Journal of Organometallic Chemistry p. C23 - C29 (1991)
Update date:2022-08-17
Topics:
Hoberg, Heinz
Ballesteros, Alfredo
Sigan, Andrei
Jegat, Corine
Baerhausen, Dieter
Milchereit, Armin
Nickela-compounds with a five-membered ring, 4, are formed on Ni0 from CO2 and alkenes in the presence of the heterodifunctional ligand (cyclo-C6H11)2PCH2-CH2-2-pyridyl (2).A ring contraction occurs on addition of a promotor, such as BeCl2 or on heating.The greater reactivity of the nickela-complex with a four-membered ring, 6, can be used in the former reactions with CO2, CO or CH2=CH2.Such a sequence of reactions can be employed for the catalytic reaction of ethene with acrylic anilide on a (C6H11)3P/Ni0 system.
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