Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Novartis AG
Original Assignee
Ciba Geigy AG
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Priority claimed from CH1777170Aexternal-prioritypatent/CH557861A/en
Application filed by Ciba Geigy AGfiledCriticalCiba Geigy AG
Publication of ES397409A1publicationCriticalpatent/ES397409A1/en
Heterocyclic Carbon Compounds Containing A Hetero Ring Having Oxygen Or Sulfur
(AREA)
Nitrogen And Oxygen Or Sulfur-Condensed Heterocyclic Ring Systems
(AREA)
Abstract
Process for the preparation of perinone dyes, of the general formula ** (formula) ** wherein a means a carbocyclic or heterocyclic aromatic radical, in which the two nitrogen atoms meet each other in ortho or peri position x means a hydrogen atom or a water-insoluble substituent, for example a halogen atom, a hydroxyl, alkoxy, phenoxy, nitro or acylaminic group. (Machine-translation by Google Translate, not legally binding)
ES397409A1970-12-011971-11-27Procedure for the preparation of perinone colorants. (Machine-translation by Google Translate, not legally binding)
ExpiredES397409A1
(en)
Procedure for the preparation of derivatives of alpha-nicotinoil-beta- (fenilsustituido) etileno. (Machine-translation by Google Translate, not legally binding)