METHYL 4-BROMO-2,5-DIMETHYL-1H-PYRROLE-3-CARBOXYLATE Chemical Properties

Boiling point:

344.5±37.0 °C(Predicted)

Density 

1.503±0.06 g/cm3(Predicted)

storage temp. 

2-8°C

pka

15.20±0.50(Predicted)

Safety Information

Hazard Codes 

Xi

Hazard Note 

Irritant

METHYL 4-BROMO-2,5-DIMETHYL-1H-PYRROLE-3-CARBOXYLATE Usage And Synthesis

Synthesis

Methyl 2,5-dimethyl-1H-pyrrole-3-carboxylate (6.85 g, 45.0 mmol) was used as a raw material and was mixed with triethylamine (8.7 mL, 63.0 mmol) and dichloromethane (270 mL). Pyridinium bromide (15.7 g, 15.7 mmol) was added to the mixture in batches at 0 °C. The reaction mixture was stirred at 0 °C for 2 h before being poured into brine and extracted with ethyl acetate. The organic layers were combined, dried with anhydrous magnesium sulfate and subsequently concentrated under reduced pressure. The crude product was purified by silica gel column chromatography (eluent: hexane-ethyl acetate). The final product, methyl 4-bromo-2,5-dimethyl-1H-pyrrole-3-carboxylate, was recrystallized by hexane-ethyl acetate to give yellow crystals (7.59 g, 92% yield).1H NMR (300 MHz, CDCl3) δ: 2.19 (3H, s), 2.47 (3H, s), 3.82 (3H, s), 8.20 (1H, s).

References

[1] Bioorganic and Medicinal Chemistry, 2012, vol. 20, # 1, p. 422 - 434
[2] Journal of Medicinal Chemistry, 1993, vol. 36, # 19, p. 2739 - 2744
[3] Patent: EP1466902, 2004, A1. Location in patent: Page 31

METHYL 4-BROMO-2,5-DIMETHYL-1H-PYRROLE-3-CARBOXYLATE(120935-94-6)Related Product Information

• ACETONE-D6
• 2,5-DIMETHYLPYRROLE-3-CARBOXYLIC ACID
• METHYL 4-BROMO-2,5-DIMETHYL-1H-PYRROLE-3-CARBOXYLATE
• 3-BROMO-1H-PYRROLE