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Application filed by Institutul De Cercetari Chimico-FarmaceuticefiledCriticalInstitutul De Cercetari Chimico-Farmaceutice
Priority to RO121702ApriorityCriticalpatent/RO93320B1/en
Publication of RO93320A2publicationCriticalpatent/RO93320A2/en
Publication of RO93320B1publicationCriticalpatent/RO93320B1/en
Agricultural Chemicals And Associated Chemicals
(AREA)
Abstract
Inventia se refera la un procedeu de preparare a 5,5-dimetilhidantoinei prin tratarea la temperatura camerei si presiune atmosferica a cianurii de sodiu cu acetona carbonat de amoniu si apa, constând în aceea ca se îndeparteaza sarurile anorganice, amestecul de reactie se concentreaza si se neutralizeaza cu acid clorhidric.The invention relates to a process for the preparation of 5,5-dimethylhydantoin by treatment at room temperature and atmospheric pressure of sodium cyanide with ammonium carbonate and water, consisting in removing the inorganic salts, the reaction mixture being concentrated and neutralize with hydrochloric acid.
RO121702A1986-01-031986-01-03Process for preparing 5,5-dimethylhydantoine
RO93320B1
(en)
Process for the preparation of beta-hydroxybutyric acid and its salts by means of hydrolysis of oligomers of beta-hydroxybutyric acid in a basic medium