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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, the rotation constants and quartic centrifugal distortion constants of norbornadiene were fitted from the measured transition frequencies, and the accidentally small dipole moment of μ = μ c = 0.05866(9) D has been determined from Stark effect measurements.
Abstract: Pure rotational transitions of norbornadiene and norbornadiene-2- 13 C have been observed by pulsed microwave Fourier transform (MWFT) spectroscopy. The assignment of the spectra has been assisted by MWFT Stark experiments. Rotational constants and quartic centrifugal distortion constants have been fitted from the measured transition frequencies. The accidentally small dipole moment of μ = μ c = 0.05866(9) D has been determined from Stark effect measurements. The rotational constants of both isotopic species have been used to calculate the substitution coordinates of the olefinic carbon.
1 citations
Journal Article•
TL;DR: In this article, the effects of catalyst site accessibility on the activities of supported olefin hydrogenation catalysts have been assessed utilizing the complexes [Rh(nbd)L 2 ][NO 3 ] 3 [nbd=η 4 -norbornadiene; L=Ph 2 P(CH 2 ) n PMe 3 + ; n=2, 3, 6 or 10] tethered to a cation exchange resin via the tetraalkylphosphonium moieties of the co-ordinated ligands.
Abstract: The effects of catalyst site accessibility on the activities of supported olefin hydrogenation catalysts have been assessed utilizing the complexes [Rh(nbd)L 2 ][NO 3 ] 3 [nbd=η 4 -norbornadiene; L=Ph 2 P(CH 2 ) n PMe 3 + ; n=2, 3, 6 or 10] tethered to a cation-exchange resin via the tetraalkylphosphonium moieties of the co-ordinated ligands.
1 citations
TL;DR: In this paper, the authors examined the selective functionalization of norbornadiene through nitrile oxide 1,3-dipolar cycloaddition/ring-opening metathesis (ROM)/cross-metathesis protocols.
Abstract: This work presents an examination of the selective functionalization of norbornadiene through nitrile oxide 1,3-dipolar cycloaddition/ring-opening metathesis (ROM)/cross-metathesis (CM) protocols. Functionalization of commercially available norbornadiene provided novel bicyclic scaffolds with multiple stereogenic centers. The synthesis involved selective cycloadditions, with subsequent ROM of the formed cycloalkene-fused isoxazoline scaffolds and selective CM by chemodifferentiation of the olefin bonds of the resulting alkenylated derivatives. Various experimental conditions were applied for the CM transformations with the goal of exploring substrate and steric effects, catalyst influence and chemodifferentiation of the olefin bonds furnishing the corresponding functionalized, fluorine-containing isoxazoline derivatives.
1 citations
Journal Article•
1 citations
TL;DR: In this paper, it was shown that when NBD is heated (60~ h, toluene) in the presence of the catalyst system Co (acac) 2 -l,2-bis (diphenylphosphino)ethane Et2AICI (I : 1.5 :I 5) a mixture of polycyclic hydrocarbons is formed in93% yield; it consists of dimers I, II, and Ill (73, 9, and 9%) and the new trimer IV, the content of which in the cat
Abstract: It was established that when NBD is heated (60~ h, toluene) in the presence of the catalyst system Co (acac) 2 -l,2-bis (diphenylphosphino)ethane Et2AICI (I : 1.5 :I 5) a mixture of polycyclic hydrocarbons is formed in93% yield; it consists of dimers I, II, and Ill (73, 9, and 9%) and the new trimer IV, the content of which in the catalysate is -~9%. When NBD is copolymerized with I (NBD :I=3:1) with the same catalyst, the yield of IV is increased to 22%.
1 citations