反应详情

Intermediate (4) (27.6 mg, 50 μmole, 1.0 eq) was dissolved in dichloromethane (250 μL), after which 2,6-di-t-butyl pyridine (36 μL, 160 μmole, 3.2 eq), silver triflate (38.5 mg, 150 μmole, 3.0 eq) and iodopentane (23 μL, 175 μmole, 3.5 eq) were added. After 45 minutes the reaction mixture was directly purified to give 23 mg of the title compound. 1H NMR (500 MHz, DMSO-d6): δ 8.45 (s, 2H), 8.15 (s, 1H), 7.36 (d, 2H), 7.24 (t, 2H), 7.17 (t, 1H), 4.39 (s, 2H), 3.30 (water), 3.23 (t, 2H), 3.01 (d, 2H), 2.92 (d, 2H), 2.48 (DMSO), 1.61 (m, 2H), 1.54 (m, 2H), 1.41 (m, 2H), 1.34-1.19 (m, 6H), 0.82 (t, 3H), 0.62 (m, 4H).

1. customAfter 45 minutes the reaction mixture was directly purified