- Preparation method of 4-(2-methylallyl)-1,2-benzenediol
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The invention discloses a preparation method of 4-(2-methylallyl)-1,2-benzenediol. The preparation method comprises the following steps: taking gamma-aluminum oxide as a catalyst for catalyzing 2-(2-methyl allyloxy) phenol so as to continuously carry out Claisen rearrangement and Cope rearrangement reaction in an organic solvent, and generating the 4-(2-methylallyl)-1,2-benzenediol. The preparation method of the 4-(2-methylallyl)-1,2-benzenediol, disclosed by the invention, has the advantages of high yield, high purity, simpleness in operation, convenience for recycling and reusing the catalyst, low cost, environment protecting and the like.
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Paragraph 0023; 0024
(2017/08/29)
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- PURIFICATION PROCESS FOR PARA-METHALLYLPYROCATECHOL
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The present invention relates to a process for the purification of para-methallylpyrocatechol and to the preparation of flavor and fragrance compounds from para-methallylpyrocatechol.
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Page/Page column 2; 3; 7-8
(2013/02/28)
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