“…The compound was prepared from L4b (300 mg, 0.86 mmol) and isolated as an off-white powder, yield: 269 mg (0.59 mmol, 69%); 1 H NMR (600 MHz, DMSO-d 6 ): δ 8.48 (ddd, J H,H = 4.9, 1.8, 0.9 Hz, Py-H5, 1H), 7.86−7.68 (m, Py−H2−H3/BeIm-H4/H7, 3H), 7.47−7.36 (m, BeIm-H4/H7, 3H), 7.31 (ddd, J H,H = 7.6, 4.9, 1.2 Hz, Py-H4, 1H), 5.84 (s, Py-CH 2 , 2H), 4. 68 Conductometry. Conductivity measurements were performed using an Apera Instruments EC9500 conductivity meter.…”