| 摘要 |
This invention concerns a method of prepg. 2,5-disubstituted benzamide(I ; A = mono- or dialkylamino group or a heterocyclic ring contg. nitrogen, oxygen or sulfur as hetero atoms. A may be a radical having the formula II, R = alkyl, alkylene, m<4, B = 1 ower alkyl or alkylene, n = 1 or 2, X = amino, mono- Ordialkylamino, alkyl, alkylene). Thus, 2,5-disubstituted benzoic acid (III) was reacted with amine [H2N(CH2)nA in the presence of silicontetrachloride to give I.
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