6531-31-3

Basic information

• Product Name: 4-methylimidazolidin-2-one
• Synonyms: 4-methylimidazolidin-2-one;4-Methyl-2-imidazolidone;2-Imidazolidinone, 4-methyl-;4-Methyl-2-imidazolidinone;Ai3-62204;Einecs 229-427-2;Nsc 44967;Propyleneurea (van)
• CAS NO: 6531-31-3
• Molecular Formula: C₄H₈N₂O
• Molecular Weight: 100.11912
• EINECS: 229-427-2
• Mol File: 6531-31-3.mol
• Article Data: 22

Chemical Properties

• Boiling Point: 314.5°C at 760 mmHg
• Flash Point: 170.5°C
• Appearance: /
• Density: 1.029g/cm³
• Vapor Pressure: 0.000463mmHg at 25°C
• Refractive Index: 1.434
• CAS DataBase Reference: 4-methylimidazolidin-2-one(CAS DataBase Reference)
• NIST Chemistry Reference: 4-methylimidazolidin-2-one(6531-31-3)
• EPA Substance Registry System: 4-methylimidazolidin-2-one(6531-31-3)

Safety Data

• Hazardous Substances Data: 6531-31-3(Hazardous Substances Data)

Usage

Synthesis Reference(s)

Synthesis, p. 1032, 1983 DOI: 10.1055/s-1983-30616

InChI:InChI=1/C4H8N2O/c1-3-2-5-4(7)6-3/h3H,2H2,1H3,(H2,5,6,7)

Upstream product

• 78-90-0 1,2-diaminopropan 
• 124-38-9 carbon dioxide 
• 57-13-6 urea 
• 201230-82-2 carbon monoxide 
• 67337-69-3 methyl-5 hydantoine 
• 23589-75-5 5-(2,4-dichloro-phenyl)-[1,3,4]oxathiazol-2-one 
• 82831-19-4 5-methyl-2-oxo-2,3-dihydro-1H-imidazole-4-carboxylic acid ethyl ester 
• 1192-34-3 4-methyl-1,3-dihydro-imidazol-2-one 

Downstream Products

• 19777-66-3 (racemi)-1,2-diaminopropane dihydrochloride 

Relevant articles and documents

SBA-15 Supported Dendritic ILs as a Green Catalysts for Synthesis of 2-Imidazolidinone from Ethylenediamine and Carbon Dioxide

In this work, a simple and facile approach is conducted for preparing many new SBA-15 supported dendritic imidazolium ILs heterogeneous catalysts SBA-15/IL(1–3) having high ionic density from SBA-15. SBA-15/IL(3) as a green heterogeneous catalyst can be used for synthesis of 2-imidazolidinone from ethylenediamine and carbon dioxide and considering solvent-free condition. SBA-15/IL(3) showed to have the highest catalytic activity besides a positive dendritic influence on the yields of the synthesis of 2-imidazolidinone in the presence of CO2 is seen because of existing the high-density peripheral zwitterionic ionic liquid functional groups on the biobased SBA-15/IL(3) catalyst surfaces. Graphical Abstract: [Figure not available: see fulltext.]

Rhodium(III)-catalyzed Intermolecular Unactivated Secondary C(sp3)?H Bond Amidation Directed by 3,5-dimethylpyrazole

A Rh(III)-catalyzed intermolecular unactivated secondary C(sp3)?H bond amidation via nitrene insertion directed by 3,5-dimethylpyrazole is reported. This procedure tolerates a broad substrate scope including chain and cyclic N-alklyamides. Notably, the directing group 3,5-dimethylpyrazole of chain N-alkylamide substrates could be easily removed via cascade intermolecular amidation and intramolecular cyclization in one-pot affording the sulfonylureas by increasing the reaction temperature. (Figure presented.).

Ionic liquids/ZnO nanoparticles as recyclable catalyst for polycarbonate depolymerization

A useful protocol for waste bis-phenol A-polycarbonates (BPA-PC) chemical recycling is proposed based on a bifunctional acid/basic catalyst composed by nanostructured zinc oxide and tetrabutylammonium chloride (ZnO-NPs/NBu4Cl) in quality of Lewis acid and base, respectively. Retro-polymerization reaction proved to be of general application for several nucleophiles, including water, alcohols, amines, polyols, aminols and polyamines, leading to the complete recovery of BPA monomer and enabling the PC polymer to function as a green carbonylating agent (green phosgene alternative) for preparing carbonates, urethanes and ureas. A complete depolymerization can be obtained in seven hours at 100 °C and ZnO nanocatalyst can be recycled several times without sensible loss of activity. Remarkably, when polycarbonate is reacted with glycerol, it is possible to realize in a single process the conversion of two industrial wastes (BPA-PC and glycerol) into two valuable chemicals like BPA monomer and glycerol carbonate (the latter being a useful industrial solvent and fuel additive).