Catalyst system containing Ni(0) for hydrocyanation
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United States of America Patent
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-
Mar 18, 2008
Grant Date -
Sep 9, 2004
app pub date -
Jul 16, 2002
filing date -
Jul 27, 2001
priority date (Note) -
In Force
status (Latency Note)
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Abstract
A system comprising a) Ni(0) b) from 4 to 10 mol per mol of Ni(0) in a) of a compound (I) of the formula P(X.sup.1R.sup.1)(X.sup.2R.sup.2)(X.sup.3R.sup.3) (I) where X.sup.1, X.sup.2, X.sup.3 are each, independently of one another, oxygen or a single bond, R.sup.1, R.sup.2, R.sup.3 are, independently of one another, identical or different organic radicals and c) from 1 to 4 mol per mol of Ni(0) in a) of a compound (II) of the formula ##STR00001## where X.sup.11, X.sup.12, X.sup.13 X.sup.21, X.sup.22, X.sup.23 are each, independently of one another, oxygen or a single bond, R.sup.11, R.sup.12 are identical or different, individual or bridged organic radicals, R.sup.21, R.sup.22 are identical or different, individual or bridged organic radicals and Y is a bridging group is suitable as catalyst for preparing mixtures of monoolefinic C.sub.5 mononitriles having nonconjugated C.dbd.C and C.dbd.N bonds by hydrocyanation of a 1,3-butadiene-containing hydrocarbon mixture and for preparing a dinitrile by hydrocyanation of a mixture of monoolefinic C.sub.5 mononitriles having nonconjugated C.dbd.C and C.dbd.N bonds.
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