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. 671802-00-9, name is tert-Butyl 3-(2-hydroxyethoxy)propanoate. A new synthetic method of this compound is introduced below., name: tert-Butyl 3-(2-hydroxyethoxy)propanoate
Step 1: Synthesis of tert-butyl 3-{2-[(5-bromopyridin-2-yl)oxy]ethoxy}propanoate:[0692] To a stirred solution of 5-bromopyridin-2-ol (3.0 g, 17.24 mmol), tert-butyl 3-(2- hydroxyethoxy)propanoate (3.3 g, 17.19 mmol) and triphenylphosphine (6.8 g, 25.81 mmol) in tetrahydrofuran (120.0 mL) was added diethyl diazene-l,2-dicarboxylate (4.49 g, 25.78 mmol) dropwise at 0 C under an atmosphere of nitrogen. The resulting solution was stirred overnight at rt. The reaction mixture was concentrated under reduced pressure to give a crude residue, which was purified by silica gel flash chromatography (eluent: ethyl acetate/petroleum ether, v/v =1/3) to provide the titled product (yield: 50%) as colorless oil.
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Reference:
Patent; ARVINAS, INC.; JIN, Meizhong; CREW, Andrew, P.; DONG, Hanqing; WANG, Jing; SIU, Kam; FERRARO, Caterina; CHEN, Xin; QIAN, Yimin; (351 pag.)WO2016/118666; (2016); A1;,
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