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. 57561-39-4, name is tert-Butyl (2-hydroxyethyl)(methyl)carbamate, A new synthetic method of this compound is introduced below., Quality Control of tert-Butyl (2-hydroxyethyl)(methyl)carbamate
Reference Synthetic Example 14 Ethyl 2-(methylamino)ethyl carbonate hydrochloride To a mixture of tert-butyl 2-hydroxyethyl(methyl)carbamate (1.75 g) obtained in Reference Synthetic Example 1 and ethyl acetate (20 mL) were added pyridine (0.97 mL) and 4-dimethylaminopyridine (catalytic amount), and ethyl chlorocarbonate (1.25 mL) was added. After stirring overnight at room temperature, ethyl acetate (50 mL) was added to the reaction solution, and washed sequentially with water (50 mL), 5% aqueous solution of citric acid (50 mL), and saturated saline (50 mL), followed by drying over anhydrous magnesium sulfate. The solution was concentrated under reduced pressure, and to the residue was added 4N hydrogen chloride-ethyl acetate solution (10 mL). After stirring at room temperature for 2 hrs, diethyl ether (10 mL) was added thereto, and the depositting solid was collected by filtration. The solid was dried under reduced pressure to give title compound as white solid (1.66 g). 1H-NMR (DMSO-d6): 1.23 (3H,t,J=7.1Hz), 2.54(3H,s), 3.16-3.22(2H,m), 4.15 (2H,q,J=7.1Hz), 4.32-4.37(2H,m), 9.25(2H,br).
The synthetic route of 57561-39-4 has been constantly updated, and we look forward to future research findings.
Reference:
Patent; Takeda Pharmaceutical Company Limited; EP1602362; (2005); A1;,
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