- Method for synthesizing 2,4,6-tribromophenyl allyl ether
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The invention relates to a method for synthesizing 2,4,6-tribromophenyl allyl ether, solving the technical problems of the prior art, including the complicated synthesis process, the slow etherification reaction progress, serious hydrolysis of chloropropene, low product yield, deep product color and low purity affecting flame retardant performance. The method for synthesizing the 2,4,6-tribromophenyl allyl ether includes the following steps in sequence: 1) adding a first catalyst into an organic solvent of phenol, adding a brominating agent at the temperature of 15-20 DEG C, increasing the temperature to 25-30 DEG C and preserving the heat to obtain tribromophenol, and adding the tribromophenol into an ethanol solution of sodium ethoxide to obtain an ethanol solution of sodium tribromophenolate; 2) adding a dispersant and a second catalyst into the ethanol solution of the sodium tribromophenolate prepared in the step 1), dropwise adding an ethanol solution of the chloropropene, and preserving the heat until reaction completion to obtain the 2,4,6-tribromophenyl allyl ether. The method is widely applied to the synthesis field of flame retardants.
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Page/Page column 4-6
(2019/01/16)
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- A SIMPLE AND EFFICIENT METHOD FOR PREPARATION OF ALLYL ARYL ETHERS VIA POLYMER SUPPORTED REAGENTS
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Allyl aryl ethers were synthesized in excellent yields and in a state of high purity by reaction of polymer-supported phenoxide ions with allyl bromide in ethanol at room temperature.
- Salunkhe, M.M.,Thorat, M.T.,Mane, R. B.,Sande, A.R.,Wadgaonkar, P.P.
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p. 691 - 694
(2007/10/02)
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