Potassium Carbonate → Methyl 6-(N-2-picolylaminomethyl)nicotinate

Temperatur

70 °C

Commercially available methyl 6-methylnicotinate (2.5116 g) was dissolved in chloroform (50 ml), and N-bromosuccinimide (3.5682 g) and azoisobutylonitrile (290.4 mg) were added to the solution. The mixture was stirred for 22 hours at 70° C. After the reaction, the solvent was removed by distillation. The residue was purified by silica gel column chromatography (100 g, hexane/ethyl acetate=4/1) to obtain a crude product (1.0883 g) as a pale yellow solid. 280.7 mg of the solid (280.7 mg) was dissolved in DMF (5.6 ml), and potassium carbonate (168.5 mg) and 2-picolylamine (0.370 ml) were added. The mixture was stirred for 12 hours at room temperature. After the reaction, the solvent was removed by distillation. The residue was dissolved in chloroform, washed with distilled water, and dried over anhydrous sodium sulfate. The solvent was removed by distillation, and then the residue was purified by silica gel column chromatography (25 g, chloroform/methanol 25/1) to obtain the title compound (298.3 mg) as a pale yellow oil.

1. customAfter the reaction
2. customthe solvent was removed by distillation
3. customThe residue was purified by silica gel column chromatography (100 g, hexane/ethyl acetate=4/1)
4. customto obtain a crude product (1.0883 g) as a pale yellow solid
5. stirringThe mixture was stirred for 12 hours at room temperature
6. customAfter the reaction
7. customthe solvent was removed by distillation
8. dissolutionThe residue was dissolved in chloroform
9. washwashed with distilled water
10. dry with materialdried over anhydrous sodium sulfate
11. customThe solvent was removed by distillation
12. customthe residue was purified by silica gel column chromatography (25 g, chloroform/methanol 25/1)

ORD-Eintrag

ord-d50513840ecb42d3af2d9a84c664dac4

Quelldatensatz

uspto-grants-2006_08

DOI

10.6084/m9.figshare.5104873.v1

Patentnummer

US07098215B2