Preparation method of 2,3,5-trimethylhydroquinone dicarbonate

The invention provides a preparation method of 2,3,5-trimethylhydroquinone dicarbonate (TMHQ-DA), which is implemented by carrying out rearrangement reaction on 2,6,6-trimethylcyclohexyl-2-ene-1,4-dione (KIP) and an acylating agent in the presence of a magnetic solid acid catalyst. The technique has...

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Hauptverfasser: DONG YANFENG, ZHANG TAO, HUA WEIQI, CUI QIAN, HE GUANGWEN, WANG PENG, CONG XIN, LI YUAN, GUO JINZI, CHEN HAIBO
Format: Patent
Sprache:eng
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Zusammenfassung:The invention provides a preparation method of 2,3,5-trimethylhydroquinone dicarbonate (TMHQ-DA), which is implemented by carrying out rearrangement reaction on 2,6,6-trimethylcyclohexyl-2-ene-1,4-dione (KIP) and an acylating agent in the presence of a magnetic solid acid catalyst. The technique has the advantages of high recoverability and favorable reutilization effect of the catalyst, environment friendliness, low equipment corrosivity and the like. Compared with the traditional solid acid catalyst, the catalyst has the advantages of high specific area, favorable dispersity, high activity, high selectivity and the like.