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
Application filed by Ciba Geigy AG, Ciba AGfiledCriticalCiba Geigy AG
Priority to ES0231337ApriorityCriticalpatent/ES231337A2/en
Publication of ES231337A2publicationCriticalpatent/ES231337A2/en
Improvements in the process for obtaining amides, object of the main patent, characterized in that the salts of esters of aminocarbonic acid with a free amino group, in which this group is separated by at least two carbon atoms of the estercarbonyl group and that in the alcoholic component they present an electron-withdrawing substituent, they are condensed with themselves by treatment with basic agents and, if desired, in the polyamides obtained with protected amino groups they are transformed into free amino groups. (Machine-translation by Google Translate, not legally binding)
ES0231337A1956-10-151956-10-15New procedure for the obtaining of amidas (Machine-translation by Google Translate, not legally binding)
ExpiredES231337A2
(en)
Improvements introduced in patent number 232318, procedure for the obtaining of new amidas of alpha - amino - beta - oxicarboxylic acids (Machine-translation by Google Translate, not legally binding)
Industrial procedure for the preparation of trimethylthenrinitroamin of hexamethylenetramine and nitric acid concentrated in excess, which is recovered directly at high concentration. (Machine-translation by Google Translate, not legally binding)
Procedure for the preparation of new cationactive and provided combinations of amido groups (Machine-translation by Google Translate, not legally binding)