Dark blue esterification liquid and preparation method thereof
The invention provides dark blue esterifying liquid and a preparation method thereof. The preparation method comprises the following steps: a pretreatment step: dissolving 2-amino-4-acetamino anisole in a solvent to obtain a pretreatment solution; a hydroxylation reaction step: carrying out a hydrox...
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Format: | Patent |
Sprache: | chi ; eng |
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