Diels-alder process

C - Chemistry – Metallurgy – 07 – C

Patent

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Details

C07C 13/42 (2006.01) C07C 2/50 (2006.01)

Patent

CA 2127692

An improved process for the production of 1:1 molar adducts of 4- vinylcyclohexene and cyclopentadiene, primarily 5-(3-cyclohexen-1-yl)-2-norbornene, comprises contacting 4-vinylcyclohexene and dicyclopentadiene at elevated temperature in a suitable reactor, separating the resulting mixture of adducts into light product comprising predominately the 1:1 polar adduct and a heavy product (bottoms product) comprising higher adducts and cyclopentadiene oligomers, and reacting the heavy pro- duct with additional 4-vinylcyclohexene to produce additional 1:1 molar adducts.

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