W. Richter
Feb 1, 1986
Citations
0
Influential Citations
7
Citations
Journal
Journal of Molecular Catalysis
Abstract
Abstract P-methyl-substituted 1,3,2-oxazaphospholidine and 1,3,2-diazaphospholidine modified nickel(0) catalysts (2, 4, 6) in toluene dimerize butadiene to give predominantly linear products such as 1,3,6-octatriene. Ni(0) catalysts combined with the P-phenyl- or P-t-butyl-substituted oxazaphospholidine or diazaphospholidine ligands 1, 3 and 5 yield, in contrast, cyclic dimers. The above catalysts (2, 4, 6) also isomerize 1,3,6-octatrienes to 2,4,6-octatrienes. Acyclic phosphonic acid diamide-modified nickel(0) catalysts (7, 8) give cyclic dimers.