New discoveries in chemical research and development in 2021. The transformation of simple hydrocarbons into more complex and valuable products via catalytic C–H bond functionalisation has revolutionised modern synthetic chemistry. 7170-01-6, name is 3-Methyl-1H-1,2,4-triazole belongs to triazoles compound, it is a common compound, a new synthetic route is introduced below. Application In Synthesis of 3-Methyl-1H-1,2,4-triazole
A mixture of 3-methyl-lH-l,2,4-triazole (5.0 g, 60.2 mmol), 1- chloro-2-methoxy-4-nitrobenzene (11.3 g, 60.2 mmol), and KOH flakes (3.4 g, 48.1 mmol) in anhydrous DMSO (50 mL) was heated at 80 0C for 6 h. The reaction mixture was allowed to cool to rt and was poured into 800 mL of water with vigorous stirring. The aqueous mixture was extracted with EtOAc (3 x 200 mL). The combined organics were washed with brine, dried over Na2SO4, filtered and concentrated in vacuo. The crude residue was purified using silica gel chromatography (0-2% MeOH/chloroform, linear gradient) to afford l-(2-methoxy-4- nitrophenyl)-3-methyl-lH-l,2,4-triazole (3.7 g, 26 % yield). LC-MS (M+H)+ = 235.2.
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Reference:
Patent; BRISTOL-MYERS SQUIBB COMPANY; MARCIN, Lawrence, R.; THOMPSON, Lorin, A., III; BOY, Kenneth, M.; GUERNON, Jason, M.; HIGGINS, Mendi, A.; SHI, Jianliang; WU, Yong-Jin; ZHANG, Yunhui; MACOR, John, E.; WO2010/83141; (2010); A1;,
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