With the rapid development and complex challenges of chemical substances, new drug synthesis pathways are usually the most effective.1768-64-5,4-Chlorotetrahydropyran,as a common compound, the synthetic route is as follows.
Example 1 Preparation of 1-(4-tetrahydropyranyl)but-1-en-3-one 5.0 g of magnesium were introduced into 100 ml of anhydrous tetrahydrofuran. 25 g of 4-chlorotetrahydropyran were added dropwise under reflux under a nitrogen atmosphere, and the mixture was refluxed for 2 hours. A solution of 23.5 g of 1-(dimethylamino)but-1-en-3-one in 20 ml of anhydrous tetrahydrofuran was subsequently added dropwise to the reaction mixture, cooled to from 0 to 5 C., at a rate such that the internal temperature did not exceed 50 C., and the mixture was stirred at room temperature for a further 2 hours. For work-up, the reaction mixture was poured into a mixture of ice and dilute HCl, and extracted 3 times with 200 ml of chloroform, and the extracts were washed with saturated sodium chloride solution and dried over MgSO4. Removal of the solvent gave 24.0 g (75%) of 1-(4-tetrahydropyranyl)but-1-en-3-one having a boiling point of 117 C./10 mmHg.
1768-64-5, The synthetic route of 1768-64-5 has been constantly updated, and we look forward to future research findings.
Reference£º
Patent; BASF Aktiengesellschaft; US5221753; (1993); A;,
Tetrahydropyran – Wikipedia
Tetrahydropyran – an overview | ScienceDirect Topics