Thionyl Chloride → N-(beta-Chloroethyl)-N-methyl-N'-(2trifluoromethyl-1,3,4-thiadiazol-5-yl)urea
Reaktionsgleichung
O[CH2:2][CH2:3][N:4]([CH3:17])[C:5]([NH:7][C:8]1[S:12][C:11]([C:13]([F:16])([F:15])[F:14])=[N:10][N:9]=1)=[O:6].S(Cl)([Cl:20])=O>C1C=CC=CC=1>[Cl:20][CH2:2][CH2:3][N:4]([CH3:17])[C:5]([NH:7][C:8]1[S:12][C:11]([C:13]([F:16])([F:15])[F:14])=[N:10][N:9]=1)=[O:6]Komponenten
4
Versuchsvorschrift
The N-(β-hydroxyethyl)-N-methyl-N'-(2-trifluoromethyl-1,3,4-thiadiazol-5-yl)urea prepared in Example 6, thionyl chloride (5 ml) and benzene (50 ml) were charged into a glass reaction vessel equipped with a mechanical stirrer, thermometer and reflux condenser. The reaction mixture was heated at reflux with stirring, for a period of about one-half hour. After this time the benzene and unreacted thionyl chloride were stripped from the reaction mixture under reduced pressure to yield the desired product N-(β-chloroethyl)-N-methyl-N'-(2-trifluoromethyl-1,3,4-thiaidazol-5-yl)urea as a solid residue.