PURPOSE: To obtain the titled colorless and transparent compound useful as an intermediate for synthetic fibers, etc., in high yield without causing gelling phenomenon of a reaction mixture, by reacting dimethyl phthalates with benzyl alcohol in the presence of a specific catalyst while heating.
CONSTITUTION: Dimethyl phthalates and benzyl alcohol, preferably in an amount of 1W25mol based on 1mol dimethyl phthalates are heated using a catalyst consisting of a titanium compound and/or tin compound to afford the aimed compound. The heating temperature is 140W250°C, preferably 160W230°C. A titanium compound, e.g. α-type titanium hydroxide, ammonium titanyl oxalate, etc., and tin compound, e.g. stannous acetate, etc., are cited as specific examples of the above-mentioned catalyst. The amount thereof used is 0.001W1.0pt.wt. expressed in terms of titanium or tin atom based on 100pts.wt. dimethyl phthalates.
MIYAMOTO TAKEHISA
HASHIMOTO YUKIO
| JPS5331639A | 1978-03-25 |
Next Patent: PRODUCTION OF DIPHENYLALKENE DERIVATIVE