[CH3:1][O:2][C:3]1[CH:8]=[CH:7][N:6]=[C:5]([CH:9]=[CH:10][C:11]([O:13][CH3:14])=[O:12])[CH:4]=1>CO.[Pd]>[CH3:1][O:2][C:3]1[CH:8]=[CH:7][N:6]=[C:5]([CH2:9][CH2:10][C:11]([O:13][CH3:14])=[O:12])[CH:4]=143.1 g of methyl 3-(4-methoxypyridin-2-yl)acrylate (starting material A3) in 600 ml of methanol are hydrogenated over 3.0 g of 10% strength Pd/C until the starting material has disappeared (TLC). The catalyst is filtered off, and the mixture is then concentrated and dried under high vacuum. This gives 41.95 g of the title compound as a light-yellow oil. The mass spectrum shows the molecular peak MH+ at 196 Da.
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