15872-28-3Relevant articles and documents
Transition metal-catalyzed [4 + 2 + 2] cycloadditions of bicyclo[2.2.1]hepta-2,5-dienes (Norbornadienes) and bicyclo[2.2.2]octa-2,5-dienes
Chen,Kiattansakul,Ma,Snyder
, p. 6932 - 6942 (2001)
The transition-metal-catalyzed [4 + 2 + 2] cycloadditions of norbornadienes, bicyclo[2.2.2]octa-2,5-diene, and benzobarrelene with 1,3-butadienes proceed in excellent yields using cobalt-based catalytic systems. Two key distinctions between these [4 + 2 + 2] cycloadditions and the corresponding transition-metal-catalyzed [2 + 2 +2] reactions of norbornadiene are the requirement of a bimetal catalytic system with a bisphosphine ligand for the former and exclusive regioselectivity in the [4 + 2 + 2] reaction of 2-substituted norbornadienes to produce 1-substituted adducts. These distinctions may indicate two distinct mechanisms for the [4 + 2 + 2] and [2 + 2 + 2] reactions.
Ring Opening Metathesis Polymerization of Bicyclic α,β-Unsaturated Anhydrides for Ready-to-be-grafted Polymers Having Tailored pH-Responsive Degradability
Kim, Heejin,Kim, Sungwhan,Kang, Sunyoung,Song, Youngjun,Shin, Suyong,Lee, Seonju,Kang, Minji,Nam, So Hee,Lee, Yan
, p. 12468 - 12472 (2018)
Polymers having α,β-unsaturated anhydrides as repeating units were synthesized by ring opening metathesis polymerization (ROMP). The anhydride moieties were ready-to-be-grafted with amines to form acid-labile cis-α,β-unsaturated acid amide linkages. The pH-responsive reversible de-grafting can be controlled by changing the intramolecular accessibility between acid and amide groups. The alendronate-grafted ROMP polymers showed distinct pH-dependent cytotoxicity according to the anhydride structures.
Photochemical isomerization of norbornadiene-containing polytriazoles obtained by click chemistry polyaddition
Miladi, Imen Abdelhedi,Mudraboyina, Bhanu Prakash,Oueslati, Ahmed,Drockenmuller, Eric,Romdhane, Hatem Ben
, p. 223 - 231 (2014)
Polyesters and polyethers containing norbornadiene (NBD) and 1,2,3-triazole units in the main chain are prepared by step growth polymerization of diester or diether NBD-based dialkynes with different aromatic diazides using copper-catalyzed azide-alkyne c
Structure and NMR spectra of bicyclo[2.2.1]hepta-2,5-diene-2,3-dicarboxylic acid and its Anhydride
Aitken, R. Alan,Fotherby, Fiona M.,Slawin, Alexandra M.Z.
, (2021/10/07)
Two of the three published sets of 1H and 13C NMR data for bicyclo[2.2.1]hepta-2,5-diene-2,3-dicarboxylic anhydride have been found to actually be those of the corresponding diacid. The NMR spectroscopic distinction between these two compounds is clarified and 1JC–H values are reported for the anhydride, the diacid and a related diester. The X-ray structure of the diacid has been determined and features chains of molecules involving both intra- and inter-molecular hydrogen bonding.
Energy storage material based on 2,5-norbornadiene derivative and preparation method thereof
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Paragraph 0036-0038; 0041-0043; 0046-0048, (2018/12/13)
The invention discloses an energy storage material based on a 2,5-norbornadiene derivative and a preparation method thereof. An esterification method is used for preparing an ortho grafted bisazo benzene 2,5-norbornadiene derivative; two azobenzene groups are introduced at 2,5-norbornadiene in an ortho manner, so that norbornadiene is obviously subjected to Einstein shift; the photon yield is effectively improved. 2,5-norbornadiene and the azobenzene groups are combined, so that the heat storage energy density can be effectively improved; the storage energy is increased. The material has excellent optical performance and is hopeful to be applied in the fields of light and heat conversion and energy storage.
