Über die katalytische Umwandlung von Olefinen, VIII „Nacktes“ Nickel als Katalysator bei der Umalkylierung von Aluminiumtrialkylen mit α-Olefinen/ The Catalytic Conversion of Olefins, VIII „Naked“-Nickel as a Catalyst for the Transalkylation of Aluminium Trialkyls with α-Olefins

Abstract

Abstract Nickel(0)-olefin complexes such as tris(ethylene)nickel(0) (4), tris(bicycloheptene)nickel(0) (6 ), all-transcyclododecatriene)nickel(0) (26), tris(stilbene)nickel(0) (27) and bis(cyclooctadiene) nickel(0) (23) are highly active homogeneous catalysts for the transalkylation of aluminium trialkyls with α-olefins. After com pletion of the reaction the nickel(O) can be rem oved in the form of Ni(CO)4 by reaction with CO. Characteristic for the catalytic reaction is the formation of olefin-nickel-π-bonds and Ni -C -Al multi-centre-bonds. The mechanism o f the reaction is discussed with the help of m odels.