| 摘要 |
PURPOSE:An oxygen-containing gas is brought into contact with a reaction system containing an aryldialkylmethane in the presence of a catalyst of a transition metal compound and an aqueous alkali of a specific concentration to produce the titled compound efficiently in high selectivity and yield. CONSTITUTION:A transition metal compound as a catalyst and an aqueous caustic alkali of 20-35% concentration are added to the reaction system containing an aryldialkylmethane of the formula (X is H, halogen, alkyl, alkoxy; n is 1-3; R<1> and R<2> are lower alkyl such as methyl) such as cumene or chlorocumene and a gas containing oxygen is brought into contact with the above mixture at 90-130 deg.C and normal pressure to effect oxidation, thus producing the objective compound. As a transition metal compound, is cited a salt of a metal that can be in 2 or more different stable valencies, such as a compound of Ni, Co, Fe, Cr, Ag, or V, preferably a naphthenate or acetate. USE:Synthetic intermediate of drugs and farm chemicals. |
