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. 50893-36-2, name is 1-Chloroethyl ethyl carbonate, A new synthetic method of this compound is introduced below., Application In Synthesis of 1-Chloroethyl ethyl carbonate
EXAMPLE 16 1-[(Ethoxycarbonyl)oxy]ethyl 2-[3-(2-thienyl)acrylamido]benzoate A mixture of 2-[3-(2-thienyl)acrylamido]benzoic acid (273 mg, 1 mmol) and triethylamine (0.2 ml, 1.4 mmol) in dry acetone (10 ml) was stirred at room temperature for 30 minutes. To the solution, 1-chloroethyl ethyl carbonate (214 mg, 1.4 mmol) and sodium iodide (210 mg, 1.4 mmol) were added under ice cooling, and the mixture was heated under reflux for 19 hours. The reaction mixture was filtered by suction and the solvent was removed from the filtrate. The residue was dissolved in chloroform, washed with saturated aqueous sodium hydrogen carbonate, then with saturated aqueous sodium chloride, and dried over magnesium sulfate. After removing the solvent, the residue was purified by silica gel column chromatography (developing solvent:benzene:ether=49:1). The second elude was collected. After removing the solvent, the resulted oily product was crystallized with isopropyl ether to give the desired compound (98 mg, yield, 25percent). m.p., 154°-156° C. (white crystals, recrystallized from methanol/tetrahydrofuran/water). IR (KBr, cm-1): 3250, 1755, 1690 (shoulder), 1670 1 H-NMR (CDCl3, delta): 1.32 (t, 3H, –CH2 CH3), 1.67 (d, 3H, –CH(CH3)–), 4.23 (q, 2H, –CH2 CH3), 6.17-8.17 (m, 9H, aromatic hydrogen, vinyl hydrogen, –CH(CH3)–), 8.83 (d, 1H, aromatic hydrogen), 11.13 (brs, 1H, –CONH–)
The synthetic route of 50893-36-2 has been constantly updated, and we look forward to future research findings.
Reference:
Patent; Sawai Pharmaceutical Co., Ltd.; US5006548; (1991); A;,
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