Process for preparing 5-ethylidene-2-norbornene

Details Process for preparing 5-ethylidene-2-norbornene Process for preparing 5-ethylidene-2-norbornene

C - Chemistry, Metallurgy

07

C

260/690.7

C07C 13/43 (2006.01) B01J 23/04 (2006.01) C07C 5/25 (2006.01)

Patent

CA 1267161

Abstract: The invention relates to the preparation of 5-ethyl- idene-2-norbornene by the isomerization 5-vinyl-2-norbornene in the presence of a catalyst. The catalyst is a solid base catalyst which is prepared by reacting alumina and an alkali metal hydroxide at a temperature of 200 to 500°C and then reacting the reaction product with an alkali metal at a temperature of 180 to 350°C, or a solid base catalyst which is prepared by reacting a water-containing alumina and an alkali metal in an amount which corresponds to the molar equivalent of the water contained in the alumina at a temperature in the range between the melting point of the alkali metal and 500°C and then reacting the reaction product with additional alkali metal at a temperature of 180 to 350°C. The reaction proceeds with- out the formation of significant amounts of by-product in the presence of a relatively small amount of the catalyst.

516079

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