Three-component reaction between isatoic anhydride, amine and methyl-substituted furylacrylaldehydes: crystal structures of 3-benzyl-2-[(<i>E</i>)-2-(5-methylfuran-2-yl)vinyl]-2,3-dihydroquinazolin-4(1<i>H</i>)-one, 3-benzyl-2-[(<i>E</i>)-2-(furan-2-yl)-1-methylvinyl]-2,3-dihydroquinazolin-4(1<i>H</i>)-one and 3-(furan-2-ylmethyl)-2-[(<i>E</i>)-2-(furan-2-yl)-1-methylvinyl]-2,3-dihydroquinazolin-4(1<i>H</i>)-one
Acta crystallographica. Section E, Crystallographic communications