1,1-Dimethylurea

1,1-Dimethylurea (DMU) is a urea derivative used as a polar solvent and a reagent in organic reactions. It is a solid, but forms a eutectic with a low melting point in combination with various hydroxylic additives that can serve as a environmentally sustainable solvent for various chemical reactions.^[1]^[2]^[3]^[4] The unsubstituted nitrogen, as an amine-like region, can serve as a nucleophile for a wide range of reactions, including reaction with acyl halides to form acylureas,^[5] coupling with vinyl halides,^[6] and multi-component condensation reaction with aldehydes.^[7] The unsubstituted amide-like portion can undergo oxidative coupling with alkenes to give dihydrooxazoles.^[8]

Quick facts Names, Identifiers ...

1,1-Dimethylurea
Names

Preferred IUPAC name N,N-Dimethylurea
Identifiers
CAS Number	598-94-7^Y
3D model (JSmol)	Interactive image
ChemSpider	11244
ECHA InfoCard	100.009.053
PubChem CID	11737
UNII	I988R763P3
CompTox Dashboard (EPA)	DTXSID0060515
InChI InChI=1S/C3H8N2O/c1-5(2)3(4)6/h1-2H3,(H2,4,6) Key: YBBLOADPFWKNGS-UHFFFAOYSA-N
SMILES CN(C)C(=O)N
Properties
Chemical formula	C₃H₈N₂O
Molar mass	88.110 gÂ·mol^â1
Hazards
GHS labelling:
Pictograms
Signal word	Warning
Hazard statements	H315, H319, H335
Precautionary statements	P261, P264, P264+P265, P271, P280, P302+P352, P304+P340, P305+P351+P338, P319, P321, P332+P317, P337+P317, P362+P364, P403+P233, P405, P501
Related compounds
Related compounds	1,3-Dimethylurea
Except where otherwise noted, data are given for materials in their standard state (at 25 Â°C [77 Â°F], 100 kPa). Infobox references

[1]
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[2]
Lu, Jun; Li, Xiao-Tang; Ma, Er-Qian; Mo, Li-Ping; Zhang, Zhan-Hui (2014). "Superparamagnetic CuFeO₂ Nanoparticles in Deep Eutectic Solvent: An Efficient and Recyclable Catalytic System for the Synthesis of Imidazo[1,2-a]pyridines". ChemCatChem. 6 (10): 2854â2859. doi:10.1002/cctc.201402415.
[3]
Imperato, Giovanni; Eibler, Ernst; Niedermaier, Julia; KÃ¶nig, Burkhard (2005). "Low-melting sugarâureaâsalt mixtures as solvents for DielsâAlder reactions". Chem. Commun. (9): 1170â1172. doi:10.1039/b414515a. PMID 15726181.
[4]
Ilgen, Florian; KÃ¶nig, Burkhard (2009). "Organic reactions in low melting mixtures based on carbohydrates and L-carnitineâa comparison". Green Chemistry. 11 (6): 848. doi:10.1039/B816551C.
[5]
Sobol, Eyal; Bialer, Meir; Yagen, Boris (2004). "Tetramethylcyclopropyl Analogue of a Leading Antiepileptic Drug, Valproic Acid. Synthesis and Evaluation of Anticonvulsant Activity of Its Amide Derivatives". Journal of Medicinal Chemistry. 47 (17): 4316â4326. doi:10.1021/jm0498351. PMID 15294003.
[6]
Belfrage, Anna Karin; Gising, Johan; Svensson, Fredrik; Ãkerblom, Eva; SkÃ¶ld, Christian; SandstrÃ¶m, Anja (2015). "Efficient and Selective Palladium-Catalysed C-3 Urea Couplings to 3,5-Dichloro-2(1H)-pyrazinones". European Journal of Organic Chemistry (5): 978â986. doi:10.1002/ejoc.201403405.
[7]
Ahamed, Anis; Arif, Ibrahim A.; Moydeen, Meera; Kumar, Radhakrishnan Surendra; Idhayadhulla, Akbar (2018). "In-Vitro Antibacterial and Cytotoxicity Evaluation of Some Novel Tetrazole Derivatives". International Journal of Pharmaceutical Sciences and Research. 9 (8): 3322â3327. doi:10.13040/IJPSR.0975-8232.9(8).3322-27.
[8]
Wu, Fan; Alom, Nur-E; Ariyarathna, Jeewani P.; NaÃ, Johannes; Li, Wei (2019). "Regioselective Formal [3+2] Cycloadditions of Urea Substrates with Activated and Unactivated Olefins for Intermolecular Olefin Aminooxygenation". Angewandte Chemie International Edition. 58 (34): 11676â11680. doi:10.1002/anie.201904662. PMID 31211504.

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