624734-17-4, 3-Methoxydihydro-2H-pyran-4(3H)-one is a Tetrahydropyrans compound, ?involved in a variety of chemical synthesis. Rlated chemical reaction is continuously updated
Intermediate 46b3-Methoxy-tetrahydro-pyran-4-one (1 g, 7.68 mmol), (R)-(+)-l-phenylethylamine (0.99 ml, 7.68 mmol) and Raney-Nickel (200 mg) in 10 ml dry ethanol were stirred under a hydrogen atmosphere (5 bar) for 15 days. The reaction mixture was diluted with 20 ml of methanol and 20 ml of tetrahydrofurane, stirred for 15 minutes, filtered on a celite pad and concentrated under vacuum. The crude product was loaded on a SCX cartridge (5Og). The cartridge was washed with methanol and the desired product was eluted with a 7 M solution of ammonia in methanol. The basic organic phase was concentrated under vacuum and the crude product obtained was purified by flash chromatography (dichloromethane/methanol= 98/2%) to obtain 710 mg (3.02 mmol) of the desired product as single stereoisomer (diastereoisomeric purity confirmed and relative cis stereochemistry assigned by NMR).
624734-17-4 3-Methoxydihydro-2H-pyran-4(3H)-one 23533610, aTetrahydropyrans compound, is more and more widely used in various.
Reference£º
Patent; BOEHRINGER INGELHEIM INTERNATIONAL GMBH; EBEL, Heiner; FRATTINI, Sara; GIOVANNINI, Riccardo; HOENKE, Christoph; TRIESELMANN, Thomas; TIELMANN, Patrick; SCHEUERER, Stefan; HOBBIE, Silke (Marie Katrin); WO2010/70032; (2010); A1;,
Tetrahydropyran – Wikipedia
Tetrahydropyran – an overview | ScienceDirect Topics