Dimethylamine → HCID 20488245, Verbindung

HRID 1995348Notizen

Reaktionsgleichung

Reaktionsgleichung von HRID 1995348
[O:1]=[C:2]1[CH:7]=[C:6]([C:8](O)=[O:9])[C:5]([C:11]2[CH:16]=[CH:15][CH:14]=[CH:13][CH:12]=2)=[N:4][NH:3]1.ClC(OCC)=O.[CH3:23][NH:24][CH3:25]>C(N(CC)CC)C>[CH3:23][N:24]([CH3:25])[C:8]([C:6]1[C:5]([C:11]2[CH:16]=[CH:15][CH:14]=[CH:13][CH:12]=2)=[N:4][NH:3][C:2](=[O:1])[CH:7]=1)=[O:9]

Komponenten

5

Edukt 3

HCID 674DimethylamineHCID 10928Ethyl chloroformateHCID 10656345HCID 10656345, Verbindung

Produkt 1

HCID 20488245HCID 20488245, Verbindung

Reagenzien, Katalysatoren, Lösungsmittel 1

HCID 8471TriethylamineLösungsmittel

Versuchsvorschrift

2,3-Dihydro-3-oxo-6-phenyl-5-pyridazinecarboxylic acid is treated with ethyl chloroformate, triethylamine, and dimethylamine according to the procedure of Example 3 to give N,N-dimethyl-2,3-dihydro-3-oxo-6-phenyl-5-pyridazinecarboxamide. A solution of this amide (12.5 g) in 400 ml of tetrahydrofuran is treated with 100 ml of 1 M borane in tetrahydrofuran and the resulting mixture is heated under reflux for 4 hours, then cooled and treated with 5% sodium hydroxide (100 ml) and heated under reflux for 1 hour. The tetrahydrofuran is removed on the rotary evaporator and the pH of the residual liquid is adjusted with acetic acid followed by ammonium hydroxide to 10. The product is extracted into dichloromethane and the dichloromethane is filtered and concentrated on the rotary evaporator. The residue is chromatographed on silica gel with 2% methanol and chloroform to give 5-(dimethylaminomethyl)-6-phenyl-3(2H)-pyridazinone.

Quellen und Nachweise

ORD-Eintrag
ord-5eea3dd4f326447993d6903d09da2737
Quelldatensatz
uspto-grants-1983_09
Patentnummer
US04404203

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