Supplementary Materialsmolecules-22-01979-s001. 121.056, 110.707, 60.339; HRMS-ESI ((6b). Attained in 23.6% yield, yellow solid. m.p. 183C184 C. 1H-NMR (400 MHz, DMSO-(ppm): 4.30 (d, 1H, = 12.9 Hz), 4.37 (d, 1H, = 12.9 Hz), 6.83 (d, 1H, = 7.8 Hz), 6.96 (t, 1H, = 7.6 Hz), 7.14C7.40 (m, 5H), 7.47 (s, 1H), 7.66 (d, 1H, = 7.6… Continue reading Supplementary Materialsmolecules-22-01979-s001. 121.056, 110.707, 60.339; HRMS-ESI ((6b). Attained in 23.6% yield,