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CasNo: 144689-93-0
Molecular Formula: C12H20N2O3
Ethyl 4-(1-hydroxy-1-methylethyl)-2-propyl-imidazole-5-carboxylate is a chemical intermediate used in the production of Olmesartan. It is also known as 2-Propyl-5-(1-hydroxy-1-methylethyl)-3H-imidazole-4-carboxylic Acid Ethyl Ester. Shanghai Wibson Biotechnology Co., Ltd. is a high-tech enterprise that mainly develops and sells pharmaceutical and chemical raw materials and other related products. We have 16 years of experience in R&D and manufacturing, we have rich experience in shipping, many well-known companies have cooperated with us, and are good at shipping various chemical products with us.We can provide OEM,ODM service with low MOQ!
InChI:InChI=1/C12H20N2O3/c1-5-7-8-13-9(11(15)17-6-2)10(14-8)12(3,4)16/h16H,5-7H2,1-4H3,(H,13,14)
During the preparation of ethyl 4-(1-Hydroxy-1-methylethyl)-2-propylimidazole-5-carboxylate (1), derivative, eleven related substances (Impurities and analog) were observed along with the final Imidazole derivative. Those impurities were identified as, Ethyl carbinol imidazole (13), Methoxy imidazole (14), Olefinic imidazole (15), 4-Acetyl imidazole (12), Diacetyl imidazole (16), 5-Acetyl imidazole (17), Diethyl ester imidazole (9), Acetate imidazole Impurity (23), Propionate imidazole Impurity (29), Isobutyrate Imidazole Impurity (41) and butyl Imidazole Impurity (35). Present work describes the synthesis and characterization of all these elven impurities.
Wastewater was sampled directly from a pharmaceutical industry based in Hyderabad, India, primarily manufacturing API’s of the ARB class such as olmesartan (C24H26N6O3; molecular mass: 446.5 g/mol) and its intermediates. Olmesartan was produced by the industry by hydrolysis of olmesartan medoxomil (C29H30N6O6; molecular mass: 558.6 g/mol) in two sequential stages, after being initiated by the addition of KSM’s such as ethyl 4-(1-hydroxy-1-methylethyl)-2-propyl-imidazole-5-carboxylate
The invention relates to a preparation m...
methylmagnesium chloride
diethyl 2-(n-propyl)-1H-imidazole-4,5-dicarboxylate
ethyl 4-(2-hydroxypropan-2-yl)-2-propyl-1H-imidazole-5-carboxylate
Conditions | Yield |
---|---|
methylmagnesium chloride; diethyl 2-(n-propyl)-1H-imidazole-4,5-dicarboxylate; In tetrahydrofuran; at -10 - 0 ℃; for 0.166667h;
With water; ammonium chloride; In tetrahydrofuran; dichloromethane;
|
85% |
In tetrahydrofuran; 2-methyltetrahydrofuran; toluene; at 15 ℃; Flow reactor;
|
76.5% |
methylmagnesium chloride; diethyl 2-(n-propyl)-1H-imidazole-4,5-dicarboxylate; In tetrahydrofuran; toluene; for 6.5h; Inert atmosphere; Cooling with ice;
With hydrogenchloride; In tetrahydrofuran; water; toluene; pH=7;
|
|
In tetrahydrofuran; at 60 ℃; for 2h;
|
4.81 g |
methylene chloride
diethyl 2-(n-propyl)-1H-imidazole-4,5-dicarboxylate
ethyl 4-(2-hydroxypropan-2-yl)-2-propyl-1H-imidazole-5-carboxylate
Conditions | Yield |
---|---|
methylene chloride; With magnesium; In tetrahydrofuran; for 0.5h; Reflux;
diethyl 2-(n-propyl)-1H-imidazole-4,5-dicarboxylate; In tetrahydrofuran; at 30 ℃; for 2.5h; Solvent; Temperature;
|
80% |
methylene chloride; With magnesium; at 55 - 60 ℃; for 1h; Inert atmosphere;
diethyl 2-(n-propyl)-1H-imidazole-4,5-dicarboxylate; at 0 ℃; for 8h;
|
methylmagnesium bromide
diethyl 2-(n-propyl)-1H-imidazole-4,5-dicarboxylate
2-propyl-1H-imidazole-4,5-dicarboxylic acid
2-propylimidazole-4,5-dicarbonitrile
ethyl 4-(1-hydroxy-1-methylethyl)-2-propyl-1-[2'-(2-triphenylmethyl-2H-tetrazol-5-yl)biphenyl-4-yl]methyl-1H-imidazole-5-carboxylate
1-[{2'-cyanobiphenyl-4-yl}methyl]-4-(1-hydroxy-1-methylethyl)-2-propylimidazol-5-carboxylic acid ethyl ester
ethyl 4-(2-hydroxypropan-2-yl)-2-propyl-1-({2'-[1-(triphenylmethyl)-1H-1,2,3,4-tetrazol-5-yl]-[1,1'-biphenyl]-4-yl}methyl)-1H-imidazole-5-carboxylate
olmesartan