ES206645A1 - Procedure for obtaining hydrazid from paraaminosalicylic acid (Machine-translation by Google Translate, not legally binding)
- Google Patents
Procedure for obtaining hydrazid from paraaminosalicylic acid (Machine-translation by Google Translate, not legally binding)
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DANIEL MANGRANE S A
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DANIEL MANGRANE S A
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Organic Low-Molecular-Weight Compounds And Preparation Thereof
(AREA)
Abstract
Process for obtaining para-aminosalicylic acid hydrazide consisting essentially of adding to a 40% aqueous solution of hydrazine hydrate, para-aminosalicylic acid ethyl ester in an approximate proportion of 1 to 3 moles respectively by stirring and heating the assembly in a bath the mixture was then boiled to achieve complete dissolution of the hydrazine hydrate after which the water in the reaction mass was evaporated in vacuo and at low temperature to dryness by recrystallizing the solid product several times in hot ethyl alcohol and finally obtaining the para-hydrazide. Aminosalicylic in the form of solid crystalline structure body ** (see formula) **: (Machine-translation by Google Translate, not legally binding)
ES206645A1952-11-291952-11-29Procedure for obtaining hydrazid from paraaminosalicylic acid (Machine-translation by Google Translate, not legally binding)
ExpiredES206645A1
(en)
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