Novel oxidative coupling of monophenols in the system of cupric chloride-oxygen-alcohol
Y Takizawa, T Munakata, Y Iwasa…
Index: Takizawa, Yasuomi; Munakata, Tsunemasa; Iwasa, Yoshihito; Suzuki, Toshiaki; Mitsuhashi, Tatsuo Journal of Organic Chemistry, 1985 , vol. 50, # 22 p. 4383 - 4386
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Citation Number: 18
Abstract
Conclusion It is shown with 31P NMR that the pseudorotation of the oxyphosphoranes 4 and 5 involves intermediate structures with a diequatorial orientation of the dioxaphospholene ring. Thus it appears that the pseudorotation of trigonal bipyramidal phosphoranes that are stabilized by a dioxaphospholene ring may very well involve intermediates which are in conflict with the well-known ringstrain rule.
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