反应详情

2-Ethyl-7-methyl-3 (2'-(N-triphenylmethyltetrazol-5-yl)biphen-4-yl)methyl-3H-imidazo[4,5-b]pyridine was prepared according to the procedure described in Part A of Example 7, from 2-ethyl-7-methylimidazo[4,5-b]pyridine (0.5 g, 3.11 mmol), N-triphenylmethyl-5-(4'-bromomethylbiphenyl-2-yl)tetrazole (1.82 g, 3.26 mmol) and NaH (3.12 mmol). The crude product (1.9 g, foam) was purified by flash chromatography on silica-gel using EtOAc-hexanees (1:1.5) to give the desired product as a white solid (0.95 g, 47.5 %). 1H NMR (300 MHz, CDCl3): 8.2 (d, 1H, J=5 Hz), 7.9 (d, 1H, J=8 Hz), 6.80-7.55 (m, 23H), 5.4 (s, 2H), 2.58-2.85 (m, 5H), 1.25 (t, 3H, J=7.8 Hz).

1. customThe crude product (1.9 g, foam) was purified by flash chromatography on silica-gel