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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/es
Procedimiento para la preparación de 3-aril-alkilo inferior-2-pirrolidonas, el cual comprende el convertir un aril-alkilo inferior-acetonitrilo en una sal de metal alcalino, tratar dicha sal con óxido de etileno, ciclizar el alfa-aril-alfa-alkilo inferior-gamma-hidroxi-butironitrilo obtenido con ácido y someter la alfa-aril-alfa-alkilo inferior-gamma-hidroxi-butirolactona formada a la acción de amoniaco.
ES0236729A1956-07-251957-07-24PROCEDIMIENTO PARA LA PREPARACIoN DE 3-ARIL-3-ALKILO INFERIOR-2-PIRROLIDONA
ExpiredES236729A1
(es)
PROCEDIMIENTO INDUSTRIAL DE PREPARACIoN DE LA TRIMETILENTRINITROAMINA DE HEXAMETILENTETRAMINA Y áCIDO NiTRICO CONCENTRADO EN EXCESO, QUE ES RECUPERADO DIRECTAMENTE A ALTA CONCENTRACION.