Process for preparation of (+)-p-mentha-2,8-diene-1-ol

Details Process for preparation of (+)-p-mentha-2,8-diene-1-ol Process for preparation of (+)-p-mentha-2,8-diene-1-ol

C - Chemistry, Metallurgy

07

C

C07C 29/10 (2006.01) C07C 29/74 (2006.01)

Patent

CA 2523419

A process for preparing (+)-p-mentha-2,8-diene-1-ol comprising reacting (+)- limonene oxide with at least one amine in the presence of at least one Lewis acid to form amine adduct intermediates. The amine adduct is then oxidized to form an N-oxide that is pyrolized to form (+)-p-mentha-2,8-diene-1-ol.

L'invention pore sur un procédé de préparation de (+)-p-mentha-2,8-diène-1-ol, ce procédé consistant à mette à réagir un oxyde (+)-limonène avec au moins un amine en présence d'au moins un acide de Lewis e façon à former des intermédiaires de produit d'addition d'amine. Le produit d'addition d'amine est ensuite oxydé de façon à former un N-oxyde qui est pyrolysé pour former (+)-p-mentha-2,8-diène-1-ol.

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