Process for preparing di-n-propylacetonitrile

Details Process for preparing di-n-propylacetonitrile Process for preparing di-n-propylacetonitrile

C - Chemistry, Metallurgy

07

C

252/129

C07C 255/04 (2006.01) B01J 23/02 (2006.01) B01J 23/04 (2006.01)

Patent

CA 1316166

ABSTRACT OF THE DISCLOSURE: The invention relates to a process for the preparation of di-n-propylacetonitrile, according to a process consisting in heating N-(1-propyl-n-butyl)formamide to a temperature of between 350°C and 550°C and in the absence of oxygen, in the presence of a catalyst consisting of a silica impregnated with 0.1 to 10% by weight of alkali metal cations. The invention also relates to a catalyst consisting of a silica impregnated with 0.1 to 10% by weight of alkali metal cations. The process is useful to overcome drawbacks usually noted with prior art processes concerning ethylenic by-products.

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