Asymmetric codimerization of cyclohexa-1,3-diene with ethylene catalysed by chiral aminophosphine-nickel complexes
- 1 January 1980
- journal article
- research article
- Published by Royal Society of Chemistry (RSC) in Journal of the Chemical Society, Chemical Communications
- No. 20,p. 937-939
- https://doi.org/10.1039/c39800000937
Abstract
The asymmetric codimerization of cyclohexa-1,3-diene with ethylene is catalysed by the Ni(cyclo-octa-1,5-diene)2–AlEt2Cl–L system where L are chiral aminophosphines; optimization of this catalytic system (–70°C; L/Ni = 10) gives (+)-(S)-3-vinylcyclohexene with 73·5% optical purity in 87% chemical yield when (–)-(R)-N-methyl-N-(1-phenylethylamino)diphenyl-phosphine is used.Keywords
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