反应详情

Compound 14 (1 g, 4.1 mmol), 1-bromo-3-chloropropane (9.7 g, 60 mmol) and K2CO3 (0.56 g, 4.09 mmol) were added to 50 mL CH3CN, and the solution was stirred for 48 h. The solvent was evaporated to dryness and the residue was purified on a silica gel TLC plate that was developed in 2% methanolic NH3 (7 M NH3 in methanol/98% CH2Cl2 yield the desired product as a pale yellow oil (55%). 1H NMR (CDCl3) δ 7.341 (d, 1H, Ar), 7.139 (dd, 1H, Ar), 7.029 (m, 1H, Ar), 6.995 (m, 1H, Ar), 3.592 (s, 2H, —CH2—), 3.539 (t, 2H, —CH2—), 3.167 (m, 2H, —CH2—), 2.583 (ddd, 2H, —CH2—), 2.519 (ddd, 2H, —CH2—), 1.900 (p, 2H, —CH2—), 1.425 (s, 9H, —C(CH3)3), 1.385 (s, 9H, —C(CH3)3). Mass Spec.=399.96 (M+H)+.

1. customThe solvent was evaporated to dryness
2. customthe residue was purified on a silica gel TLC plate that