83489-74-1Relevant articles and documents
Synthesis method of 3,3',5,5'-tetraalkyl-4,4'-diphenoquinone
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Paragraph 0084; 0085; 0086, (2017/08/29)
The invention provides a synthesis method of 3,3',5,5'-tetraalkyl-4,4'-diphenoquinone. 2,6-dialkyl phenol is dissolved in a reaction solvent; a copper ion loaded hydrophobic modified resin catalyst and an oxidizing agent are added; reaction is performed for 2 to 8h at 40 DEG C to 80 DEG C; filtering is performed to obtain filter liquid; then, the filter liquid is distilled; distillation residues are cleaned by alkanol; after the drying, the 3,3',5,5'-tetraalkyl-4,4'-diphenoquinone is obtained. The synthesis method is simple; after being recovered, the catalyst can be repeatedly used; the reaction selectivity is high; the yield of the 3,3',5,5'-tetraalkyl-4,4'-diphenoquinone can reach 95 percent or higher; no by-product of polyphenyl ether is generated; the copper ion content is smaller than 5mu g/g; the product purity is greater than or equal to 99.5 percent.