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Bayer AG
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Bayer AG
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Publication of ES291032A1publicationCriticalpatent/ES291032A1/en
Nitrogen And Oxygen Or Sulfur-Condensed Heterocyclic Ring Systems
(AREA)
Abstract
"Process for the production of dyes", characterized in that combinations of the general formula are reduced ** (See formula) ** where R stands for hydrogen or for an aralkyl, cycloalkyl or aryl alkyl residue, with indole derivatives of the general formula ** (See formula) ** where R1 is by hydrogen or a lower alkyl group and R2 by an alkyl or lower alkoxy group or by an aryl moiety and where the R, R1 and R2 moieties and the aromatic rings may contain non-ionogenic substituents, and in case of using components of naftolactam, where R means hydrogen, the dyes contained in the form of the salts in the corresponding bases are transformed, if necessary, by treating them with quaternary means. (Machine-translation by Google Translate, not legally binding)
ES0291032A1962-08-231963-08-23Procedure for the manufacture of colorants (Machine-translation by Google Translate, not legally binding)
ExpiredES291032A1
(en)
Procedure for obtaining new 1,2,3-triazolic fluorescent derivatives of 3-phenyl-cumarine (Machine-translation by Google Translate, not legally binding)
A procedure for the preparation of amidas of N-alkyl piperidin monocarboxylic acid and N-alkyl pirrolidin alpha-monocarboxylic acid (Machine-translation by Google Translate, not legally binding)