These common heterocyclic compound, 150058-27-8, name is Methyl 2-ethoxy-1H-benzo[d]imidazole-7-carboxylate, its traditional synthetic route has been very mature, but the traditional synthetic route has various shortcomings, such as complicated route, low yield, poor purity, etc, below Introduce a new synthetic route. SDS of cas: 150058-27-8
BIM (20 g, 1 eq) was dissolved in dimethylacetamide:methanol [(1:4), (100 mL, 5 vol)], potassium carbonate (18.8 g, 1.5 eq) was added thereto, and the mixture was stirred at 25¡ãC – 30¡ãC for 15 min. Furthermore, BCL (34.4 g, 1.05 eq) and tetrabutylammonium iodide (1.67 g, 0.05 eq) were added thereto, and the mixture was stirred at the same temperature for 26 hr. Using TLC (TLC: 40percent ethyl acetate/hexane, detection method: UV), complete consumption of BIM was confirmed. To the reaction mixture was added water (200 mL, 10 vol), the mixture was stirred for 2 hr, and the precipitated pink solid was filtered. The obtained solid was washed with water (40 mL, 2 vol), dried with suction for 15 min, and blast dried at 50¡ãC – 55¡ãC for 4 hr to give a mixture of crude CBME and compound 37 (49 g, CBME:compound 37=6:1 (molar ratio)). The crude product was directly used for the next step (4).
The synthetic route of Methyl 2-ethoxy-1H-benzo[d]imidazole-7-carboxylate has been constantly updated, and we look forward to future research findings.
Reference:
Patent; API Corporation; SEKI, Masahiko; EP2891650; (2015); A1;,
Imidazole – Wikipedia,
Imidazole | C3H4N2 – PubChem