With the rapid development and complex challenges of chemical substances, new drug synthesis pathways are usually the most effective.4295-99-2,4-Cyanotetrahydro-4H-pyran,as a common compound, the synthetic route is as follows.
In a 30 ml glass flask equipped with a stirrer, a thermometer and a dropping funnel, 1.0 g (9.0 mmol) of 4-cyanotetrahydropyran and 5 ml of dry tetrahydrofuran were added, and the liquid temperature was maintained at 0 to 5C.,10.8 ml (10.8 mmol) of a 1.0 mol/l lithium bis (trimethylsilyl)amide in tetrahydrofuran solution was gently added dropwise, and the mixture was stirred at the same temperature for 1.5 hours. Then, 3.8 g (27 mmol) of iodomethane was added, the mixture was reacted at room temperature for 2 hours. After completion of the reaction, 15 mmol (15 mmol) of 1.0 mmol / l hydrochloric acid was added to the obtained reaction solution, under ice cooling, the reaction solution was concentrated. To the concentrate, 10 ml of a saturated aqueous sodium chloride solution was added, extracted twice with 30 ml of ethyl acetate, the extract was dried over anhydrous magnesium sulfate. After filtration, the concentrate was distilled under reduced pressur to obtain 0.98 g of 4-methyl-4-cyanotetrahydropyran (isolation yield: 87%) as light yellow liquid., 4295-99-2
4295-99-2 4-Cyanotetrahydro-4H-pyran 11815837, aTetrahydropyrans compound, is more and more widely used in various fields.
Reference£º
Patent; UBE INDUSTRIES LIMITED; NISHINO, SHIGEYOSHI; HIROTSU, KENJI; SHIMA, HIDEYOSHI; IWAMOTO, KEIJI; HARADA, TAKASHI; (13 pag.)JP5673729; (2015); B2;,
Tetrahydropyran – Wikipedia
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