Iranian chemical communication 2423-4958 3 Issue 2, pp. 72-147, Serial No. 7 2015 04 01 Microwave assisted green synthesis of α, ά- bis (substituted- benzylidene) alkanones 78 85 950 EN Mohammad Ali Nasseri University of Birjand Ali Allahresani Department of Chemistry, College of Sciences, University of Birjand Batol Zakeri Nasab Department of Chemistry, College of Sciences, University of Birjand Journal Article 2014 07 16 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. https://icc.journals.pnu.ac.ir/article_950_42919c08339e12b81fe1aa5e97db66e9.pdf