- Preparation method of 2-methoxy-5-acetamido-N, N-diacetoxyethyl aniline
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The invention provides a preparation method of 2-methoxy-5-acetamido-N, N-diacetoxyethyl aniline. The method comprises the following steps: (1) carrying out hydroxylation reaction on o-methoxy m-acetamido aniline and ethylene oxide to obtain a hydroxylate 2-methoxy-5-acetamido-N, N-dihydroxyethyl aniline; and step 2), carrying out an esterification reaction on the hydroxylate 2-methoxy-5-acetamido-N, N-dihydroxyethyl aniline and acetic anhydride and/or acetic acid, so as to obtain an esterified compound. The 2-methoxy-5-acetamido-N, N-diacetoxyethyl aniline prepared by the method disclosed by the invention is low in cost and simple in steps, and the obtained product is high in yield, high in purity and more suitable for workshop production.
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Paragraph 0055; 0057-0058; 0060-0061; 0063; 0067; 0069; ...
(2021/10/27)
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- Synthesis and Spectral Characterization of Blue Dyes of the Benzene Series
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53 Donor-acceptor substituted azo dyes of the benzene series were prepared by diazonium-coupling reactions (1a-s) or halogen-cyanide exchange (->2a-x, 3a-j).Described are the preparation of the amines 4a-m and the coupling compounds 5a-t and the procedure of diazotizing and coupling.The colouristic and spectroscopic data show that compounds of the general formula 1 are excellent brilliant blue azo dyes usefull for dyeing polyester material.
- Thiel, W.,Mayer, R.,Jauer, E.-A.,Modrow, H.,Dost, H.
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p. 497 - 514
(2007/10/02)
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