Dimerization process

Details Dimerization process Dimerization process

1974-12-30

1976-05-04

Brust, Joseph P.

Chemistry of carbon compounds

Miscellaneous organic carbon compounds

C-metal

C07C12000

Patent

active

039548317

ABSTRACT:
Acrylonitrile is dimerized by reaction in the presence of a catalyst consisting essentially of (a) at least one metal compound of the formula M(X).sub.n wherein M is Zn or Co, X is an anion derived from an alkyl or aryl sulfonic acid or from a carboxylic acid containing at least two carbon atoms which is substituted by at least one of the groups, --F, --Cl, --Br, --I and --CN in the .alpha.-C-position relative to the acid group and n is a number equal to the valence of the metal M divided by the number of acid equivalents of X and (b) at least one nitrogen-containing Lewis Base which is (1) a tertiary monoamine of the formula ##EQU1## wherein R.sup.1, R.sup.2, and R.sup.3 are the same or different and each is an alkyl, cycloalkyl, benzyl or aryl radical; or (2) a tertiary di- or poly-functional amine which contains at least two Lewis Base nitrogen groups separated from each other by at least one carbon atom, and which are (a) N-disubstituted amino groups wherein each N-substituent is the same or different and is an alkyl, cycloalkyl, benzyl or aryl radical, or (b) N-heterocyclic groups containing 3 to 20 carbon atoms; or (3) an N-substituted heterocyclic amine containing 3 to 20 carbon atoms in the heterocyclic ring wherein the N-substituent is an alkyl, cycloalkyl, benzyl or aryl radical.

REFERENCES:
patent: 3484475 (1969-12-01), Cornforth et al.
patent: 3641106 (1972-02-01), Cornforth et al.
patent: 3733351 (1973-05-01), Watanabe et al.

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