A balanced equation for a chemical reaction indicates what is reacting and what is produced, but it reveals nothing about how the reaction actually takes place. The reaction mechanism is the process, or pathway, by which a reaction occurs.25021-08-3, name is 2-(2,5-Dioxo-2,5-dihydro-1H-pyrrol-1-yl)acetic acid. An updated downstream synthesis route of 25021-08-3 as follows., 25021-08-3
250 mg (1.07 mmol) of tert-butyl 3-[2-(2-aminoethoxy)ethoxy]propanoate, 151 mg (0.974 mmol) of 2-(2,5-dioxo-2,5-dihydro-1H-pyrrol-1-yl)acetic acid, 224 mg (1.46 mmol) of 1-hydroxy-1H-benzotriazole hydrate and 224 mg (1.17 mmol) of 1-(3-dimethylaminopropyl)-3-ethylcarbodiimide hydrochloride were dissolved in 5.0 ml of dimethylformamide. The reaction mixture was stirred at RT for 1 h. Ethyl acetate was added and the mixture was extracted twice with 5% strength citric acid solution and with saturated sodium bicarbonate solution. The organic phase was washed twice with saturated sodium chloride solution and dried over magnesium sulphate, and the solvent was evaporated under reduced pressure. The residue was purified by preparative RP-HPLC (column: Reprosil 250*40; 10mu, flow rate: 50 ml/min, MeCN/water/0.1% TFA). The solvents were evaporated under reduced pressure and the residue was dried under high vacuum. This gave 267 mg (64% of theory) of tert-butyl 3-[2-(2-{[(2,5-dioxo-2,5-dihydro-1H-pyrrol-1-yl)acetyl]amino}ethoxy)ethoxy]propanoate. LC-MS (Method 1): Rt=0.73 min; MS (ESIpos): m/z=371 (M+H)+.
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Reference£º
Patent; Bayer Pharma Aktiengesellschaft; LERCHEN, Hans-Georg; REBSTOCK, Anne-Sophie; CANCHO GRANDE, Yolanda; MARX, Leo; STELTE-LUDWIG, Beatrix; TERJUNG, Carsten; MAHLERT, Christoph; GREVEN, Simone; SOMMER, Anette; BERNDT, Sandra; (684 pag.)US2018/169256; (2018); A1;,
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