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Organic Low-Molecular-Weight Compounds And Preparation Thereof
(AREA)
Abstract
Inventia se refera la un procedeu pentru prepararea p-nitro-omega-acetamidoacetofenonei prin hidroliza selectiva a 1-acetamido-2,2-dimetoxi-2-(4-nitrofenil)-etanului si anume ca reactia are lor întrun amestec tampon de acid acetic, acetat de sodiu, la temperatura de 58...60 degree C, urmata de acidulare cu un acid mineral si mentinerea înca o ora la aceasi temepratura, timp în care p-nitro-omega-acetamidoacetofenona se separa prin cristalizare.
RO105439A1981-10-011981-10-01Procedeu pentru prepararea p-nitro-omega-acetamidoacetofenonei
RO82905B1
(ro)
Procedimento continuo di ottenimento di allumina pura apartire da un liquor acido proveniente dall'attacco clorosolforico di un minerale alluminoso e di purificazione del liquor liberato dall'allumina.
Theophylline-7-acetic acid ester of d,l-trans-sobrerol having mucosecretolytic-fluidizing and antibronchospastic activity, a process for its preparation and pharmaceutical compositions thereof