Diazopropane → HCID 13517200, Verbindung

Reaktionsgleichung

[N+:1](=[CH:3][CH2:4][CH3:5])=[N-].[Cl:6][C:7]1[CH:12]=[CH:11][C:10]([S:13][C:14]2[S:19][C:18](=[S:20])N[C:16](=[O:21])[N:15]=2)=[CH:9][CH:8]=1>CCOCC.O1CCCC1>[CH2:3]([N:1]1[C:16](=[O:21])[N:15]=[C:14]([S:13][C:10]2[CH:11]=[CH:12][C:7]([Cl:6])=[CH:8][CH:9]=2)[S:19][C:18]1=[S:20])[CH2:4][CH3:5]

Komponenten

Versuchsvorschrift

A solution of 7.7 g of diazopropane in ether is added in portions to a solution of 28.8 g of 2,3-dihydro-6-(4-chlorophenylthio)-2-thioxo-4H-1,3,5-thiadiazin-4-one in 250 ml of tetrahydrofuran at 22° C. The solvent is distilled off, the residue is taken up in a small amount of methanol, and the precipitate is filtered off under suction, washed with methanol and dried. 21.9 g of 3-propyl-6-(4-chlorophenylthio)-2-thioxo-1,3,5-thiadiazin-4-one are obtained in the form of yellow crystals of melting point 151°-152° C.