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. 7411-23-6
NaH (60% dispersion in mineral oil; 5.29 g, 132 mmol) was added to a stirred solution of 3,5-dibromotriazole (20.0 g, 88.2 mmol) in DMF under an atmosphere of N2 at r.t. After 30 min, 2-iodopropane (10.6 ml, 106 mmol) was slowly added and the r.m. was heated at 40 C. for 2-3 h. The content was carefully poured onto ice/H2O (1 l), and the mixture was extracted with DIPE. The combined organic extracts were washed with H2O (4×200 ml), then with brine and dried (Na2SO4). Filtration and concentration under reduced pressure yielded a yellow oil. Yield: 16.50 g of intermediate 24 (70%).
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Reference:
Patent; Van Brandt, Sven Franciscus Anna; De Cleyn, Michel Anna Jozef; Gijsen, Henricus Jacobus Maria; Berthelot, Didier Jean-Claude; Surkyn, Michel; US2012/295891; (2012); A1;,
1,2,3-Triazole – Wikipedia,
Triazoles – an overview | ScienceDirect Topics