C.sub.6 compounds of the formula (I)
E--CH.sub.2 --CH.dbd.CH--CH.sub.2 --E.sup.1 (I)
are prepared by self metathesis or cross metathesis of compounds of the
formulae (II) and/or (III)
R--CH.dbd.CH--CH.sub.2 --E (II)
R.sup.1 --CH.dbd.CH--CH.sub.2 --E.sup.1 (III)
where
E, E.sup.1 are independently --CHO, --COOH, --COOR.sup.2, --C(O)NR.sup.3
R.sup.4, --CN,
R, R.sup.1 are independently H, C.sub.1-12 -alkyl, C.sub.6-12 -aryl or
C.sub.7-13 -alkylaryl and
R.sup.2, R.sup.3, R.sup.4 are independently H, C.sub.1-12 -alkyl,
C.sub.7-13 -aralkyl,
in the presence of a homogeneous catalyst comprising ruthenium compounds or
ruthenium complexes.
I residui C.sub.6 della formula (i) la E -- CH.sub.2 -- CH.dbd.CH -- CH.sub.2 -- E.sup.1 (i) sono preparati tramite il metathesis di auto o il metathesis della traversa dei residui delle formule (ii) e/o (iii) R -- CH.dbd.CH -- CH.sub.2 --E (ii) R.sup.1 -- CH.dbd.CH -- CH.sub.2 -- E.sup.1 (iii) dove la E, E.sup.1 รจ indipendentemente -- cho, -- cooh, -- COOR.sup.2, -- C(O)NR.sup.3 R.sup.4, --CN, la R, R.sup.1 sono indipendentemente H, C.sub.1-12 - alchile, C.sub.6-12 - arile o C.sub.7-13 - alkylaryl e R.sup.2, R.sup.3, R.sup.4 sono indipendentemente H, C.sub.1-12 - alchile, C.sub.7-13 - il aralkyl, in presenza omogeneo di un catalizzatore
