ETHYL IMIDAZOLE-2-CARBOXYLATE Chemical Properties

Melting point:

176-178°C

Boiling point:

48-51°C 0,3mm

Density 

1.214±0.06 g/cm3(Predicted)

Flash point:

48-51°C/0.3mm

storage temp. 

Inert atmosphere,Room Temperature

solubility 

DMSO (Slightly), Methanol (Slightly)

form 

Solid

pka

11.38±0.10(Predicted)

color 

Off-White to Pale Beige

BRN 

115685

InChI

InChI=1S/C6H8N2O2/c1-2-10-6(9)5-7-3-4-8-5/h3-4H,2H2,1H3,(H,7,8)

InChIKey

UHYNYIGCGVDBTC-UHFFFAOYSA-N

SMILES

C1(C(OCC)=O)NC=CN=1

CAS DataBase Reference

33543-78-1(CAS DataBase Reference)

Safety Information

Hazard Codes 

Xi

Risk Statements 

36/37/38

Safety Statements 

26-36-37

Hazard Note 

Irritant

HS Code 

29332900

MSDS

• Language:English Provider:ALFA

ETHYL IMIDAZOLE-2-CARBOXYLATE Usage And Synthesis

Chemical Properties

Light brown powder

Uses

Ethyl Imidazole-2-carboxylate is an intermediate used to synthesize tricyclic quinoxalinone inhibitors of poly(ADP-ribose)polymerase-1 (PARP-1). It is also used to prepare imidazoindenopyrazinone carboxylic acid derivatives as AMPA antagonists with anticonvulsant activities.

Synthesis Reference(s)

The Journal of Organic Chemistry, 60, p. 1090, 1995 DOI: 10.1021/jo00109a052

Synthesis

The above residue was dissolved in ethanol (300 mL). Concentrated sulfuric acid (98%, 30 mL, 522 mmol, 2.76 eq.) was added slowly and dropwise with stirring while controlling the reaction temperature to not exceed 25°C. The reaction mixture was heated and refluxed and stirred for 7 hours, followed by continued stirring at room temperature overnight. Upon completion of the reaction, ethanol was removed by distillation under reduced pressure. The resulting suspension was diluted with ice water (200 mL) and the pH was adjusted to 5-6 with concentrated ammonia, keeping the temperature below 5 °C during the process. The solid product was collected by filtration, washed with water (10 mL x 3) and dried under vacuum to give the first crude product (10 g). The filtrate was extracted with ethyl acetate (200 mL×2), the organic phases were combined, washed with saturated brine, dried with anhydrous sodium sulfate and filtered. The filtrate was concentrated under reduced pressure, combined with the first batch of crude product, and finally recrystallized in isopropyl ether to obtain ethyl 1H-imidazole-2-carboxylate (18 g, yield 64.3%).

References

[1] Patent: WO2013/12915, 2013, A1. Location in patent: Paragraph 00945
[2] Journal of Organic Chemistry, 1995, vol. 60, # 4, p. 1090 - 1092
[3] Patent: WO2011/146882, 2011, A1. Location in patent: Page/Page column 108-109

ETHYL IMIDAZOLE-2-CARBOXYLATE(33543-78-1)Related Product Information

• ETHYL IMIDAZOLE-4-CARBOXYLATE
• 1H-Imidazole-2-carboxylic acid
• Imidazo[1,2-a]pyridine-7-boronic acid pinacol ester
• ETHYL 5-PYRIMIDINECARBOXYLATE 98
• Imidazole
• Methyl 4-imidazolecarboxylate
• Imidazole-4-acetic acid
• Imidazol-1-yl-acetic acid
• 4,5-Imidazoledicarboxylic acid
• Ethyl Imidazo[1,2-a]pyridine-3-carboxylate
• METHYL IMIDAZO[1,2-A]PYRIDINE-6-CARBOXYLATE
• 3,5-DIMETHANOLPYRIDINE
• 1H-IMIDAZOLE-2-CARBOXYLIC ACID METHYL ESTER
• ETHYL 1-METHYL-1H-IMIDAZOLE-2-CARBOXYLATE
• ETHYL IMIDAZOLE-2-CARBOXYLATE
• Ethyl 2-methyl-1H-imidazole-4-carboxylate
• 4-ETHOXYCARBONYLIMIDAZOLE-2-THIOL
• ETHYL 4-AMINO-1-METHYL-1H-IMIDAZOLE-5-CARBOXYLATE