130723-13-6, In the chemical reaction process, reaction time, type of solvent, can easily affect the result of the reaction, thereby determining the yield and properties of the reaction product. An updated downstream synthesis route of 130723-13-6 as follows.
The 4-hydroxy-4-[3-(naphth-2-ylthio)-5-trifluoromethylphenyl]tetrahydropyran used as a starting material was obtained as follows: Sodium hydride (60% w/w dispersion in mineral oil; 0.5 g) was added portionwise to a mixture of 2-naphthalenethiol (1.42 g) and DMA (30 ml) and the mixture was stirred at ambient temperature for 1 hour. A solution of 1-bromo-3-fluoro-5-trifluoromethylbenzene (2.43 g) in DMA (10 ml) was added and the mixture was stirred at ambient temperature for 16 hours. The mixture was partitioned between ethyl acetate and water. The organic layer was washed with brine (50 ml), dried (MgSO4) and evaporated. The residue was purified by column chromatography using hexane as eluent. There was thus obtained 3-bromo-5-trifluoromethylphenyl 2-naphthyl sulphide (1.37 g, 40%), as an oil. A solution of the product so obtained in THF (10 ml) was cooled to -60 C. and n-butyl-lithium (1.6M in hexane; 2.3 ml) was added dropwise.
At the same time, in my other blogs, there are other synthetic methods of this type of compound, 130723-13-6, and friends who are interested can also refer to it.
Reference:
Patent; Imperial Chemical Industries; ICI Pharma; US5208259; (1993); A;,
Bromide – Wikipedia,
bromide – Wiktionary