| 摘要 |
2-Amino benzoic acid derivative(I) and its salts are prepared from cpmpd.(II) by means of conversion of diazonium salt with sulfuric acid or copper, where R5 = F, Cl, Br, cyano, or hydroxy gp.; R6,R7 = N-alkyl-cyclohexyl amino gp., N-alkylphenyl amino, Nalkyl-benzyl amino, C6-C12 cyclic alkylene amino, C1-C4 alkyl, C1-C3 alkoxy, piperydino, morpholine, thiomorpholino, piperazino, aza-bicycloalkyl, C6-C9 1,4-dioxa-8-aza-spiro-alkane, pyrolidino, or tetrahydro- pyridino gp.; and W = carboxy, aminocarbonyl, cyano, or C2-C4 alkoxy carbonyl.
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