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Priority to RO106354ApriorityCriticalpatent/RO83732B1/ro
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Publication of RO83732B1publicationCriticalpatent/RO83732B1/ro
Organic Low-Molecular-Weight Compounds And Preparation Thereof
(AREA)
Abstract
Inventia se refera la un derivat de 1,1'-oxi-bis-(4N-benzilamido)-benzen, cu structura corespunzatoare formulei: (vezi formula) substanta solida cristalina, avînd punctul de topire de 102...104 degree C, care se obtine prin aceea ca acidul fenilacetic se supune condensarii directe cu 1,1'-oxi-bis(2-clor-4-amino-2'-etoxi)-benzen, în cantitati stoichiometrice, în mediu de clorbenzen, în prezenta triclorurii de fosfor, la temperatura de reflux.
RO106354A1982-01-191982-01-19Derivat de 1, 1'-oxi-bis-(4n-benzilamido)-benzen si procedeu pentru preparea acestuia
RO83732B1
(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".
Procede de preparation de l'acide n,n-dimethylamino-methane-diphosphonique a partir de n,n-dimethylformamide, d'acide phosphoreux et d'oxychlorure de phosphore