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. 7411-23-6, name is 3,5-Dibromo-1H-1,2,4-triazole belongs to triazoles compound, it is a common compound, a new synthetic route is introduced below. Recommanded Product: 3,5-Dibromo-1H-1,2,4-triazole
a) 3 ,5-Dibromo- 1 -(4-methoxy-benzyl)- 1 H-[ 1 ,2,4]triazole 3,5-dibromo-lH-l,2,4-triazole (1.5 g, 6.61 mmol, Eq: 1.00), potassium iodide (110 mg, 661 muiotaetaomicron, Eq: 0.10), 4-methoxybenzyl chloride (1.14 g, 990 mu, 7.27 mmol, Eq: 1.1) and N,N- diisopropylethylamine (1.71 g, 2.31 ml, 13.2 mmol, Eq: 2.0) was stirred in acetonitrile (23.0 ml) overnight at roomtemperature. The crude material was applied on silica gel and purified by column chromatography using heptane / ethyl acetate gradient as eluent to afford 3,5-dibromo-l- (4-methoxy-benzyl)-lH-[l,2,4]triazole (1.79 g / 78.0%) as a white solid. MS: m/e= 345/6/8/50/51 (M+H+), mp: 75.7C
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Reference:
Patent; F. HOFFMANN-LA ROCHE AG; HOFFMANN-LA ROCHE INC.; FLOHR, Alexander; GROEBKE ZBINDEN, Katrin; KUHN, Bernd; LERNER, Christian; RUDOLPH, Markus; SCHAFFHAUSER, Herve; WO2013/178572; (2013); A1;,
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