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2 197 469

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IPC

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Application

2000117320/04, 2000-06-28

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Start date

2000-06-28

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Actual filing date

2000-06-28

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Published

2003-01-27

(72)

Inventor

Spivak A.Ju.Odinokov V.N.Emel'Janova G.A.Makhamatkhanov R.A.

(73)

Holder

Institut Neftekhimii I Kataliza An Rb I Unts Ran

METHOD OF PREPARING ISOPRENOIDE DERIVATIVES OF 2,3,5-TRIMETHYL-1,4- BENZOQUINONE Russian patent published in 2003 - IPC

Abstract RU 2197469 C2

FIELD: organic synthesis. SUBSTANCE: biologically active isoprenoide derivatives of 2,3,5-trimethyl-1,4- benzoquinone are prepared by acid-catalyzed condensation reaction of trimethylhydroquinone with isoprenoide allyl alcohols using as catalyst zeolite-containing aluminosilicate ZSK-5. Reaction is carried out at refluxing for 3-5 h in hydrocarbon solvents at trimethylhydroquinone-to-allyl alcohol molar ratio 1: (1.1-2) and trimethylhydroquinone-to- catalyst weight ratio 1:(1-2), after which catalyst is filtered off, filtrate evaporated, mixed with silica gel, and held in the air at 50-70 C for approximately 0.5 h. Desired product is then isolated with the aid column chromatography on silica gel. EFFECT: extended choice of biologically active compounds. 2 cl, 1 tbl, 3 ex

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RU 2 197 469 C2

Authors

Spivak A.Ju.

Odinokov V.N.

Emel'Janova G.A.

Makhamatkhanov R.A.

Dates

2003-01-27—Published

2000-06-28—Filed

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