98736-27-7Relevant academic research and scientific papers
Catalytic Isomerisation of Water-Soluble Quadricyclane to Norbornadiene Derivatives Induced by Cobalt-Porphyrin Complexes
Maruyama, Kazuhiro,Tamiaki, Hitoshi
, p. 602 - 606 (2007/10/02)
In an aqueous alkaline solution, the exothermic isomerisation of quadricyclane derivatives to norbornadiene derivatives catalyzed by cobalt-porphyrin complexes was investigated.By catalytic action of cobalt 5,10,15,20-tetrakis(p-carboxyphenyl)porphyrin (Co-TPPC), thermally stable and water-soluble quadricyclane derivatives 1a-l isomerised to the corresponding norbornadiene derivatives 2a-l quantitatively and suddenly even at room temperature in an aqueous sodium carbonate solution.It was seen that larger hydrophobicities of 1 enhanced the isomerization rate.The attacking direction of cobalt porphyrins toward quadricyclanes might be to the five-membered ring, which was different from that suggested in the action of Rh catalyst, i.e., attack to the three-membered ring.
Development of a Solar Energy Storage Process. Photoisomerization of a Norbornadiene Derivative to a Quadricyclane Derivative in an Aqueous Alkaline Solution
Maruyama, Kazuhiro,Tamiaki, Hitoshi,Kawabata, Shigeki
, p. 4742 - 4749 (2007/10/02)
In an aqueous alkaline solution, the photoisomerization of norbornadiene derivatives 1 to quadricyclane derivatives 2 was investigated.Upon irradiation with sunlight, 1a-g isomerized quantitatively to 2a-g even in the presence of air, although the reactio
