With the rapid development and complex challenges of chemical substances, new drug synthesis pathways are usually the most effective.624734-17-4,3-Methoxydihydro-2H-pyran-4(3H)-one,as a common compound, the synthetic route is as follows.
624734-17-4, 3-Methoxy-tetrahydro-pyran-4-one* (500 mg, 3.84 mmol), benzylamine (0.42 ml, 3.84 mmol) and Raney-Nickel (100 mg) were suspended in 20 ml of dry ethanol and the reaction mixture was stirred under hydrogen atmosphere (4.5 bar) for 3 days. The reaction mixture was filtered on a celite pad and the organic phase was concentrated under vacuum.The crude product obtained was dissolved in 10 ml of methanol, loaded on a SCX cartridge (lOg) and eluted with a 2M solution of ammonia in methanol. The solvent was concentrated under vacuum and the crude product obtained was purified by flash chromatography (Isolute cartridge lOg; eluent: dichloromethane/methano 1=96/4%). 163 mg (0.73 mmol) of the desired product were obtained as cis racemate (relative configuration assigned by NMR).
The synthetic route of 624734-17-4 has been constantly updated, and we look forward to future research findings.
Reference£º
Patent; BOEHRINGER INGELHEIM INTERNATIONAL GMBH; EBEL, Heiner; FRATTINI, Sara; GERLACH, Kai; GIOVANNINI, Riccardo; HOENKE, Christoph; SANTAGOSTINO, Marco; SCHEUERER, Stefan; TRIESELMANN, Thomas; WO2011/73155; (2011); A1;,
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