Nickel-catalyzed highly chemoselective cocyclotrimerization of arynes with allenes: a novel method for 10-methylene-9,10-dihydrophenanthrenesElectronic supplementary information (ESI) available: synthesis and characterization data of compounds 3. See http://www.rsc.org/suppdata/cc/b3/b315795d/
- 4 February 2004
- journal article
- research article
- Published by Royal Society of Chemistry (RSC) in Chemical Communications
- No. 5,p. 532-533
- https://doi.org/10.1039/b315795d
Abstract
The NiBr2(dppe)–Zn system effectively catalyzes the [2+2+2] cocyclotrimerization of arynes with allenes, leading to 10-methylene-9,10-dihydrophenanthrenes in moderate to good yields. The cocyclotrimerization is highly selective with only the internal double bond of the allenes being involved in the reaction.Keywords
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