反应详情

This compound was prepared from Step 2 intermediate (10 g, 34.234 mmol), 4-cyanophenylboronic acid (6.5 g, 44.235 mmol), Pd[(C6H5)3P]4 (1.62 g, 1.401 mmol) and Na2CO3 (21.7 g, 2.051 mmol) in a mixture of toluene (250 ml), ethanol (150 ml) and water (100 ml) according to the procedure described in Intermediate 3, Step 3 to afford a crude product which was purified by silica gel column chromatography using 10% ethyl acetate in chloroform to give 5 g of the product as a light yellow solid; 1H NMR (300 MHz, DMSO-d6) δ 2.19 (s, 3H), 7.53 (d, J=7.8 Hz, 3H), 7.88 (d, J=7.8 Hz, 2H) 8.02 (d, J=4.8 Hz, 1H); ESI-MS (m/z) 265.31 (M−H)−.

1. customto afford a crude product which
2. customwas purified by silica gel column chromatography