ES354911A1 - Procedure for the preparation of 1,4-dihalogenantraquinonas. (Machine-translation by Google Translate, not legally binding)
- Google Patents
Procedure for the preparation of 1,4-dihalogenantraquinonas. (Machine-translation by Google Translate, not legally binding)
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
BASF Schweiz AG
Original Assignee
Ciba Geigy AG
Ciba 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 CH826867Aexternal-prioritypatent/CH487822A/en
Application filed by Ciba Geigy AG, Ciba AGfiledCriticalCiba Geigy AG
Publication of ES354911A1publicationCriticalpatent/ES354911A1/en
Organic Low-Molecular-Weight Compounds And Preparation Thereof
(AREA)
Abstract
Process for the preparation of 1,4-dihalogenanthraquinones, and in particular of 1,4-dichloro-anthraquinone, characterized in that in the first stage leuco-quinizarin is treated with a halogenating agent, until 6 halogen atoms have been taken up in the molecule, and undergo hydrolysis, in the second stage, the resulting hexahalogenated derivative. (Machine-translation by Google Translate, not legally binding)
ES354911A1967-06-121968-06-11Procedure for the preparation of 1,4-dihalogenantraquinonas. (Machine-translation by Google Translate, not legally binding)
ExpiredES354911A1
(en)
A procedure for the preparation of a 1,2 alpha-methylen -6,7 alpha-dihalometilen-20-espirox-4-eno 3-oxygenate. (Machine-translation by Google Translate, not legally binding)
Procedure for the obtaining of 2-dimethylaminethanol salts - hemisuccinicas of methyled 2,6-dioxopurines. (Machine-translation by Google Translate, not legally binding)
Procedure for the preparation of a new derivative of pirazolidine-hexametilenimina with therapeutic properties. (Machine-translation by Google Translate, not legally binding)