For C11H17N3O3: 239.27. Found: 239.8 (M+).3-(two,5-Dimethylfuran-3-yl)-
For C11H17N3O3: 239.27. Found: 239.eight (M+).3-(2,5-Dimethylfuran-3-yl)-1H-pyrazol-5(4H)-one (17)Purified by recrystallisation applying ethanol (white solid), m.p: 204.0 to 205.0 , 1H NMR (400 MHz, d6-DMSO) H: 5.67 (s, 1H, proton at C-4),…