Synthesis, Structure, and Photochemistry of 2, 3, 5, 6-Tetrasilyl-1, 4-benzoquinones and Related Compounds.
…, K Sakamoto, K Ebata, C Kabuto, H Sakurai
Index: Tsutsui, Shinobu; Sakamoto, Kenkichi; Ebata, Keisuke; Kabuto, Chizuko; Sakurai, Hideki Bulletin of the Chemical Society of Japan, 2002 , vol. 75, # 12 p. 2571 - 2577
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Citation Number: 5
Abstract
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 (C quinone-Si)–π* electronic transition in 1a. Photolysis of 1a ...
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