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Priority to RO117918ApriorityCriticalpatent/RO91669B1/ro
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Publication of RO91669B1publicationCriticalpatent/RO91669B1/ro
Organic Low-Molecular-Weight Compounds And Preparation Thereof
(AREA)
Abstract
Inventie descrie un procedeu pentru sinteza azodicarboxamidei prin reactia hidrazodicarboxamidei cu bicromatul de sodiu, în prezenta de acizi halogenati ca: acidul bromhidric sau sarurile acestuia ce metalele alcaline cum sînt: bromura de potasiu sibromura de sodiu, în prezenta de acid sulfuric, folosind anumite rapoarte molare între reactanti si lucrînd la anumite temperaturi si timp de contact. Se obtin randamente mari în azodicarboxamida, raportate la hidrazodicarboxamida.
RO117918A1985-03-111985-03-11Procedeu pentru sinteza azdicarboxamidei
RO91669B1
(ro)
"procedimiento para preparar derivados del acido 2-(4-hidroxi-2-oxopirrolidin-acetico:intermediarios de aplicacion exclusiva en dicho procedimiento y la preparacion de dichos intermediarios".
Process for the preparation of a water-soluble salt of poly- alpha-hydroxyacrylic acid or a beta-alkyl derivative thereof whose beta-alkyl substituent has 1,2 or 3 carbon atoms