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US5196573A Process for the preparation of sulfonated anthranilic acids 失效
磺化邻氨基苯甲酸的制备方法

Process for the preparation of sulfonated anthranilic acids
摘要:
A process for the preparation of 4-sulfonated anthranilic acids by sulfonation of ortho-nitrotoluenes with chlorosulfonic acid or oleum followed by oxidation of the methyl group and, finally, reduction of the nitro group.
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