3,4-Diaminopyridine → HCID 178503896, Verbindung
Reaktionsgleichung
[NH2:1][C:2]1[CH:3]=[N:4][CH:5]=[CH:6][C:7]=1[NH2:8].[CH3:9][S:10][C:11](SC)=[N:12][C:13]#[N:14]>N1C=CC=CC=1>[CH3:9][S:10][C:11](=[N:12][C:13]#[N:14])[NH:1][C:2]1[CH:3]=[N:4][CH:5]=[CH:6][C:7]=1[NH2:8]Komponenten
4
Edukt 2
Produkt 1
Reagenzien, Katalysatoren, Lösungsmittel 1
Versuchsvorschrift
3,4-Diaminopyridine (4 g, 36.6 mmol) was suspended in anhydrous pyridine (100 ml), and S,S'-dimethyl N-cyanodithioiminocarbonate (8.0 g, 55.0 mmol) was added thereto. The mixture was stirred at room temperature for 4 days. The resulting powder was collected from the reaction mixture by filtration, and washed with ether (100 ml) to obtain crude crystals. The crystals were purified by recrystallization from methanol-ether to obtain 1.91 g of the intended product as a white powder (yield: 58%). On the other hand, the filtrate was concentrated under reduced pressure, and the residue was purified by flash column chromatography (silica gel, eluent: chloroform:methanol=4:1 (v/v)) to obtain 2.8 g of the intended product (total yield: 95%).