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Reactions of Substituted Alkynes at a Conformationally Rigid (Olefin)cobalt Fragment
Author(s) -
Okuda Jun,
Zimmermann Karl Heinz,
Herdtweck Eberhardt
Publication year - 1991
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.199104301
Subject(s) - alkyne , cobalt , olefin fiber , chemistry , stereochemistry , fragment (logic) , polymer chemistry , catalysis , organic chemistry , computer science , programming language
The cobalt‐induced alkyne trimerization is absent when the coordinatively unsaturated cobalt complex fragment contains a fixed double bond as in 1 , which can raise the activation barriers for the individual steps substantially. Depending on the alkyne substituents, several products can be formed such as 2 (R = SiMe 3 ) and 3.
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