1H nuclear magnetic resonance spectroscopy (1H NMR) ()

dataset for 1H nuclear magnetic resonance spectroscopy (1H NMR) 1H NMR (400 MHz, Chloroform-d [7.27 ppm], ppm) δ = 8.13 (s, 1H, L), 7.23–7.10 (m, 23H, L+DPEphos), 6.98–6.94 (m, 2H, DPEphos), 6.91–6.84 (m, 4H, DPEphos), 6.79 (d, J = 3.5 Hz, 1H, L), 6.75–6.69 (m, 4H, L+DPEphos), 6.27 (d, J = 4.0 Hz, 1H, L). Impurities: around 3% of impurities due to DCM (5.30 ppm), water (1.52 ppm), n-pentane (1.30 and 0.89 ppm) and unknown by-products (2.18 and 0.07 ppm). The yield was adjusted accordingly.