Diazadiene als Steuerliganden in der Homogenen Katalyse, VIII [1] Katalytische Trimerisierung substituierter Acetylencarbonsäureester und Isolierung eines Acetylendicarbonsäureester-Diazadien-Nickel(0)-Addukts / Diazadienes as Controlling Ligands in Homogeneous Catalysis, VIII [1] Catalytic Trimerization of Substituted Acetylene Carbonic Acid Esters and Isolation of an Acetylene Dicarbonic Acid Ester Diazadiene Nickel(0) Adduct
Nickel(0) complexes of diazadienes (dad = RN = CR' - CR ' = NR ) catalyse the trimerization of esters of 2-butynoic acid, phenylpropynoic acid and butynedioic acid to give hexasubstituted benzenes with the unsymmetrical esters 2 as the main products. A primary adduct 7 of acetylene dicarbo...
| Published in: | Zeitschrift für Naturforschung B |
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| Main Authors: | , |
| Format: | Article in Journal/Newspaper |
| Language: | English |
| Published: |
Walter de Gruyter GmbH
1984
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| Subjects: | |
| Online Access: | http://dx.doi.org/10.1515/znb-1984-0210 https://www.degruyter.com/view/journals/znb/39/2/article-p180.xml https://www.degruyter.com/document/doi/10.1515/znb-1984-0210/xml https://www.degruyter.com/document/doi/10.1515/znb-1984-0210/pdf |
| Summary: | Nickel(0) complexes of diazadienes (dad = RN = CR' - CR ' = NR ) catalyse the trimerization of esters of 2-butynoic acid, phenylpropynoic acid and butynedioic acid to give hexasubstituted benzenes with the unsymmetrical esters 2 as the main products. A primary adduct 7 of acetylene dicarboxylic acid dimethyl ester of the type (dad)Ni(alkyne) could be isolated and characterized by 1 H NMR, IR and UV spectroscopy. According to their characteristic CT absorption. 7 and its analogues are shown to persist during catalysis as an active species |
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