| abstract |
PURPOSE: To obtain o-isopropylphenol expected to be useful as a raw material for agricultural chemicals, in high yield, by reacting a phenolic compound with propylene at a specific molar ratio within a specific temperature range in the presence of γ-alumina catalyst in gaseous state under normal pressure. n CONSTITUTION: o-Isopropylphenol can be produced by the isopropylation reaction of (A) 1mol of the phenolic compound of formula (R 1 and R 2 are H or 1W2C alkyl excluding 2,6-disubstituted derivative) (e.g. phenol, cresol, xylenol, ethylphenol, etc.) with (B) 1W10mol, especially 1W3mol of propylene in the presence of γ-alumina catalyst under normal pressure in gaseous state at 150W250°C, especially 170W240°C. n EFFECT: The product can be supplied to the market in large quantities at a low cost. n COPYRIGHT: (C)1987,JPO&Japio |