- Intramolecular cycloaddition of fluorinated 1,3,4-oxadiazoles to dienes
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Cycloaddition reactions of fluorinated 1,3,4-oxadiazoles with conjugated and unconjugated dienes was studied. The reactions resulted in the formation of products of double cycloaddition (7-oxabicycloheptane type compounds), along with products of intramolecular cycloaddition (oxatricyclic and oxatetracyclic compounds). The structure of 4-(trifluoromethyl)-2-ethoxycarbonyl-1,6-dimethyl-3-oxatricyclo [2.2.1.02,6]heptane was confirmed by single crystal X-ray diffraction analysis.
- Vasil'ev,Romanov,Bazhenov,Lyssenko,Zatonsky
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p. 740 - 747
(2008/03/13)
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- A Competition between 1,3-Dipolar Cycloaddition and Substitution of Trifluoroacetonitrile Oxide
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Trifluoroacetonitrile oxide reacted with conjugated olefins such as styrenes, indenes, and acyclic conjugated dienes to give not only the cycloadduct but also its linear isomeric oxime.Methyl of phenyl group attached to the unsaturated carbon of the dipol
- Tanaka, Kiyoshi,Masuda, Hideyuki,Mitsuhashi, Keiryo
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p. 2061 - 2065
(2007/10/02)
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