| abstract |
Catalyst containing a nickel (0) complex with a ligend of the formula (I) DOLLAR AY.1 · -E · 1 · -XE · 2 · -Y · 2 · (I) DOLLAR A in which DOLLAR AX stands for arylene or heteroarylene , where the arylene or heteroarylene group carries one, two, three or more substituents selected from alkyl, cycloalkyl, aryl, alkoxy, cycloalkyloxy, acyl, aryloxy, halogen, trifluoromethyl, nitro, cyano, carboxyl or NZ · 1 · Z · 2 · where Z · 1 · and Z · 2 · can be the same or different and stand for alkyl, cycloalkyl or aryl, where the arylene or heteroarylene group can be fused once or twice with cycloalkyl, aryl, heterocycloalkyl and / or heteroaryl, where the cycloalkyl, aryl, heterocycloalkyl or heteroaryl groups have one, two or three substituents selected from alkyl, cycloalkyl, aryl, alkoxy, cycloalkyloxy, acyl, aryloxy, halogen, trifluoromethyl, nitro, cyano, carboxyl or NZ · 3 · Z · 4 · can wear, where Z · 3 · and Z · 4 · the same or different en can be and represent alkyl, cycloalkyl or aryl, DOLLAR AE · 1 ·, E · 2 · independently of one another represents O or NZ · 5 ·, where Z · 5 · represents alkyl, aryl, heteroaryl or SiZ · 6 · Z · 7 · Z · 8 · is where the alkyl, aryl or heteroaryl groups are one, two or three of the substituents selected from alkyl, cycloalkyl, aryl, alkoxy, cycloalkyloxy, acyl, aryloxy, halogen, trifluoromethyl, nitro, cyano, carboxyl or NZ · 9 · Z · 10 ·, where Z · 9 · and Z · 10 · can be the same or different and stand for alkyl, cycloalkyl or aryl, and where Z · 6 ·, ... |