2-Chloroethyl isocyanate → N1-Cyclopropyl-5-((2-(((2-chloroethylamino)carbonyl)amino)-4-pyridyl)oxy)-1H-1-indolecarboxamide
Reaction equation
[CH:1]1([NH:4][C:5]([N:7]2[C:15]3[C:10](=[CH:11][C:12]([O:16][C:17]4[CH:22]=[CH:21][N:20]=[C:19]([NH2:23])[CH:18]=4)=[CH:13][CH:14]=3)[CH:9]=[CH:8]2)=[O:6])[CH2:3][CH2:2]1.[Cl:24][CH2:25][CH2:26][N:27]=[C:28]=[O:29]>O1CCCC1>[CH:1]1([NH:4][C:5]([N:7]2[C:15]3[C:10](=[CH:11][C:12]([O:16][C:17]4[CH:22]=[CH:21][N:20]=[C:19]([NH:23][C:28]([NH:27][CH2:26][CH2:25][Cl:24])=[O:29])[CH:18]=4)=[CH:13][CH:14]=3)[CH:9]=[CH:8]2)=[O:6])[CH2:3][CH2:2]1Participants
4
Reactant 2
Product 1
Reagents, catalysts & solvents 1
Procedure
N1-cyclopropyl-5-[(2-amino-4-pyridyl)oxy]-1H-1-indolecarboxamide (400 mg), 2-chloroethyl isocyanate (150 mg) and tetrahydrofuran (5 ml) were stirred at 80° C. for 1.5 hours. The mixture was returned to room temperature, silica gel was added, and the solvent was distilled off under reduced pressure. The silica gel was charged into a dry column packed with silica gel, and purification was performed by column chromatography (hexane:ethyl acetate=1:1, followed by ethyl acetate) to obtain 280 mg of a colorless powder.