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Fordonal SA
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Fordonal SA
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Application filed by Fordonal SAfiledCriticalFordonal SA
Priority to ES539140ApriorityCriticalpatent/ES539140A0/en
Publication of ES8601863A1publicationCriticalpatent/ES8601863A1/en
Publication of ES539140A0publicationCriticalpatent/ES539140A0/en
Organic Low-Molecular-Weight Compounds And Preparation Thereof
(AREA)
Abstract
The process comprises reaction of oxalic acid ethyl monoester with ethyl chloroformate in the presence of triethyl amine. This gives a mixed anhydride of formula H3C-CH2-O-CO-O-CO-COOH2-CH3. This is then reacted with a phenyl diamine of formula (II) where R is a lower alkoxy or alkyl group or nitrile and R' is H or Cl2, tetrahydrofurane, dioxane and/or methylene chloride at -10 to +25 deg.C.
ES539140A1984-12-281984-12-28
PROCEDURE FOR PREPARING A 1,3-PHENYLENDIAMINE DERIVATIVE
GrantedES539140A0
(en)