Reference of 62002-31-7, Researchers who often do experiments know that organic synthesis is a process of preparing more complex target molecules from simple raw materials through one or more chemical reactions. Generally, it requires fewer steps,and cheap raw materials. 62002-31-7, name is 4,5,6,7-Tetrahydro-3H-imidazo[4,5-c]pyridine dihydrochloride. A new synthetic method of this compound is introduced below.
At 0 C., EDC (0.45 g, 2.4 mmol) was added to a solution of 3-(4-tert-butylphenyl)acrylic acid (0.48 g, 2.4 mmol) and 1-hydroxy-7-azabenzotriazole (0.32 g, 2.4 mmol) in dichloromethane (30 mL). The reaction mixture was stirred for 20 min at 0 C. 4,5,6,7-Tetrahydroimidazo[4,5-c]pyridine dihydrochloride (0.50 g, 2.3 mmol) was added. Ethyldiisopropylamine (0.40 mL, 2.3 mmol) was added. The reaction mixture was stirred for 16 h at room temperature. It was diluted with ethyl acetate (100 mL) and washed with a saturated aqueous solution of sodium hydrogencarbonate (100 mL). The aqueous phase was extracted with ethyl acetate (2*60 mL). The combined organic layers were dried over magnesium sulfate. The solvent was removed in vacuo. The crude product was purified by flash chromatography on silica (40 g), using dichloromethane/methanol/25% aqueous ammonia (100:10:1) as eluent, to give 119 mg of the title compound. 1H NMR (CDCl3): delta 1.32 (s, 9H); 2.75 (br, 2H); 3.95 (br, 2H); 4.75 (br, 2H); 6.95 (d, 1H); 7.35-7.55 (m, 5H); 7.65 (d, 1H).
At the same time, in my other blogs, there are other synthetic methods of this type of compound,62002-31-7, 4,5,6,7-Tetrahydro-3H-imidazo[4,5-c]pyridine dihydrochloride, and friends who are interested can also refer to it.
Reference:
Patent; Novo Nordisk A/S; US6908926; (2005); B1;,
Pyridine – Wikipedia,
Pyridine | C5H5N – PubChem