Anthracene And Anthraquinone
Anthracene And Anthraquinone
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, D. R. P. 234, 518.
THE AMINOANTHRAQUINONES 213 the N-anthraquinonyl sulphonamides as a rule having no tinctorial properties. 1 The acylaminoanthraquinones are very readily obtained from the amino compound by heating it with the acid chloride 2 or with the free acid 3 in some inert solvent of high boiling point such as nitrobenzene or naphthalene. The acid chloride, of course, reacts most readily, sodium acetate being added in order to neutralise the hydrochloric acid liberated. When preparing... acetyl derivatives it is often advantageous to dissolve the amino compound in concentrated sulphuric acid or oleum containing 10-25 P er cent - of sulphur trioxide and then to add acetic anhydride, glacial acetic acid or anhydrous sodium acetate. By this means both primary and secondary compounds, including dianthraquinonyl- amines, can be acetylated, although in some cases acetylation only takes place with difficulty when less drastic methods are employed. 4 In some cases an ester or an amide of the acid can be used for inserting the acyl group, 5 but in other cases the reaction takes a different course.
What to read after Anthracene And Anthraquinone?
You can find similar books in the "Read Also" column, or choose other free books by E De Barry Edward De Barry Barnett to read onlineMoreLess
To quickly assess the difficulty of the text, read a short excerpt:
, D. R. P. 234, 518.
THE AMINOANTHRAQUINONES 213 the N-anthraquinonyl sulphonamides as a rule having no tinctorial properties. 1 The acylaminoanthraquinones are very readily obtained from the amino compound by heating it with the acid chloride 2 or with the free acid 3 in some inert solvent of high boiling point such as nitrobenzene or naphthalene. The acid chloride, of course, reacts most readily, sodium acetate being added in order to neutralise the hydrochloric acid liberated. When preparing... acetyl derivatives it is often advantageous to dissolve the amino compound in concentrated sulphuric acid or oleum containing 10-25 P er cent - of sulphur trioxide and then to add acetic anhydride, glacial acetic acid or anhydrous sodium acetate. By this means both primary and secondary compounds, including dianthraquinonyl- amines, can be acetylated, although in some cases acetylation only takes place with difficulty when less drastic methods are employed. 4 In some cases an ester or an amide of the acid can be used for inserting the acyl group, 5 but in other cases the reaction takes a different course.
What to read after Anthracene And Anthraquinone?
You can find similar books in the "Read Also" column, or choose other free books by E De Barry Edward De Barry Barnett to read onlineMoreLess
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