ES236729A1 - Procedure for the preparation of 3-aril-3-alkilo inferior-2-pirrolidona (Machine-translation by Google Translate, not legally binding)
- Google Patents
Procedure for the preparation of 3-aril-3-alkilo inferior-2-pirrolidona (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.)
F Hoffmann La Roche AG
Original Assignee
F Hoffmann La Roche 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 F Hoffmann La Roche AGfiledCriticalF Hoffmann La Roche AG
Publication of ES236729A1publicationCriticalpatent/ES236729A1/en
Process for the preparation of 3-aryl-lower alkyl-2-pyrrolidones, which comprises converting an aryl-lower alkyl-acetonitrile into an alkali metal salt, treating said salt with ethylene oxide, cyclizing the alpha-aryl-alpha - lower alkyl-gamma-hydroxy-butyronitrile obtained with acid and subjecting the alpha-aryl-alpha-lower alkyl-gamma-hydroxy-butyrolactone formed to the action of ammonia. (Machine-translation by Google Translate, not legally binding)
ES0236729A1956-07-251957-07-24Procedure for the preparation of 3-aril-3-alkilo inferior-2-pirrolidona (Machine-translation by Google Translate, not legally binding)
ExpiredES236729A1
(en)
A procedure for the preparation of 3; 17-dioles of the ciclopentanopolihidrofenantreno series (Machine-translation by Google Translate, not legally binding)
Procedure for the preparation of new aqueous solutions of adrenocrome monosemicarbazone. (Machine-translation by Google Translate, not legally binding)
A method to improve the textile treatment of fibers and artificial threads derived from polyesters (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)