2-Chloro-5-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)pyridine → 7-(6-Chloropyridin-3-yl)-1-(2,5-dichlorobenzyl)-1,2,3,4-tetrahydropyrido[2,3-b]pyrazine
反応式
[Cl:1][C:2]1[CH:19]=[CH:18][C:17]([Cl:20])=[CH:16][C:3]=1[CH2:4][N:5]1[CH2:10][CH2:9][NH:8][C:7]2[N:11]=[CH:12][C:13](I)=[CH:14][C:6]1=2.[Cl:21][C:22]1[CH:27]=[CH:26][C:25](B2OC(C)(C)C(C)(C)O2)=[CH:24][N:23]=1>>[Cl:21][C:22]1[N:23]=[CH:24][C:25]([C:13]2[CH:12]=[N:11][C:7]3[NH:8][CH2:9][CH2:10][N:5]([CH2:4][C:3]4[CH:16]=[C:17]([Cl:20])[CH:18]=[CH:19][C:2]=4[Cl:1])[C:6]=3[CH:14]=2)=[CH:26][CH:27]=1参加物
3
実験手順
1-(2,5-Dichlorobenzyl)-7-iodo-1,2,3,4-tetrahydropyrido[2,3-b]pyrazine (115 mg) was reacted with 2-chloro-5-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)pyridine as in General Procedure 4B to give the title compound as a yellow solid (54% yield). M.p.=205° C., LCMS: m/z=405.57 (M+H+), 1H-NMR (CDCl3, 400 MHz) δ 3.50 (2H, t, J=4.8 Hz), 3.67 (2H, m), 4.49 (2H, s), 5.10 (1H, bs), 6.52 (1H, s), 7.21 (1H, dd, J=8.3, 2.3 Hz), 7.29 (2H, m), 7.35 (1H, d, J=8.3 Hz), 7.55 (2H, m), 8.36 (1H, d, J=2.5 Hz).