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CAS RN: 96-31-1 | Produkte #: D0289

1,3-Dimethylurea


Reinheit: >98.0%(GC)
Synonyme
  • 1,3-Dimethylcarbamide
Dokumente:
25G
15,00 €
2   ≥20 
500G
33,00 €
3   6  

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Artikel # D0289
Purity/Analysis Method >98.0%(GC)
Summenformel / Molekülmasse C__3H__8N__2O = 88.11  
Physikalischer Zustand (20 °C) Solid
CAS RN 96-31-1
Reaxys Registrierungsnummer 1740672
PubChem-Stoff-ID 87566985
Spektrale Daten (AIST) Link 2161
MDL-Nummer

MFCD00008286

Spezifikation
Appearance White to Almost white powder to crystaline
Purity(GC) min. 98.0 %
Melting point 102.0 to 108.0 °C
Solubility in Water almost transparency
Eigenschaften
Schmelzpunkt 105 °C
Siedepunkt 270 °C
Löslichkeit in Wasser Soluble
Löslichkeit (löslich in) Alcohol
Löslichkeit (unlöslich in) Ether
GHS
Piktogramm Pictogram
Signalwort Achtung
Gefahrenhinweise H373 : Kann die Organe schädigen bei längerer oder wiederholter Exposition.
Sicherheitshinweise P501 : Inhalt/ Behälter einer anerkannten Abfallentsorgungsanlage zuführen.
P260 : Staub /Rauch/ Gas/ Nebel/ Dampf/ Aerosol nicht einatmen.
P314 : Bei Unwohlsein ärztlichen Rat einholen/ ärztliche Hilfe hinzuziehen.
Verwandte Gesetze:
EC-Nummern 202-498-7
RTECS # YS9868000
Transportinformationen:
HS-Nr. (Import / Export) (TCI-E) 2924210090
Anwendung
Sodium- and Ammonia-Free Birch Reduction by Electroreduction

Experimental procedure: An electrochemical cell with magnesium as the anode and galvanized steel wire as the cathode is added to a substrate (0.1 mmol, 1.0 eq.), 1,3-dimethylurea (0.3 mmol, 3.0 eq), tripyrrolidinophosphine oxide (1.0 mmol, 10 eq.), and 1.5 mol/L THF solution of LiBr (500 µL). The reaction mixture is added to THF (3 mL) and is purged with argon. Electrolysis is initiated at a cell ampere of 10 mA at room temperature. After full consumption of substrate, the cell is washed with diethyl ether, and solvent is removed in vacuo. To residue solution is added diethyl ether and solution of Rochelle salt, and then is stirred until two clear layers formed. The organic layer is separated, and the aqueous layer is extracted twice with diethyl ether. The combined organic layers are dried over anhydrous MgSO4. After the organics removed in vacuo, the residue is purified by short silica colum (elution: ethyl acetate) to give product.

References


Anwendung
Sodium- and Ammonia-Free Birch Reduction by Electroreduction

Experimental procedure: An electrochemical cell with magnesium as the anode and galvanized steel wire as the cathode is added to a substrate (0.1 mmol, 1.0 eq.), 1,3-dimethylurea (0.3 mmol, 3.0 eq), tripyrrolidinophosphine oxide (1.0 mmol, 10 eq.), and 1.5 mol/L THF solution of LiBr (500 µL). The reaction mixture is added to THF (3 mL) and is purged with argon. Electrolysis is initiated at a cell ampere of 10 mA at room temperature. After full consumption of substrate, the cell is washed with diethyl ether, and solvent is removed in vacuo. To residue solution is added diethyl ether and solution of Rochelle salt, and then is stirred until two clear layers formed. The organic layer is separated, and the aqueous layer is extracted twice with diethyl ether. The combined organic layers are dried over anhydrous MgSO4. After the organics removed in vacuo, the residue is purified by short silica colum (elution: ethyl acetate) to give product.

References


Anwendung
Synthesis of Dihydropyrimidines via Biginelli Reaction (Three-component Reaction)

D0289

References


PubMed Literatur


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