Preparative Organic Chemistry
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ChemInform Abstract: Hydrogen Transfer Reactions. Part 12. Ziegler-Nickel Catalysts for the Hydrogen Transfer.
First published: January 2, 1990
Abstract
Catalysts prepared from Ni(acac)2 and AlEt3 show high catalytic activity in the hydrogen transfer between dihydroarenes, but hardly any isomerization and H/D scrambling is observed.
ChemInform Abstract
Catalysts prepared from Ni(acac)2 and AlEt3 show high catalytic activity in the hydrogen transfer between dihydroarenes, but hardly any isomerization and H/D scrambling is observed. The active form of the catalyst is produced only in the presence of the starting material. Kinetic experiments, especially those concerning the introduction periods and the inhibition, are indicative of a complex reaction mechanism. The first hydrogen is preferentially abstracted from the 2-position, the second one with complete cis stereoselectivity.
