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Ethyl 2,5-Dioxopyrrole-1-carboxylate

CAS No.
55750-49-7
Chemical Name:
Ethyl 2,5-Dioxopyrrole-1-carboxylate
Synonyms
NSC 266054;N-Carbethoxymaleimide;N-Ethoxycarbonylmaleimide;N-Ethyoxycarbonyl MaleiMide;Ethyl 2,5-Dioxopyrrole-1-carboxylate;ethyl 2,5-dioxo-2H-pyrrole-1(5H)-carboxylate;Ethyl 2,5-dioxo-2,5-dihydro-1H-pyrrole-1-carboxylate;1H-Pyrrole-1-carboxylic acid, 2,5-dihydro-2,5-dioxo-, ethyl ester
CBNumber:
CB12520705
Molecular Formula:
C7H7NO4
Molecular Weight:
169.13
MDL Number:
MFCD16619570
MOL File:
55750-49-7.mol
Last updated:2025-07-24 18:13:52

Ethyl 2,5-Dioxopyrrole-1-carboxylate Properties

Boiling point 257.3±23.0 °C(Predicted)
Density 1.407±0.06 g/cm3(Predicted)
storage temp. under inert gas (nitrogen or Argon) at 2-8°C
pka -3.11±0.20(Predicted)
Appearance White to off-white Solid

SAFETY

Risk and Safety Statements

HS Code  2933998090

Ethyl 2,5-Dioxopyrrole-1-carboxylate price More Price(13)

Manufacturer Product number Product description CAS number Packaging Price Updated Buy
Usbiological 448986 Ethyl 2,5-dioxopyrrole-1-carboxylate 55750-49-7 100mg $305 2021-12-16 Buy
Apolloscientific OR953252 Ethyl2,5-dioxopyrrole-1-carboxylate 95% 55750-49-7 5g $395 2021-12-16 Buy
Apolloscientific OR953252 Ethyl2,5-dioxopyrrole-1-carboxylate 95% 55750-49-7 1g $115 2021-12-16 Buy
Ambeed A191928 Ethyl2,5-dioxo-2,5-dihydro-1H-pyrrole-1-carboxylate 97% 55750-49-7 5g $130 2021-12-16 Buy
Chemenu CM197916 ethyl2,5-dioxo-2,5-dihydro-1H-pyrrole-1-carboxylate 97% 55750-49-7 5g $184 2021-12-16 Buy
Product number Packaging Price Buy
448986 100mg $305 Buy
OR953252 5g $395 Buy
OR953252 1g $115 Buy
A191928 5g $130 Buy
CM197916 5g $184 Buy

Ethyl 2,5-Dioxopyrrole-1-carboxylate Chemical Properties,Uses,Production

Synthesis

Maleimide

541-59-3

Ethyl chloroformate

541-41-3

Ethyl 2,5-Dioxopyrrole-1-carboxylate

55750-49-7

1) Synthesis of ethyl 2,5-dioxo-2,5-dihydro-1H-pyrrole-1-carboxylate: 9.7 g (0.1 mol) of maleimide was dissolved in a mixed solution of 50 ml of ethyl acetate and 1.1 ml of N-methylmorpholine at 5 °C. Slowly 1.1 ml of ethyl chloroformate was added dropwise to the above solution. The reaction mixture was stirred at the same temperature for 30 minutes. After completion of the reaction, insoluble impurities were removed by filtration. The filtrate was washed with 50 ml of water and the organic phase was separated and dried with anhydrous magnesium sulfate. The dried organic phase was concentrated under reduced pressure to give the crude product. The crude product was purified by silica gel column chromatography (Merck Geduran silica gel, 40-63 μm) with dichloromethane/ethyl acetate (66/34, v/v) as eluent. Finally, 16.9 g of pure product was obtained in 50% yield. Mass spectrometry results: m/z = 170.1 (ES+), theoretical molecular weight M = 169.

References

[1] Organic Letters, 2015, vol. 17, # 23, p. 5846 - 5849
[2] Chemical Communications, 2014, vol. 50, # 7, p. 859 - 861
[3] Patent: US2010/297025, 2010, A1
[4] Patent: US9273304, 2016, B2. Location in patent: Page/Page column 16

Ethyl 2,5-Dioxopyrrole-1-carboxylate Preparation Products And Raw materials

Global( 64)Suppliers
Supplier Tel Email Country ProdList Advantage
career henan chemical co
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View Lastest Price from Ethyl 2,5-Dioxopyrrole-1-carboxylate manufacturers

Image Update time Product Price Min. Order Purity Supply Ability Manufacturer
Ethyl 2,5-Dioxopyrrole-1-carboxylate pictures 2019-09-02 Ethyl 2,5-Dioxopyrrole-1-carboxylate
55750-49-7
US $1.00 / KG 1KG ≥98% 200KG Career Henan Chemical Co

Ethyl 2,5-Dioxopyrrole-1-carboxylate Spectrum

Ethyl 2,5-Dioxopyrrole-1-carboxylate 1H-Pyrrole-1-carboxylic acid, 2,5-dihydro-2,5-dioxo-, ethyl ester ethyl 2,5-dioxo-2H-pyrrole-1(5H)-carboxylate N-Carbethoxymaleimide NSC 266054 N-Ethyoxycarbonyl MaleiMide N-Ethoxycarbonylmaleimide Ethyl 2,5-dioxo-2,5-dihydro-1H-pyrrole-1-carboxylate 55750-49-7 Life Science Chemical Reagents