Journal
BULLETIN OF THE CHEMICAL SOCIETY OF JAPAN
Volume 81, Issue 7, Pages 885-893Publisher
CHEMICAL SOC JAPAN
DOI: 10.1246/bcsj.81.885
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Funding
- Asahi Glass Foundation
- Ministry of Education, Culture. Sports, Science and Technology, Japan [19205013]
- Japan Society for the Promotion of Science for Young Scientists
- Grants-in-Aid for Scientific Research [19205013] Funding Source: KAKEN
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In the presence of a nickel(0) catalyst, cyclobutanones reacted with diynes to produce bicyclic eight-membered ring ketones. Cyclobutanones acted its it C4 unit in the formal [4+2+2]-type annulation reaction, which proceeded through a ring-expansion of it spirocyclic seven-membered oxanickelacycle to a nine-membered nickelacycle via beta-carbon elimination. A similar annulation reaction was also examined with enynes.
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