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Norbornadiene
About: Norbornadiene is a research topic. Over the lifetime, 2389 publications have been published within this topic receiving 38603 citations.
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TL;DR: In this article, a kinetic study of norbornadiene photoisornerizalion sensitized with acetophenone, using ethanol as the solvent, is presented, showing that photoisomerization leads to quadricyclane, and no byproducts of the reaction were detected.
Abstract: One of the best photochemical storage systems of solar energy is the interconversion between norbornadiene and quadricyclane. A kinetic study of norbornadiene photoisornerizalion sensitized with acetophenone, using ethanol as the solvent is presented. For the temperature range studied (25–55 °C), photoisomerization leads to quadricyclane, and no byproducts of the reaction were detected. Results show that a temperature increase leads to a slight decrease in the reaction rate.
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TL;DR: In this paper, a photochemical 6π-electrocyclic oxidative aromatization reaction was used to give the corresponding phenanthrene compounds in satisfactory yield in the case of norbornene derivatives and the molecular structures and conformational stabilities of these atropisomers were examined by X-ray crystallography and variable temperature NMR studies.
1 citations
TL;DR: The reaction of the amine (CF 3 ) 2 NBr in solvent Me 2 O or Et 2 O at −78 °C in the dark gives the same products in low yield, together with 3-bromo-5-alkoxynortricyclene ( exo, endo - and exo, exo-, exo -isomers) in high yield.
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TL;DR: 3,3-Dialkyl(cycloalkyl)cyclopropenes react with norbornene and norbornadiene at −20°C in the presence of complexes of CuCl with (PhO)3P or Ph3P exclusively by [2 + 2]-cycloaddition, giving the corresponding exo,trans-tetracyclo decanes in yields of 60–94%, the tricyclohexane cyclodimers being obtained.
Abstract: 3,3-Dialkyl(cycloalkyl)cyclopropenes react with norbornene and norbornadiene at −20°C in the presence of complexes of CuCl with (PhO)3P or Ph3P exclusively by [2 + 2]-cycloaddition, giving the corresponding exo,trans-tetracyclo[5.2.1.02,6.03,5]decanes (or decenes) in yields of 60–94%, the tricyclohexane cyclodimers being obtained in yields of 5–25%.
1 citations