Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Leo Pharma AS
Original Assignee
Leo Pharmaceutical Products Ltd AS
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Filing date
Publication date
Application filed by Leo Pharmaceutical Products Ltd ASfiledCriticalLeo Pharmaceutical Products Ltd AS
Priority to ES0230634ApriorityCriticalpatent/ES230634A1/es
Publication of ES230634A1publicationCriticalpatent/ES230634A1/es
Organic Low-Molecular-Weight Compounds And Preparation Thereof
(AREA)
Abstract
Método de esterificación del ácido 2-hidroxi-4-amino-benzóico con fenoles, caracterizado porque el ácido 2-hidroxi-4-amino-benzóico se calienta con el fenol en cuestión, preferentemente a una temperatura entre 80º y 120ºC en presencia de pentóxido fosfórico o de un ácido polifosfórico que contiene más del 75% y preferentemente más del 80% de P2O5.
ES0230634A1956-08-281956-08-28UN MÉTODO DE ESTERIFICACIoN DEL áCIDO 2-HIDROXI-4-AMINO-BENZOICO CON FENOLES.
ExpiredES230634A1
(es)