Process for making tricyclodecenyl esters

C - Chemistry – Metallurgy – 07 – C

Patent

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C07C 67/04 (2006.01) C07C 69/013 (2006.01)

Patent

CA 2655786

A process for making tricyclodecenyl esters is disclosed. A C2-C4 carboxylic acid and a dicyclopentadiene react in the presence of triflic acid under conditions effective to produce the ester. The process gives tricyclodecenyl esters in good yield while avoiding the need to use a large excess of the carboxylic acid. The process efficiently provides fragrance-quality tricyclodecenyl esters from technical grade dicyclopentadienes and/or recycled carboxylic acids.

L'invention concerne un procédé destiné à la fabrication d'esters de tricyclodécényle, consistant à faire réagir de l'acide carboxylique C2-C4 et un dicyclopentadiène en présence d'acide trifluorométhanesulfonique dans des conditions permettant la production de l'ester. Le procédé permet de produire des esters de tricyclodécényle avec un bon rendement, sans qu'il faille utiliser de grandes quantités d'acide carboxylique. Le procédé permet plus précisément d'obtenir efficacement des esters de tricyclodécényle pouvant être utilisés dans des parfums à partir de dicyclopentadiènes de qualité industrielle et/ou d'acides carboxyliques recyclés

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