4-bromo-5-methoxy-N-((2-(methylthio)benzo[d]thiazol-6-yl)methyl)-2-nitroaniline → 5-chloro-N2-((2-(methylthio)benzo[d]thiazol-6-yl)methyl)pyridine-2,3-diamine
反応式
[Cl:1][C:2]1[CH:3]=[C:4]([N+:21]([O-])=O)[C:5]([NH:8][CH2:9][C:10]2[CH:20]=[CH:19][C:13]3[N:14]=[C:15]([S:17][CH3:18])[S:16][C:12]=3[CH:11]=2)=[N:6][CH:7]=1.BrC1C(OC)=CC(NCC2C=CC3N=C(SC)SC=3C=2)=C([N+]([O-])=O)C=1>>[Cl:1][C:2]1[CH:3]=[C:4]([NH2:21])[C:5]([NH:8][CH2:9][C:10]2[CH:20]=[CH:19][C:13]3[N:14]=[C:15]([S:17][CH3:18])[S:16][C:12]=3[CH:11]=2)=[N:6][CH:7]=1参加物
3
実験手順
Crude 5-chloro-N2-((2-(methylthio)benzo[d]thiazol-6-yl)methyl)pyridine-2,3-diamine was synthesized as a yellow solid using a procedure analogous to that describe in Step 2 of Example 41, substituting 5-chloro-N-((2-(methylthio)benzo[d]thiazol-6-yl)methyl)-3-nitropyridin-2-amine from Step 1 of this Example for 4-bromo-5-methoxy-N-((2-(methylthio)benzo[d]thiazol-6-yl)methyl)-2-nitroaniline used in Example 41. The residue was purified by silica gel flash chromatography eluting with a gradient of 100% hexanes to 100% EtOAc to afford 5-chloro-N2-((2-(methylthio)benzo[d]thiazol-6-yl)methyl)pyridine-2,3-diamine (75 mg, 65%). LCMS (ESI) m/z 337 (M+H)+.