Researchers who often do experiments know that organic synthesis is a process of preparing more complex target molecules from simple raw materials through one or more chemical reactions. Generally, it requires fewer steps,and cheap raw materials. 10397-13-4, name is 4-(4,6-Dichloropyrimidin-2-yl)morpholine. A new synthetic method of this compound is introduced below., Quality Control of 4-(4,6-Dichloropyrimidin-2-yl)morpholine
General procedure: A solution of the product from step 2.3 (95 mg, 0.25 mmol), intermediate A (58 mg, 0.25 mmol), xantphos (10 mg, 0.02 mmol), Pd2 dba3 (4.5 mg, 4.95 umol) and Cs2CO3 (121 mg, 0.37 mmol) in dioxane under argon was stirred at 100 C. for 3 h. The mixture was cooled to rt, diluted with EtOAc and extracted with a saturated NaHCO3 solution. The organic layer was washed with brine, dried (Na2SO4), filtered and concentrated. The residue was purified by flash chromatography (heptane/EtOAc, 100:0?0:100) to give the title product (85 mg, 56%). tR: 1.54 min (LC-MS 1); ESI-MS: 581.4/583.3 [M+H]+ (LC-MS 1).
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Reference:
Patent; NOVARTIS AG; CARAVATTI, Giorgio; FAIRHURST, Robin Alec; FURET, Pascal; STAUFFER, Frederic; SEILER, Frank Hans; MCCARTHY, Clive; RUEEGER, Heinrich; US2013/225574; (2013); A1;,
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