Process of producing isopropylnaphthols

Details Process of producing isopropylnaphthols Process of producing isopropylnaphthols

C - Chemistry, Metallurgy

07

C

260/615.9

C07C 37/08 (2006.01) C07C 37/84 (2006.01) C07C 39/14 (2006.01) C07C 409/12 (2006.01)

Patent

CA 2003780

Disclosed is a process of producing isopropylnaphthols by oxidizing diisopropylnaphthalenes with molecular oxygen in a liquid phase to form a reaction mixture which contains therein diisopropylnaphthalene monohydroperoxides and then decomposing the monohydroperoxides with acids to isopropylnaphthols. An organic layer is separated from the reaction mixture, lower aliphatic alcohols of 1-4 carbons are added to the organic layer, and the diisopropylnaphthalenes are crystallized while allowing the diisopropylnaphthalene monohydroperoxides to remain dissolved in the lower aliphatic alcohols, thereby to separate the mono-hydroperoxides from the diisopropylnaphthalenes. The isopropylnaphthols may be crystallized from aromatic hydrocarbons of 6-12 carbons. The isopropylnaphthols can be produced in high purity and in high yield by this process.

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