公开(公告)号：US20200377436A1

公开(公告)日：2020-12-03

申请号：US16998163

申请日：2020-08-20

Applicant: Symrise AG

Inventor： Erich Dilk ,  Detlef Geisel ,  Stefan Lambrecht

IPC: C07C29/48 ,  C07C29/132 ,  C07C407/00

Abstract: The invention discloses a process for the oxidation of limonene, comprising the reaction of limonene with hydrogen peroxide in the presence of a catalyst containing atoms and/or ions of at least one metal, selected from the group consisting of molybdenum, tungsten, scandium, vanadium, titanium, lanthanum, zirconium, praseodymium, neodymium, samarium, europium, terbium, dysprosium, erbium or ytterbium, characterised in that the molecular weight of the catalyst is less than 2,000 g/mol and that the reaction is performed at a pH value of more than 7.5.

公开(公告)号：US20180155262A1

公开(公告)日：2018-06-07

申请号：US15575076

申请日：2016-05-19

Applicant: Symrise AG

Inventor： Erich Dilk ,  Detlef Geisel ,  Stefan Lambrecht

IPC: C07C29/48

CPC classification number: C07C29/48 ,  C07C29/132 ,  C07C407/00 ,  C07C2601/14 ,  C07C2601/16 ,  C07C409/14 ,  C07C35/17 ,  C07C35/18

Abstract: The invention discloses a process for the oxidation of limonene, comprising the reaction of limonene with hydrogen peroxide in the presence of a catalyst containing atoms and/or ions of at least one metal, selected from the group consisting of molybdenum, tungsten, scandium, vanadium, titanium, lanthanum, zirconium, praseodymium, neodymium, samarium, europium, terbium, dysprosium, erbium or ytterbium, characterised in that the molecular weight of the catalyst is less than 2,000 g/mol and that the reaction is performed at a pH value of more than 7.5.