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. 2022 Oct 11;12:17027. doi: 10.1038/s41598-022-21196-2

Table 2.

6-Amino-8-aryl-7-cyano-8H-[1,3]dioxolo-[4,5-g] chromenes synthesis in the presence of HPW@Fe3O4–Al2O3–CS–CG.

Entry Ar Product Time (min) Yield (%)a M. P. (Lit. mp)55 (°C)
1 C6H5 4a 15 97 208–210 (207)
2 3-NO2C6H4 4b 20 96 213–216 (212)
3 4-CH3C6H4 4c 20 95 207–210 (208)
4 4-CH3OC6H4 4d 25 96 195–197 (197)
5 4-ClC6H4 4e 12 97 203–205 (205)
6 3-BrC6H4 4f. 15 96 227–229 (227)