反应详情

Using Method L, 2-(3-acetamidophenyl)-6-chloropyrazine (4a) (60 mg, 0.24 mmol), 4-(morpholinosulfonyl) aniline (84.8 mg, 0.35 mmol), Pd(0)2 dba3 (9 mg, 0.01 mmol), BINAP (50 mg, 0.04 mmol), sodium tert-butoxide (33 mg, 0.34 mmol) and toluene (5 mL) were reacted at 85° C. and kept for 16 hours. The same workup as for Method L followed by column chromatography afforded 34 mg of title compound. Yield: 31.2%. 1H NMR (250 MHz, DMSO-d6) δ 2.11 (s, 3 H), 2.86-2.89 (m, 4 H), 3.62-3.65 (m, 4 H), 7.45 (t, 1 H, 7.8 Hz), 7.54 (d, 1 H, 8.1 Hz), 7.73-7.80 (m, 3 H), 8.14 (d, 2 H, 8.9 Hz), 8.28 (s, 1 H), 8.57 (bs, 1 H), 8.61 (s, 1 H), 10.13 (s, 1 H), 10.18 (s, 1 H); 13C NMR (62.9 MHZ, DMSO-d6) δ 24.19, 45.90, 65.28, 117.09, 117.50, 120.06, 121.09, 125.43, 129.22, 129.33, 131.54, 134.02, 136.56, 140.07, 145.24, 147.83, 150.66, 168.57; m/z 454.2 [(M+H)+, calcd for C22H23N5O4S 453.2].

1. customwere reacted at 85° C.