Related Products of 3398-16-1, These common heterocyclic compound, 3398-16-1, name is 4-Bromo-3,5-dimethylpyrazole, its traditional synthetic route has been very mature, but the traditional synthetic route has various shortcomings, such as complicated route, low yield, poor purity, etc, below Introduce a new synthetic route.
PREPARATION 924-Bromo-3,5-dimeth l-1 -(methylthiomethyl)-l H-pyrazoleTo a solution of 4-bromo-3,5-dimethyl-1 H-pyrazole (2.1 Og, 14.3mmol) in acetone (20 ml_) was added K2CO3 (2.37g, 17.1 mmol) followed by chloromethyl methyl sulfide (1.3 ml_, 5.7mmol). The light yellow suspension was stirred at room temperature for 96 hr. At this time the reaction was thick with white precipitate. The reaction mixture was stripped off volatiles, diluted with methylene chloride and filtered. The filtrate was concentrated under reduced pressure to give the title compound as a light yellow oil which was used without further purification.
Statistics shows that 4-Bromo-3,5-dimethylpyrazole is playing an increasingly important role. we look forward to future research findings about 3398-16-1.