With the rapid development and complex challenges of chemical substances, new drug synthesis pathways are usually the most effective.116131-44-3,3-(Bromomethyl)tetrahydro-2H-pyran,as a common compound, the synthetic route is as follows.
a) 4.9 g (0.03 mole) of 6-amino-3,4-dihydro-2H-1,4-benzoxazin-3-one in 50 ml of dimethylformamide are initially taken, 0.79 g (0.033 mole) of sodium hydride is added at 5 C. and the mixture is stirred for 30 minutes at this temperature. Thereafter, 5.9 g (0.033 mole) of 3-bromomethyltetrahydropyran are added, stirring is continued for 3 hours at 60 C., 200 ml of water are added the mixture is extracted twice with 200 ml of methylene chloride, the extracts are dried and the solvent is evaporated under reduced pressure. 5 g (64%) of 4-(tetrahydropyran-4-ylmethyl)-6-amino-3,4-dihydro-2H-1,4-benzoxazin-3-one (oil) are obtained.
116131-44-3, The synthetic route of 116131-44-3 has been constantly updated, and we look forward to future research findings.
Reference£º
Patent; BASF Aktiengesellschaft; US5045105; (1991); A;,
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