ES236729A1 - Procedure for the preparation of 3-aril-3-alkilo inferior-2-pirrolidona (Machine-translation by Google Translate, not legally binding)
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Procedure for the preparation of 3-aril-3-alkilo inferior-2-pirrolidona (Machine-translation by Google Translate, not legally binding)
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F Hoffmann La Roche AG
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F Hoffmann La Roche AG
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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)
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)