| 摘要 |
Alkylesters of N-(5-acyl-1-benzimidazol-2-yl) carbamic acid (I: R = lower alkyl, cycloalkyl, phenylhalophenyl, lower alkylphenyl, etc., R1 = Me, Et) useful as broad spectrum anthelmintic, were prepd. by treating 2-amino-5-acyl-1H-benzimidazoles(II), which were prepd. by treating 4-acyl-1,2-benzendiamine with cyanogenbromide or cyanamide, with alkylisceithiocyanatoformate (III) in inactive solvents as dioxane, tetrahydrofurane, etc.
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