Hydrogen chloride-ethyl acetate → 4-(2-(4-aminopiperidin-1-yl)ethyl)-6-methoxypyrido(2,3-b)pyrazin-3(4H)-one hydrochloride
Reaction equation
[CH3:1][O:2][C:3]1[CH:4]=[CH:5][C:6]2[N:11]=[CH:10][C:9](=[O:12])[N:8]([CH2:13][CH2:14][N:15]3[CH2:20][CH2:19][CH:18]([NH:21]C(=O)OC(C)(C)C)[CH2:17][CH2:16]3)[C:7]=2[N:29]=1.[ClH:30].C(OCC)(=O)C>C(OCC)(=O)C>[ClH:30].[NH2:21][CH:18]1[CH2:17][CH2:16][N:15]([CH2:14][CH2:13][N:8]2[C:9](=[O:12])[CH:10]=[N:11][C:6]3[CH:5]=[CH:4][C:3]([O:2][CH3:1])=[N:29][C:7]2=3)[CH2:20][CH2:19]1Participants
4
Reactant 2
Product 1
Reagents, catalysts & solvents 1
Procedure
To a suspension of 0.23 g of tert-butyl (1-(2-(6-methoxy-3-oxopyrido(2,3-b)pyrazin-4(3H)-yl)ethyl)piperidin-4-yl)carbamate in 3 mL of ethyl acetate, 4.0 mL of a 4.0 mol/L hydrogen chloride/ethyl acetate solution was added at room temperature. The mixture was stirred at the same temperature for 5 hours, and then left overnight. The solvent was distilled off under reduced pressure, diethyl ether was added to the resultant residue, and the solid was filtered off to obtain 0.23 g of 4-(2-(4-aminopiperidin-1-yl)ethyl)-6-methoxypyrido(2,3-b)pyrazin-3(4H)-one hydrochloride as a light brown solid.