Topic
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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Abstract: Preparation of new kinds of norbornene episulfides by use of arenethiosulfenyl chlorides has been investigated. Norbornene and 7,7-dimethylnorbornene afforded exo and endo epithio derivatives, respectively. Norbornadiene gave a mixture of exo and endo monoepithio compounds. The structure of the episulfides and of the intermediately formed adducts of the norbornenes with the chlorides is discussed on the basis of nmr spectra.
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27 Oct 1987TL;DR: In this article, a diisocyanate norbornyl derivatives are used for crosslinking active hydrogen compounds, which are useful for crosslink active hydrogen compound cross-linking.
Abstract: Novel bicyclic alkyl dicarbamates are prepared from norbornadiene and other simple starting materials, and these are subsequently thermally cracked to novel diisocyanate norbornyl derivatives, which are, among others, useful for crosslinking active hydrogen compounds.
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TL;DR: According to photoelectronic spectral data, introduction of substituents into the 2 and 7 positions of norbornadiene does not result in any significant changes in the interaction energies of the double bonds as mentioned in this paper.
Abstract: 1.
Dimerization and codimerization of 2- and 7-substituted norbornadienes in the presence of low-valent iron complexes gives new mono- and 5(6), 11-disubstituted exo-trans-exopentacyclo [8.2.1.14,702,90.3,8]tetradeca-5,11-dienes in high yields.
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According to photoelectronic spectral data, introduction of substituents into the 2- and 7-positions of norbornadiene does not result in any significant changes in the interaction energies of the double bonds.
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TL;DR: A family of terminal alkyne dicobalthexacarbonyl complexes bearing groups with a range of electron-withdrawing abilities has been synthesized.
Abstract: A family of terminal alkyne dicobalthexacarbonyl complexes bearing groups with a range of electron-withdrawing abilities has been synthesized. After submitting these complexes to the intermolecular Pauson–Khand reaction with norbornadiene, electron-deficient substrates afforded up to 26% of the unexpected endo -cyclopentenone.
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TL;DR: In this paper, a systematic study of the synthesis of norbornadiene from dicyclopentadiene and acetylene under pressure has been carried out and the effects of various operating parameters on product distribution have been determined.
Abstract: The dimers and trimers of norbornadiene have a unique polycyclic strained structure and are of great practical value. A systematic study of the synthesis of norbornadiene from dicyclopentadiene and acetylene under pressure has been carried out. The effects of various operating parameters on product distribution have been determined. The optimum conditions for the synthesis are: (i) temperature, 290°C; (ii) residence period, 16 min; (iii) mole ratio of C2H2:N2: dicyclopentadiene, 1:1:0.4; and (iv) initial pressure at ambient temperature, 8.894 × 105 nm−2. Under these conditions the conversion of norbornadiene is 41.74% on the basis of dicyclopentadiene consumed. The loss of dicyclopentadiene due to polymerisation has been estimated from its balance.
A kinetic study of the synthesis from cyclopentadiene has also been carried out.