公开(公告)号：JPS55154966A

公开(公告)日：1980-12-02

申请号：JP6157179

申请日：1979-05-21

Applicant: MITSUI TOATSU CHEMICALS

Inventor： HASHIMOTO MASAO ,  MATSUDA FUJIO ,  KOGURE YASUO

IPC: C07D493/04 ,  B01J23/22 ,  C07D307/89

Abstract: PURPOSE:To prepare the title compound useful as an intermediate of a heat-resistant resin, from an easily available raw material, directly, in one step, and in high yield, by the gas phase oxidation of pentaalkylphenol, 2,3,5,6-tetraalkylphenol, etc. CONSTITUTION:The title compound is prepared by contacting a compound of formula (R1,4 are H or alkyl; R2,3,5,6 are alkyl; wherein alkyl means 1-4C alkyl, halogenated alkyl, hydroxyalkyl, and acetyl) with oxygen or oxygen-containing gas in the presence of a gas-phase oxidation catalyst, pref. vanadium oxide which may be incorporated with a compound of phosphorus or lithium, etc. The contact may be carried out by a fixed bed or a fluidized bed. The molar ratio of the raw material to oxygen is 1 to 100-10,000, and the reaction temperature is 300-650 deg.C.