公开(公告)号：US20240059650A1

公开(公告)日：2024-02-22

申请号：US18256992

申请日：2021-12-13

Applicant: DSM IP ASSETS B.V. ,  UNIVERSITÄT BASEL

Inventor： Werner BONRATH ,  Thomas BUCHHOLZ ,  Thomas NETSCHER ,  Jan SCHUETZ ,  Christof SPARR

IPC: C07C407/00

CPC classification number: C07C407/00 ,  C07C2601/16

Abstract: The present invention relates to the photooxidation of 2,4,6-trimethyl-phenol to yield 4-hydroperoxy-2,4,6-trimethylcyclohexa-2,5-dien-1-one using methylene blue as photosensitizer in a solvent mixture of water and alcohols using light of the high wavelength range of the visible spectrum. This process allows 5 obtaining 4-hydroxy-2,4,6-trimethylcyclohexa-2,5-dien-1-one and 2,3,5-trimethyl-hydroquinone in high yields and selectivity from 2,4,6-trimethylphenol.