公开(公告)号：US20170183283A1

公开(公告)日：2017-06-29

申请号：US15313209

申请日：2015-05-20

Applicant: Rhodia Operations

Inventor： Jean-Paul VIDAL ,  Pascal PITIOT

IPC: C07C51/367 ,  C07C59/64

CPC classification number: C07C51/367 ,  C07C51/353 ,  C07C59/64 ,  C07C59/52

Abstract: The process allows the preparation of a p-hydroxymandelic compound, comprising at least one step of condensation of at least one aromatic compound bearing at least one hydroxyl group and whose para position is free, with glyoxylic acid, the condensation reaction being performed in at least one reactor equipped with at least one mixing means, the specific mixing power being between 0.1 kW/m3 and 15 kW/m3. In addition, the invention also relates to a process for preparing a 4-hydroxyaromatic aldehyde by oxidation of this p-hydroxymandelic compound.