Fig. 1From: Efficient synthesis of 3-alkyl-2-(-1H-1,2,3-triazolyl)methyl)thio)-2,3-dihydroquinazolin-4(1H)-one derivative via multistep synthesis approach by novel Cu@Py-Oxa@SPION catalysta FTIR; b VSM results of Cu@Py-Oxa@SPION catalyst. In the FTIR spectra, the red line (denoted a) shows SiO2 encapsulated SPION the black line (denoted b) shows SiO2 encapsulated SPION and the blue line (denoted c) shows Cu@Py-Oxa@SPION catalystBack to article page