New discoveries in chemical research and development in 2021. Chemo-enzymatic cascade processes are invaluable due to their ability to rapidly construct high-value products from available feedstock chemicals in a one-pot relay manner. 23579-79-5, name is 3,5-Dibromo-1-methyl-1H-1,2,4-triazole belongs to triazoles compound, it is a common compound, a new synthetic route is introduced below. Safety of 3,5-Dibromo-1-methyl-1H-1,2,4-triazole
Synthesized according to the method described in WO2011 / 006903A13,5-Dibromo-1-methyl-1 H-1,2,4-triazole (0.5 g)Was dissolved in dioxane (20 ml)And the mixture was stirred at room temperature. To this was added water (3 ml),2-fluoro-4- (trifluoromethyl) phenylboronic acid (0.43 g),Tetrakis (triphenylphosphine) palladium (0) (0.12 g),Cesium carbonate (1.0 g) was added,The inside of the reaction vessel was replaced with nitrogen,The mixture was stirred under heating reflux overnight.The reaction solution was poured into water,And extracted with ethyl acetate.The obtained organic layer was washed with saturated brine,It was dried over anhydrous magnesium sulfate,It was filtered.The filtrate was concentrated under reduced pressure,The obtained residue was purified by silica gel column chromatography to obtain 0.31 g (yield 46%) of the objective compound.
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Reference:
Patent; Nippon Soda Co., Ltd.; Aoyama, Hikaru; Banzai, Keita; Iwasa, Takao; Kobayashi, Asami; (43 pag.)JP2017/110003; (2017); A;,
1,2,3-Triazole – Wikipedia,
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