59499-36-4Relevant academic research and scientific papers
A 4 - bromo -3 - methyl -2 - butene -1 - ethoxylate ester preparation method (by machine translation)
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Paragraph 0023-0025, (2019/10/01)
The invention discloses a 4 - bromo - 3 - methyl - 2 - butene - 1 - ethoxylate ester preparation method, comprises the following steps: the isoprene and water is continuously pumped into the filled with bromo succinimide of the 1st [...] reaction is performed in a reactor, by the 1st rectifying device to obtain the rectification product 4 - bromo - 3 - methyl - 2 - butene - 1 - ol and 1 - bromo - 2 - methyl - 3 - butene - 2 - ol; the rectification product and of acetic anhydride mixture is pumped into the filled with solid acid catalyst in the reactor 2nd esterification rearrangement reaction, to obtain a reaction solution; the reaction liquid is distilled under reduced pressure to recover the acetic acid and unreacted second grade acid anhydride, 2nd rectifying device obtained by 4 - bromo - 3 - methyl - 2 - butene - 1 - ethoxylate ester. The invention of 4 - bromo - 3 - methyl - 2 - butene - 1 - ethoxylate ester preparation method the product yield is high, it is easy to realize continuous, large-scale production. (by machine translation)
