512833-99-7Relevant academic research and scientific papers
Synthesis, structure, and photochemistry of 2,3,5,6-tetrasilyl-1,4-benzoquinones and related compounds
Tsutsui, Shinobu,Sakamoto, Kenkichi,Ebata, Keisuke,Kabuto, Chizuko,Sakurai, Hideki
, p. 2571 - 2577 (2007/10/03)
2,3,5,6-Tetrasilyl- and 2,3,5,6-tetragermyl-1,4-benzoquinones were obtained by oxidation of the corresponding 1,4-dimetaloxybenzene derivatives with pyridinium chlorochromate. X-ray crystallographic analysis revealed that the quinone ring of 2,3,5,6-tetrakis(trimethylsilyl)-1,4-benzoquinone (1a) was distorted into a chair form. The deformed quinone ring allowed a σ(Cquinone-Si)-π* electronic transition in 1a. Photolysis of 1a resulted in an isomerization, creating a ketene derivative, 4-carbonyl-2,3,5,5-tetrakis(trimethylsilyl)-2-cyclopenten-1-one.
