With the rapid development and complex challenges of chemical substances, new drug synthesis pathways are usually the most effective.219823-47-9,(R)-Tetrahydrofuran-3-yl 4-methylbenzenesulfonate,as a common compound, the synthetic route is as follows.
Step 2: Synthesis of 4-Bromo-1 -[(3S)-tetrahydrofuran-3-yl]pyrazole 3.6A mixture of 650 mg [(3R)-tetrahydrofuran-3-yl] 4-methylbenzenesulfonate, 400 mg 4-bromo- 1 H-pyrazole and 1 .40 g cesium carbonate in 10 mL Nu,Nu-dimethylformamide (DMF) was stirred at 65 C for 6 h. Additional 20 mg 4-bromo-1 H-pyrazole were added and the reaction mixture was stirred at 65 C overnight. The reaction mixture was diluted with ethyl acetate and washed with brine. The combined organic phases were dried over sodium sulfate, filtered and concentrated in vacuo. The crude material was purified by flash chromatography (cyclohexane/ethyl acetate 9:1 ->1 :1 ) to yield 476 mg of 4-bromo-1 -[(3S)-tetrahydrofuran-3- yl]pyrazole 3J3 as solid.Analysis: MS: M+H = 217 / 219
219823-47-9, 219823-47-9 (R)-Tetrahydrofuran-3-yl 4-methylbenzenesulfonate 13837325, aTetrahydrofurans compound, is more and more widely used in various fields.
Reference£º
Patent; BOEHRINGER INGELHEIM INTERNATIONAL GMBH; DAHMANN, Georg; HOFFMANN, Matthias; KLICIC, Jasna; LAMB, David James; MCCARTHY, Clive; NAPIER, Spencer; PARRISH, Karen; SCOTT, John; SWANTEK FITZGERALD, Jennifer L.; WALKER, Edward; WO2015/140054; (2015); A1;,
Tetrahydrofuran – Wikipedia
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