[EN] ZWITTERIONIC COMPOUNDS USEFUL AS CATALYSTS FOR ESTERIFICATION REACTIONS AND PROCESSES FOR THEIR PRODUCTION<br/>[FR] COMPOSÉS ZWITTERIONS UTILES EN TANT QUE CATALYSEURS POUR DES RÉACTIONS D'ESTÉRIFICATION ET LES PROCÉDÉS POUR LEUR PRODUCTION
申请人:ECOSYNTH BVBA
公开号:WO2012168458A1
公开(公告)日:2012-12-13
The present invention relates to zwitterionic compounds which are useful as catalysts for the preparation of organic esters. In particular, the present invention relates to sulfonic acid compounds, such as arenesulfonic acid compounds, including a nitrogen atom in their structure and zwitterionic forms thereof, being useful as catalysts for esterification reactions. The present invention also relates to processes for making such compounds. The present invention also relates to esterification processes catalysed by such zwitterionic compounds. In particular, the present invention relates to processes for the preparation of organic esters wherein a zwitterionic catalyst may be recycled and re-used a significant number of times without losing its catalytic activity and/or selectivity.