| 摘要 |
PURPOSE:To prepare the titled compound useful as an antioxidant, in high yield, in one step, by using a carboxylic acid and a bisphenol as raw materials, and reacting with a halogenating agent in the presence of a dehydrohalogenation agent. CONSTITUTION:The titled compound is prepared by reacting (A) a carboxylic acid of formula I (R is 1-3C alkyl, 2-4C alkenyl, phenyl or 2-phenylethenyl) with bisphenol of formula II (R' is 1-4C alkyl) in the presence of a dehydrohalogenation agent such as triethylamine, dimethylaniline, etc. using a halogenating agent such as phosphorus oxychloride, o-toluenesulfonyl chloride, etc. at -20-+150 deg.C, preferably 20-100 deg.C. The molar ratio of the compound of formula I to the compound of formula II is preferably (0.9-1.2):1.
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