave assisted green synthesis of α, ά- bis (substituted- benzylidene) alkanones | ||
| Iranian chemical communication | ||
| مقاله 2، دوره 3، Issue 2, pp. 72-147, Serial No. 7، تیر 2015، صفحه 78-85 اصل مقاله (931.46 K) | ||
| نوع مقاله: Original Research Article | ||
| نویسندگان | ||
| Mohammad Ali Nasseri* 1؛ Ali Allahresani2؛ Batol Zakeri Nasab2 | ||
| 1University of Birjand | ||
| 2Department of Chemistry, College of Sciences, University of Birjand | ||
| چکیده | ||
| Microwave assisted green synthesis of α, ά- bis (substituted- benzylidene) alkanones by the crossed- aldol condensation reaction of substituted aryl aldehydes with ketones in the presence of catalytic amount of NbCl5 in good to excellent yields. This reaction is carried out under solvent-free conditions. The results showed that aldehydes bearing electron–donating substituent's on phenyl-ring favored the formation of product in good to excellent yields with reaction times ranging between 3 and 7 min. In addition, furfural, cinamaldehyde, thiophene-2-carbaldehyde and 5-methylthiophene-2-carbaldehyde were investigated in aldol reaction, and the results showed excellent yields. Also, the reactions were carried out at room & thermal (80 0C) conditions. The results showed that the yields are in accordance with the microwave irradiations, But the time is 1.5-5 h at room temperature and 15-45 min in thermal conditions. | ||
| کلیدواژهها | ||
| Niobium pentachloride؛ solvent-free؛ Aryl aldehyde؛ microwave irradiation | ||
| مراجع | ||
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