反应详情

Example 15(b) was prepared from 6-methoxy-2-(1-methylethyl)benzofuran 15a (263 mg, 1.36 mmole) by acylation with oxalyl chloride in the presence of AlCl3, followed by treatment with methylamine in a manner as previously described for example 1c to give 200 mg (60%) of an off-white solid. 1H NMR (DMSO-d6) δ7.83 (1H, d, J=4.8 Hz), 7.56 (1H, d, J=8.8 Hz), 7.20 (1H, d, J=2.3 Hz), 6.89 (1H, dd, J=2.3, 8.8 Hz), 3.78 (3H, s), 3.68-3.61 (1H, m), 2.78 (3H, d, J=4.8 Hz), 1.26 (6H, d, J=6.8 Hz).