Journal of the Chemical Society. Perkin transactions I p. 2499 - 2503 (1981)
Update date:2022-08-12
Topics:
Yokoyama, Masataka
Motozawa, Kosei
Kawamura, Ei-ichi
Imamoto, Tsuneo
The reaction of imidazolidine-2-thione (ethylenethiourea) with carbon disulphide in the presence of strong bases was investigated.The use of sodium hydride as base afforded 1,2-bis-<(2-thioxoimidazolidin-1-yl)thiocarboxamido>ethane (6) and 2,3,6,7-tetrahydrodi-imidazo<2,1-b:1,2-e><1,3,5>thiadiazine-5-thione (8).On the other hand, reaction using n-butyl-lithium, followed by methylation, gave a dimethylated compound, methyl 2-methylthio-4,5-dihydroimidazole-1-carbodithioate (11).
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