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Elementary Steps in Catalytic 1‐Alkyne Coupling to Substituted Cyclooctatetraenes
Author(s) -
Diercks Rainer,
Stamp Lutz,
Kopf Jürgen,
tom Dieck Heindirk
Publication year - 1984
Publication title -
angewandte chemie international edition in english
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 5.831
H-Index - 550
eISSN - 1521-3773
pISSN - 0570-0833
DOI - 10.1002/anie.198408931
Subject(s) - alkyne , catalysis , bridge (graph theory) , nickel , chemistry , polymer chemistry , coupling (piping) , stereochemistry , medicinal chemistry , materials science , organic chemistry , metallurgy , biology , anatomy
A butadienyl bridge between two nickel atoms , which, in addition, carries N ligands of the diazadiene type, is formed on reaction of mononuclear diazadienenickel complexes with disubstituted acetylenes. The pattern of substitution of the C 4 ‐bridge is the same as that of the octatetraene formed from the same educts. These findings are a further indication of binuclear catalysts in the formation of COT from alkynes.