Syntheses of Novel Planar Metacyclophanes by Claisen-Schmidt Condensation and Thermal Stabilities of Their Photoisomers

Ken      Ishikawa; Hiroshi      Katagiri; Kazuo      Tsujimoto; Yoshihiro      Ohba

doi:10.2174/157017812803901971

Abstract

The novel metacyclophanes with chalcone moieties were synthesized by Claisen-Schmidt condensation. These α,β-unsaturated ketones were photoisomerized from the all-trans configuration to the partial trans configuration by 365 nm light irradiation, and then, these cis photoisomers were thermally reversed

Keywords: α, β-unsaturated ketone, Aldol reaction, chalcone, Claisen-Schmidt condensation, metacyclophane, photoisomerization

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Letters in Organic Chemistry

Title:Syntheses of Novel Planar Metacyclophanes by Claisen-Schmidt Condensation and Thermal Stabilities of Their Photoisomers

Volume: 9 Issue: 10

Author(s): Ken Ishikawa, Hiroshi Katagiri, Kazuo Tsujimoto and Yoshihiro Ohba

Affiliation:

Keywords: α, β-unsaturated ketone, Aldol reaction, chalcone, Claisen-Schmidt condensation, metacyclophane, photoisomerization

Abstract: The novel metacyclophanes with chalcone moieties were synthesized by Claisen-Schmidt condensation. These α,β-unsaturated ketones were photoisomerized from the all-trans configuration to the partial trans configuration by 365 nm light irradiation, and then, these cis photoisomers were thermally reversed

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Ishikawa Ken, Katagiri Hiroshi, Tsujimoto Kazuo and Ohba Yoshihiro, Syntheses of Novel Planar Metacyclophanes by Claisen-Schmidt Condensation and Thermal Stabilities of Their Photoisomers, Letters in Organic Chemistry 2012; 9 (10) . https://dx.doi.org/10.2174/157017812803901971